./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.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_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/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_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/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_3b0bc219-62b8-44a3-a74c-27117c558179/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 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:33:47,673 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:33:47,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:33:47,744 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:33:47,745 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:33:47,751 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:33:47,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:33:47,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:33:47,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:33:47,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:33:47,769 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:33:47,771 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:33:47,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:33:47,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:33:47,777 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:33:47,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:33:47,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:33:47,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:33:47,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:33:47,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:33:47,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:33:47,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:33:47,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:33:47,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:33:47,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:33:47,821 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:33:47,821 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:33:47,824 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:33:47,825 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:33:47,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:33:47,827 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:33:47,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:33:47,831 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:33:47,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:33:47,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:33:47,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:33:47,836 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:33:47,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:33:47,837 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:33:47,838 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:33:47,839 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:33:47,840 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:33:47,891 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:33:47,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:33:47,892 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:33:47,893 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:33:47,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:33:47,903 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:33:47,903 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:33:47,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:33:47,904 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:33:47,904 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:33:47,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:33:47,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:33:47,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:33:47,907 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:33:47,907 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:33:47,907 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:33:47,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:33:47,908 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:33:47,908 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:33:47,908 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:33:47,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:33:47,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:33:47,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:33:47,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:33:47,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:33:47,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:33:47,910 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:33:47,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:33:47,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:33:47,911 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_3b0bc219-62b8-44a3-a74c-27117c558179/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 [2021-11-02 22:33:48,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:33:48,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:33:48,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:33:48,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:33:48,278 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:33:48,279 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2021-11-02 22:33:48,347 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/36d82fb4f/444afffd413744a18ce2c89d2cd11b68/FLAG9da722393 [2021-11-02 22:33:49,157 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:33:49,158 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2021-11-02 22:33:49,184 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/36d82fb4f/444afffd413744a18ce2c89d2cd11b68/FLAG9da722393 [2021-11-02 22:33:49,258 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/36d82fb4f/444afffd413744a18ce2c89d2cd11b68 [2021-11-02 22:33:49,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:33:49,262 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:33:49,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:33:49,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:33:49,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:33:49,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:33:49" (1/1) ... [2021-11-02 22:33:49,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26a9f02b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:49, skipping insertion in model container [2021-11-02 22:33:49,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:33:49" (1/1) ... [2021-11-02 22:33:49,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:33:49,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:33:49,973 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_3b0bc219-62b8-44a3-a74c-27117c558179/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i[33021,33034] [2021-11-02 22:33:50,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:33:50,138 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 22:33:50,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5eebf21c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:50, skipping insertion in model container [2021-11-02 22:33:50,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:33:50,140 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:33:50,142 INFO L168 Benchmark]: Toolchain (without parser) took 878.12 ms. Allocated memory is still 102.8 MB. Free memory was 59.8 MB in the beginning and 65.9 MB in the end (delta: -6.1 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:33:50,143 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 78.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:33:50,144 INFO L168 Benchmark]: CACSL2BoogieTranslator took 860.54 ms. Allocated memory is still 102.8 MB. Free memory was 59.6 MB in the beginning and 65.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-11-02 22:33:50,147 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 102.8 MB. Free memory is still 78.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 860.54 ms. Allocated memory is still 102.8 MB. Free memory was 59.6 MB in the beginning and 65.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/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_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/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_3b0bc219-62b8-44a3-a74c-27117c558179/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 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:33:52,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:33:52,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:33:53,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:33:53,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:33:53,025 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:33:53,027 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:33:53,036 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:33:53,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:33:53,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:33:53,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:33:53,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:33:53,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:33:53,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:33:53,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:33:53,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:33:53,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:33:53,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:33:53,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:33:53,085 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:33:53,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:33:53,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:33:53,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:33:53,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:33:53,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:33:53,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:33:53,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:33:53,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:33:53,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:33:53,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:33:53,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:33:53,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:33:53,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:33:53,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:33:53,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:33:53,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:33:53,123 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:33:53,123 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:33:53,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:33:53,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:33:53,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:33:53,128 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:33:53,189 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:33:53,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:33:53,190 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:33:53,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:33:53,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:33:53,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:33:53,195 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:33:53,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:33:53,196 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:33:53,196 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:33:53,198 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:33:53,198 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:33:53,198 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:33:53,199 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:33:53,199 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:33:53,199 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:33:53,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:33:53,200 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:33:53,200 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:33:53,200 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:33:53,200 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:33:53,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:33:53,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:33:53,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:33:53,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:33:53,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:33:53,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:33:53,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:33:53,203 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:33:53,203 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:33:53,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:33:53,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:33:53,204 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_3b0bc219-62b8-44a3-a74c-27117c558179/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 834766c90c3d5af368509ae691087999af545dba19d7eed6a5d75f823cbb2437 [2021-11-02 22:33:53,681 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:33:53,728 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:33:53,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:33:53,733 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:33:53,734 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:33:53,735 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2021-11-02 22:33:53,826 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/6be76a882/401c2db85d4e4d6b9f6a458710dc2c88/FLAGe3a805082 [2021-11-02 22:33:54,734 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:33:54,736 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i [2021-11-02 22:33:54,766 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/6be76a882/401c2db85d4e4d6b9f6a458710dc2c88/FLAGe3a805082 [2021-11-02 22:33:54,883 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/data/6be76a882/401c2db85d4e4d6b9f6a458710dc2c88 [2021-11-02 22:33:54,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:33:54,890 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:33:54,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:33:54,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:33:54,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:33:54,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:33:54" (1/1) ... [2021-11-02 22:33:54,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@351e2410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:54, skipping insertion in model container [2021-11-02 22:33:54,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:33:54" (1/1) ... [2021-11-02 22:33:54,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:33:54,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:33:55,467 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_3b0bc219-62b8-44a3-a74c-27117c558179/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i[33021,33034] [2021-11-02 22:33:55,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:33:55,795 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:33:55,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:33:55,852 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_3b0bc219-62b8-44a3-a74c-27117c558179/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i[33021,33034] [2021-11-02 22:33:55,968 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:33:55,991 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:33:56,052 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_3b0bc219-62b8-44a3-a74c-27117c558179/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test4-2.i[33021,33034] [2021-11-02 22:33:56,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:33:56,252 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:33:56,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56 WrapperNode [2021-11-02 22:33:56,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:33:56,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:33:56,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:33:56,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:33:56,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,553 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:33:56,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:33:56,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:33:56,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:33:56,599 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (1/1) ... [2021-11-02 22:33:56,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:33:56,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:33:56,635 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:33:56,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:33:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:33:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:33:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:33:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:33:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:33:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:33:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:33:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:33:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:33:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:33:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:33:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:33:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:33:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:33:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:33:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:33:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:33:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:33:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:33:56,710 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:33:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:33:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:33:56,711 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:33:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:33:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:33:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:33:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:33:56,712 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:33:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:33:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:33:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:33:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:33:56,713 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:33:56,714 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:33:56,714 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:33:56,714 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:33:56,714 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:33:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:33:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:33:56,716 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:33:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:33:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:33:56,717 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:33:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:33:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:33:56,718 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:33:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:33:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:33:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:33:56,719 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:33:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:33:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:33:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:33:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:33:56,720 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:33:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:33:56,721 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:33:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:33:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:33:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:33:56,724 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:33:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:33:56,725 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:33:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:33:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:33:56,726 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:33:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:33:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:33:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:33:56,727 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:33:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:33:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:33:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:33:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:33:56,728 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:33:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:33:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:33:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:33:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:33:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:33:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:33:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:33:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:33:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:33:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:33:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:33:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:33:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:33:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:33:56,732 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:33:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:33:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:33:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:33:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:33:56,733 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:33:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:33:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:33:56,734 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:33:56,735 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:33:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:33:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:33:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:33:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:33:56,736 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:33:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:33:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:33:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:33:56,737 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:33:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:33:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:33:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:33:56,738 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:33:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:33:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:33:56,739 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:33:56,740 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:33:56,741 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:33:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:33:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:33:56,745 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:33:56,747 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:33:56,748 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:33:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:33:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:33:56,749 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:33:56,751 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:33:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:33:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:33:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:33:56,755 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:33:56,756 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:33:56,757 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:33:56,758 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:33:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:33:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:33:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:33:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:33:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:33:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:33:56,759 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:33:56,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:33:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:33:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:33:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:33:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:33:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:33:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:33:56,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:33:56,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:33:56,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:33:56,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:33:56,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:33:56,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:33:57,484 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:34:04,694 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:34:04,696 INFO L299 CfgBuilder]: Removed 69 assume(true) statements. [2021-11-02 22:34:04,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:34:04 BoogieIcfgContainer [2021-11-02 22:34:04,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:34:04,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:34:04,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:34:04,707 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:34:04,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:33:54" (1/3) ... [2021-11-02 22:34:04,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c247ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:34:04, skipping insertion in model container [2021-11-02 22:34:04,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:33:56" (2/3) ... [2021-11-02 22:34:04,709 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c247ba4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:34:04, skipping insertion in model container [2021-11-02 22:34:04,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:34:04" (3/3) ... [2021-11-02 22:34:04,713 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test4-2.i [2021-11-02 22:34:04,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:34:04,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 753 error locations. [2021-11-02 22:34:04,781 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:34:04,791 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 22:34:04,791 INFO L340 AbstractCegarLoop]: Starting to check reachability of 753 error locations. [2021-11-02 22:34:04,858 INFO L276 IsEmpty]: Start isEmpty. Operand has 1481 states, 709 states have (on average 2.2637517630465442) internal successors, (1605), 1466 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-02 22:34:04,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:34:04,872 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:04,873 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:04,874 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:04,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:04,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376258, now seen corresponding path program 1 times [2021-11-02 22:34:04,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:04,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112316246] [2021-11-02 22:34:04,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:04,895 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:04,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:04,902 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:04,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:34:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:05,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-02 22:34:05,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:05,344 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 22:34:05,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:05,399 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:05,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [112316246] [2021-11-02 22:34:05,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [112316246] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:05,400 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:05,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:34:05,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503527718] [2021-11-02 22:34:05,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 22:34:05,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:05,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 22:34:05,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 22:34:05,442 INFO L87 Difference]: Start difference. First operand has 1481 states, 709 states have (on average 2.2637517630465442) internal successors, (1605), 1466 states have internal predecessors, (1605), 19 states have call successors, (19), 5 states have call predecessors, (19), 5 states have return successors, (19), 10 states have call predecessors, (19), 19 states have call successors, (19) 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 22:34:05,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:05,521 INFO L93 Difference]: Finished difference Result 1463 states and 1548 transitions. [2021-11-02 22:34:05,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 22:34:05,522 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 22:34:05,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:05,553 INFO L225 Difference]: With dead ends: 1463 [2021-11-02 22:34:05,554 INFO L226 Difference]: Without dead ends: 1460 [2021-11-02 22:34:05,555 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 22:34:05,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-02 22:34:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1460. [2021-11-02 22:34:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1460 states, 700 states have (on average 2.1542857142857144) internal successors, (1508), 1446 states have internal predecessors, (1508), 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 22:34:05,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 1545 transitions. [2021-11-02 22:34:05,692 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 1545 transitions. Word has length 9 [2021-11-02 22:34:05,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:05,695 INFO L470 AbstractCegarLoop]: Abstraction has 1460 states and 1545 transitions. [2021-11-02 22:34:05,696 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 22:34:05,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 1545 transitions. [2021-11-02 22:34:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:34:05,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:05,700 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:05,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:05,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:05,901 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:05,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:05,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376196, now seen corresponding path program 1 times [2021-11-02 22:34:05,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:05,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239055092] [2021-11-02 22:34:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:05,904 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:05,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:05,910 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:05,962 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:34:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:06,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:34:06,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:06,229 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 22:34:06,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:06,254 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:06,307 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 22:34:06,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:06,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239055092] [2021-11-02 22:34:06,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239055092] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:06,309 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:06,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:34:06,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527465209] [2021-11-02 22:34:06,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:06,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:06,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:06,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:06,315 INFO L87 Difference]: Start difference. First operand 1460 states and 1545 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 22:34:09,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:09,716 INFO L93 Difference]: Finished difference Result 1497 states and 1595 transitions. [2021-11-02 22:34:09,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:09,717 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 22:34:09,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:09,728 INFO L225 Difference]: With dead ends: 1497 [2021-11-02 22:34:09,728 INFO L226 Difference]: Without dead ends: 1497 [2021-11-02 22:34:09,729 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 22:34:09,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2021-11-02 22:34:09,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1443. [2021-11-02 22:34:09,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 776 states have (on average 1.9974226804123711) internal successors, (1550), 1429 states have internal predecessors, (1550), 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 22:34:09,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 1587 transitions. [2021-11-02 22:34:09,784 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 1587 transitions. Word has length 9 [2021-11-02 22:34:09,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:09,785 INFO L470 AbstractCegarLoop]: Abstraction has 1443 states and 1587 transitions. [2021-11-02 22:34:09,785 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 22:34:09,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 1587 transitions. [2021-11-02 22:34:09,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-02 22:34:09,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:09,786 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:09,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:10,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:10,000 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1877376195, now seen corresponding path program 1 times [2021-11-02 22:34:10,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:10,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667986929] [2021-11-02 22:34:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:10,002 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:10,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:10,004 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:10,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:34:10,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:10,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:34:10,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:10,323 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 22:34:10,353 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 22:34:10,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:10,451 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 22:34:10,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:10,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667986929] [2021-11-02 22:34:10,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667986929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:10,453 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:10,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:34:10,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876598283] [2021-11-02 22:34:10,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:34:10,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:10,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:34:10,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:34:10,456 INFO L87 Difference]: Start difference. First operand 1443 states and 1587 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 22:34:18,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:18,002 INFO L93 Difference]: Finished difference Result 1797 states and 1962 transitions. [2021-11-02 22:34:18,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:34:18,003 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 22:34:18,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:18,015 INFO L225 Difference]: With dead ends: 1797 [2021-11-02 22:34:18,016 INFO L226 Difference]: Without dead ends: 1797 [2021-11-02 22:34:18,016 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 22:34:18,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2021-11-02 22:34:18,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1599. [2021-11-02 22:34:18,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 942 states have (on average 1.970276008492569) internal successors, (1856), 1585 states have internal predecessors, (1856), 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 22:34:18,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1893 transitions. [2021-11-02 22:34:18,095 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1893 transitions. Word has length 9 [2021-11-02 22:34:18,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:18,095 INFO L470 AbstractCegarLoop]: Abstraction has 1599 states and 1893 transitions. [2021-11-02 22:34:18,095 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 22:34:18,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1893 transitions. [2021-11-02 22:34:18,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 22:34:18,096 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:18,097 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:18,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:18,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:18,311 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr640REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1932567471, now seen corresponding path program 1 times [2021-11-02 22:34:18,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:18,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1365483531] [2021-11-02 22:34:18,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:18,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:18,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:18,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:18,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:34:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:18,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:34:18,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:18,639 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 22:34:18,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:18,684 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 22:34:18,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:18,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1365483531] [2021-11-02 22:34:18,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1365483531] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:18,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:18,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:34:18,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913871861] [2021-11-02 22:34:18,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:34:18,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:34:18,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:34:18,690 INFO L87 Difference]: Start difference. First operand 1599 states and 1893 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 22:34:18,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:18,877 INFO L93 Difference]: Finished difference Result 2944 states and 3501 transitions. [2021-11-02 22:34:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:34:18,879 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 22:34:18,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:18,900 INFO L225 Difference]: With dead ends: 2944 [2021-11-02 22:34:18,900 INFO L226 Difference]: Without dead ends: 2944 [2021-11-02 22:34:18,901 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 22:34:18,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2021-11-02 22:34:18,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2415. [2021-11-02 22:34:18,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 1758 states have (on average 1.963594994311718) internal successors, (3452), 2395 states have internal predecessors, (3452), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:34:19,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3501 transitions. [2021-11-02 22:34:19,011 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3501 transitions. Word has length 10 [2021-11-02 22:34:19,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:19,011 INFO L470 AbstractCegarLoop]: Abstraction has 2415 states and 3501 transitions. [2021-11-02 22:34:19,012 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 22:34:19,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3501 transitions. [2021-11-02 22:34:19,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:34:19,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:19,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:34:19,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:19,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:19,232 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:19,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:19,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1315601158, now seen corresponding path program 1 times [2021-11-02 22:34:19,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:19,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202384001] [2021-11-02 22:34:19,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:19,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:19,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:19,235 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:19,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:34:19,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:19,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:34:19,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:19,653 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 22:34:19,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:19,729 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 22:34:19,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:19,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202384001] [2021-11-02 22:34:19,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202384001] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:19,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:19,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:34:19,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060634403] [2021-11-02 22:34:19,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:34:19,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:34:19,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:34:19,736 INFO L87 Difference]: Start difference. First operand 2415 states and 3501 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 22:34:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:19,799 INFO L93 Difference]: Finished difference Result 2355 states and 3415 transitions. [2021-11-02 22:34:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:19,800 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 22:34:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:19,823 INFO L225 Difference]: With dead ends: 2355 [2021-11-02 22:34:19,823 INFO L226 Difference]: Without dead ends: 2355 [2021-11-02 22:34:19,824 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 22:34:19,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2355 states. [2021-11-02 22:34:19,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2355 to 2355. [2021-11-02 22:34:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2355 states, 1722 states have (on average 1.9547038327526132) internal successors, (3366), 2335 states have internal predecessors, (3366), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:34:19,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2355 states to 2355 states and 3415 transitions. [2021-11-02 22:34:19,914 INFO L78 Accepts]: Start accepts. Automaton has 2355 states and 3415 transitions. Word has length 15 [2021-11-02 22:34:19,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:19,915 INFO L470 AbstractCegarLoop]: Abstraction has 2355 states and 3415 transitions. [2021-11-02 22:34:19,915 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 22:34:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 2355 states and 3415 transitions. [2021-11-02 22:34:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:34:19,917 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:19,917 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 22:34:19,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:20,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:20,135 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:20,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1572327136, now seen corresponding path program 1 times [2021-11-02 22:34:20,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:20,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591577865] [2021-11-02 22:34:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:20,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:20,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:20,140 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:20,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:34:20,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:20,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:34:20,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:20,509 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 22:34:20,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:20,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:20,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:20,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591577865] [2021-11-02 22:34:20,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591577865] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:20,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:20,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:34:20,588 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502811480] [2021-11-02 22:34:20,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:34:20,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:20,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:34:20,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:34:20,590 INFO L87 Difference]: Start difference. First operand 2355 states and 3415 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 22:34:20,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:20,711 INFO L93 Difference]: Finished difference Result 2327 states and 3359 transitions. [2021-11-02 22:34:20,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:34:20,712 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 22:34:20,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:20,730 INFO L225 Difference]: With dead ends: 2327 [2021-11-02 22:34:20,731 INFO L226 Difference]: Without dead ends: 2327 [2021-11-02 22:34:20,731 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 22:34:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2327 states. [2021-11-02 22:34:20,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2327 to 2325. [2021-11-02 22:34:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2325 states, 1706 states have (on average 1.9390386869871044) internal successors, (3308), 2305 states have internal predecessors, (3308), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:34:20,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2325 states to 2325 states and 3357 transitions. [2021-11-02 22:34:20,811 INFO L78 Accepts]: Start accepts. Automaton has 2325 states and 3357 transitions. Word has length 17 [2021-11-02 22:34:20,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:20,811 INFO L470 AbstractCegarLoop]: Abstraction has 2325 states and 3357 transitions. [2021-11-02 22:34:20,812 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 22:34:20,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2325 states and 3357 transitions. [2021-11-02 22:34:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:34:20,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:20,814 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 22:34:20,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:21,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:21,029 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:21,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:21,030 INFO L85 PathProgramCache]: Analyzing trace with hash 928479182, now seen corresponding path program 1 times [2021-11-02 22:34:21,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:21,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [605401368] [2021-11-02 22:34:21,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:21,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:21,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:21,033 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:21,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:34:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:21,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:34:21,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:21,390 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 22:34:21,534 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 22:34:21,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:21,716 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 22:34:21,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:21,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [605401368] [2021-11-02 22:34:21,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [605401368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:21,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:21,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:34:21,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134491455] [2021-11-02 22:34:21,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:34:21,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:21,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:34:21,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:34:21,720 INFO L87 Difference]: Start difference. First operand 2325 states and 3357 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 22:34:26,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:26,715 INFO L93 Difference]: Finished difference Result 3136 states and 4343 transitions. [2021-11-02 22:34:26,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:34:26,716 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 22:34:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:26,741 INFO L225 Difference]: With dead ends: 3136 [2021-11-02 22:34:26,741 INFO L226 Difference]: Without dead ends: 3136 [2021-11-02 22:34:26,742 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 22:34:26,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3136 states. [2021-11-02 22:34:26,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3136 to 2321. [2021-11-02 22:34:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 1706 states have (on average 1.9343493552168816) internal successors, (3300), 2301 states have internal predecessors, (3300), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:34:26,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3349 transitions. [2021-11-02 22:34:26,840 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3349 transitions. Word has length 31 [2021-11-02 22:34:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:26,840 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 3349 transitions. [2021-11-02 22:34:26,841 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 22:34:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3349 transitions. [2021-11-02 22:34:26,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-02 22:34:26,842 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:26,843 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 22:34:26,867 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:27,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:27,064 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:27,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:27,064 INFO L85 PathProgramCache]: Analyzing trace with hash 928479183, now seen corresponding path program 1 times [2021-11-02 22:34:27,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:27,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [348700962] [2021-11-02 22:34:27,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:27,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:27,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:27,074 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:27,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:34:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:27,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:34:27,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:27,423 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 22:34:27,808 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 22:34:27,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:28,416 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 22:34:28,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:28,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [348700962] [2021-11-02 22:34:28,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [348700962] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:28,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:28,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:34:28,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30606972] [2021-11-02 22:34:28,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:34:28,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:28,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:34:28,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:34:28,419 INFO L87 Difference]: Start difference. First operand 2321 states and 3349 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 22:34:41,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:41,850 INFO L93 Difference]: Finished difference Result 2773 states and 3708 transitions. [2021-11-02 22:34:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-02 22:34:41,852 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 22:34:41,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:41,870 INFO L225 Difference]: With dead ends: 2773 [2021-11-02 22:34:41,871 INFO L226 Difference]: Without dead ends: 2773 [2021-11-02 22:34:41,871 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 22:34:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2773 states. [2021-11-02 22:34:41,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2773 to 2317. [2021-11-02 22:34:41,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1706 states have (on average 1.9296600234466588) internal successors, (3292), 2297 states have internal predecessors, (3292), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:34:41,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3341 transitions. [2021-11-02 22:34:41,942 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3341 transitions. Word has length 31 [2021-11-02 22:34:41,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:41,943 INFO L470 AbstractCegarLoop]: Abstraction has 2317 states and 3341 transitions. [2021-11-02 22:34:41,943 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 22:34:41,943 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3341 transitions. [2021-11-02 22:34:41,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 22:34:41,945 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:41,945 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 22:34:41,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-11-02 22:34:42,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:42,159 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:42,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:42,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1635573428, now seen corresponding path program 1 times [2021-11-02 22:34:42,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:42,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [933342328] [2021-11-02 22:34:42,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:42,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:42,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:42,161 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:42,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:34:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:42,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:34:42,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:42,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:42,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:34:42,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:42,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [933342328] [2021-11-02 22:34:42,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [933342328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:42,807 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:42,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:34:42,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662997190] [2021-11-02 22:34:42,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:34:42,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:42,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:34:42,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:34:42,810 INFO L87 Difference]: Start difference. First operand 2317 states and 3341 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 22:34:42,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:42,898 INFO L93 Difference]: Finished difference Result 2305 states and 3321 transitions. [2021-11-02 22:34:42,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:34:42,898 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 22:34:42,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:42,918 INFO L225 Difference]: With dead ends: 2305 [2021-11-02 22:34:42,918 INFO L226 Difference]: Without dead ends: 2305 [2021-11-02 22:34:42,919 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 22:34:42,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2021-11-02 22:34:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 2305. [2021-11-02 22:34:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 1694 states have (on average 1.9315230224321134) internal successors, (3272), 2285 states have internal predecessors, (3272), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:34:43,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3321 transitions. [2021-11-02 22:34:43,005 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3321 transitions. Word has length 46 [2021-11-02 22:34:43,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:43,005 INFO L470 AbstractCegarLoop]: Abstraction has 2305 states and 3321 transitions. [2021-11-02 22:34:43,006 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 22:34:43,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3321 transitions. [2021-11-02 22:34:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-02 22:34:43,015 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:43,016 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 22:34:43,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:43,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:43,229 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:43,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:43,230 INFO L85 PathProgramCache]: Analyzing trace with hash -2024025624, now seen corresponding path program 1 times [2021-11-02 22:34:43,230 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:43,231 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1386181787] [2021-11-02 22:34:43,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:43,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:43,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:43,232 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:43,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:34:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:43,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:34:43,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:44,166 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 22:34:44,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:44,660 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 22:34:44,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:44,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1386181787] [2021-11-02 22:34:44,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1386181787] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:44,661 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:44,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:34:44,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837850181] [2021-11-02 22:34:44,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:34:44,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:44,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:34:44,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:34:44,663 INFO L87 Difference]: Start difference. First operand 2305 states and 3321 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 22:34:44,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:34:44,911 INFO L93 Difference]: Finished difference Result 2316 states and 3170 transitions. [2021-11-02 22:34:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:34:44,912 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 22:34:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:34:44,926 INFO L225 Difference]: With dead ends: 2316 [2021-11-02 22:34:44,926 INFO L226 Difference]: Without dead ends: 2316 [2021-11-02 22:34:44,926 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 22:34:44,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2021-11-02 22:34:44,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2121. [2021-11-02 22:34:44,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2121 states, 1510 states have (on average 1.9317880794701987) internal successors, (2917), 2101 states have internal predecessors, (2917), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 15 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-02 22:34:44,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2121 states to 2121 states and 2966 transitions. [2021-11-02 22:34:44,987 INFO L78 Accepts]: Start accepts. Automaton has 2121 states and 2966 transitions. Word has length 54 [2021-11-02 22:34:44,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:34:44,988 INFO L470 AbstractCegarLoop]: Abstraction has 2121 states and 2966 transitions. [2021-11-02 22:34:44,988 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 22:34:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 2121 states and 2966 transitions. [2021-11-02 22:34:44,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-02 22:34:44,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:34:44,990 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 22:34:45,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:34:45,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:34:45,205 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:34:45,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:34:45,205 INFO L85 PathProgramCache]: Analyzing trace with hash -808871559, now seen corresponding path program 1 times [2021-11-02 22:34:45,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:34:45,206 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775404467] [2021-11-02 22:34:45,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:34:45,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:34:45,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:34:45,208 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:34:45,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:34:45,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:34:45,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-02 22:34:45,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:34:45,837 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 22:34:45,854 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 22:34:46,670 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:34:46,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-02 22:34:46,677 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:34:46,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-02 22:34:46,731 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 22:34:46,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:34:52,771 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 22:34:52,772 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:34:52,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775404467] [2021-11-02 22:34:52,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775404467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:34:52,773 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:34:52,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:34:52,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299744384] [2021-11-02 22:34:52,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:34:52,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:34:52,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:34:52,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-02 22:34:52,775 INFO L87 Difference]: Start difference. First operand 2121 states and 2966 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 22:35:14,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:14,793 INFO L93 Difference]: Finished difference Result 2769 states and 3746 transitions. [2021-11-02 22:35:14,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:35:14,794 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 22:35:14,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:14,812 INFO L225 Difference]: With dead ends: 2769 [2021-11-02 22:35:14,813 INFO L226 Difference]: Without dead ends: 2769 [2021-11-02 22:35:14,813 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-02 22:35:14,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2021-11-02 22:35:14,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2261. [2021-11-02 22:35:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1688 states have (on average 1.879739336492891) internal successors, (3173), 2235 states have internal predecessors, (3173), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 22:35:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3234 transitions. [2021-11-02 22:35:14,883 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3234 transitions. Word has length 57 [2021-11-02 22:35:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:14,884 INFO L470 AbstractCegarLoop]: Abstraction has 2261 states and 3234 transitions. [2021-11-02 22:35:14,884 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 22:35:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3234 transitions. [2021-11-02 22:35:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:35:14,885 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:14,885 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 22:35:14,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:15,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:35:15,099 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:35:15,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:15,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1667441605, now seen corresponding path program 1 times [2021-11-02 22:35:15,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:35:15,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1230270607] [2021-11-02 22:35:15,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:15,101 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:35:15,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:35:15,102 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:35:15,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:35:15,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:15,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:35:15,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:15,886 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 22:35:15,906 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 22:35:15,976 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 22:35:15,995 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 22:35:15,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:35:16,162 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 22:35:16,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:35:16,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1230270607] [2021-11-02 22:35:16,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1230270607] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:16,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:16,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:35:16,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321392353] [2021-11-02 22:35:16,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:35:16,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:35:16,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:35:16,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:35:16,165 INFO L87 Difference]: Start difference. First operand 2261 states and 3234 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 22:35:21,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:21,415 INFO L93 Difference]: Finished difference Result 2260 states and 3232 transitions. [2021-11-02 22:35:21,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:35:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-02 22:35:21,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:21,427 INFO L225 Difference]: With dead ends: 2260 [2021-11-02 22:35:21,427 INFO L226 Difference]: Without dead ends: 2260 [2021-11-02 22:35:21,427 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 22:35:21,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2021-11-02 22:35:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 2260. [2021-11-02 22:35:21,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2260 states, 1688 states have (on average 1.8785545023696681) internal successors, (3171), 2234 states have internal predecessors, (3171), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 22:35:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2260 states to 2260 states and 3232 transitions. [2021-11-02 22:35:21,481 INFO L78 Accepts]: Start accepts. Automaton has 2260 states and 3232 transitions. Word has length 62 [2021-11-02 22:35:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:21,482 INFO L470 AbstractCegarLoop]: Abstraction has 2260 states and 3232 transitions. [2021-11-02 22:35:21,482 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 22:35:21,482 INFO L276 IsEmpty]: Start isEmpty. Operand 2260 states and 3232 transitions. [2021-11-02 22:35:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 22:35:21,483 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:21,483 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 22:35:21,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:21,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:35:21,700 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:35:21,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1667441604, now seen corresponding path program 1 times [2021-11-02 22:35:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:35:21,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673936730] [2021-11-02 22:35:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:21,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:35:21,702 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:35:21,703 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:35:21,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:35:22,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:22,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:35:22,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:22,553 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 22:35:22,592 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 13 treesize of output 9 [2021-11-02 22:35:22,605 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 22:35:22,691 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 22:35:22,696 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 22:35:22,730 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 22:35:22,730 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:35:23,118 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 22:35:23,119 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:35:23,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673936730] [2021-11-02 22:35:23,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673936730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:23,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:23,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:35:23,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019500553] [2021-11-02 22:35:23,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:35:23,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:35:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:35:23,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:35:23,121 INFO L87 Difference]: Start difference. First operand 2260 states and 3232 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 22:35:38,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:38,758 INFO L93 Difference]: Finished difference Result 2259 states and 3230 transitions. [2021-11-02 22:35:38,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:35:38,759 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 22:35:38,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:38,766 INFO L225 Difference]: With dead ends: 2259 [2021-11-02 22:35:38,766 INFO L226 Difference]: Without dead ends: 2259 [2021-11-02 22:35:38,767 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 22:35:38,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2021-11-02 22:35:38,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2259. [2021-11-02 22:35:38,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 1686 states have (on average 1.879596678529063) internal successors, (3169), 2233 states have internal predecessors, (3169), 31 states have call successors, (31), 5 states have call predecessors, (31), 4 states have return successors, (30), 21 states have call predecessors, (30), 30 states have call successors, (30) [2021-11-02 22:35:38,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3230 transitions. [2021-11-02 22:35:38,840 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3230 transitions. Word has length 62 [2021-11-02 22:35:38,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:38,841 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 3230 transitions. [2021-11-02 22:35:38,842 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 22:35:38,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3230 transitions. [2021-11-02 22:35:38,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-02 22:35:38,843 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:38,843 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 22:35:38,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:39,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:35:39,066 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:35:39,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:39,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2058509150, now seen corresponding path program 1 times [2021-11-02 22:35:39,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:35:39,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312991203] [2021-11-02 22:35:39,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:39,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:35:39,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:35:39,068 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:35:39,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:35:39,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:39,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:35:39,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:39,858 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 22:35:39,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:35:40,082 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 22:35:40,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:35:40,082 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312991203] [2021-11-02 22:35:40,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312991203] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:35:40,083 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:35:40,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:35:40,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810127891] [2021-11-02 22:35:40,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:35:40,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:35:40,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:35:40,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:35:40,085 INFO L87 Difference]: Start difference. First operand 2259 states and 3230 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 22:35:40,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:40,286 INFO L93 Difference]: Finished difference Result 2269 states and 3248 transitions. [2021-11-02 22:35:40,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:35:40,287 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 22:35:40,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:40,297 INFO L225 Difference]: With dead ends: 2269 [2021-11-02 22:35:40,297 INFO L226 Difference]: Without dead ends: 2269 [2021-11-02 22:35:40,298 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 22:35:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2021-11-02 22:35:40,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2269. [2021-11-02 22:35:40,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2269 states, 1694 states have (on average 1.8778040141676506) internal successors, (3181), 2242 states have internal predecessors, (3181), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:35:40,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2269 states to 2269 states and 3248 transitions. [2021-11-02 22:35:40,356 INFO L78 Accepts]: Start accepts. Automaton has 2269 states and 3248 transitions. Word has length 70 [2021-11-02 22:35:40,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:40,357 INFO L470 AbstractCegarLoop]: Abstraction has 2269 states and 3248 transitions. [2021-11-02 22:35:40,357 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 22:35:40,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2269 states and 3248 transitions. [2021-11-02 22:35:40,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-02 22:35:40,359 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:40,359 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 22:35:40,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:40,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:35:40,578 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:35:40,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:40,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1077389214, now seen corresponding path program 1 times [2021-11-02 22:35:40,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:35:40,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982950270] [2021-11-02 22:35:40,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:35:40,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:35:40,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:35:40,581 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:35:40,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:35:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:35:41,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:35:41,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:41,521 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 22:35:41,521 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:35:41,841 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 22:35:41,841 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:35:41,841 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982950270] [2021-11-02 22:35:41,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982950270] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:35:41,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:41,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:35:41,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360450812] [2021-11-02 22:35:41,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:35:41,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:35:41,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:35:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:35:41,844 INFO L87 Difference]: Start difference. First operand 2269 states and 3248 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 22:35:42,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:42,546 INFO L93 Difference]: Finished difference Result 2283 states and 3276 transitions. [2021-11-02 22:35:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:35:42,547 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 22:35:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:42,556 INFO L225 Difference]: With dead ends: 2283 [2021-11-02 22:35:42,556 INFO L226 Difference]: Without dead ends: 2279 [2021-11-02 22:35:42,557 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 22:35:42,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2021-11-02 22:35:42,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2275. [2021-11-02 22:35:42,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1700 states have (on average 1.8758823529411766) internal successors, (3189), 2248 states have internal predecessors, (3189), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:35:42,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3256 transitions. [2021-11-02 22:35:42,639 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3256 transitions. Word has length 72 [2021-11-02 22:35:42,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:42,640 INFO L470 AbstractCegarLoop]: Abstraction has 2275 states and 3256 transitions. [2021-11-02 22:35:42,640 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 22:35:42,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3256 transitions. [2021-11-02 22:35:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-02 22:35:42,642 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:42,642 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 22:35:42,665 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:42,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:35:42,861 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:35:42,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:42,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1730154526, now seen corresponding path program 2 times [2021-11-02 22:35:42,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:35:42,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [917295837] [2021-11-02 22:35:42,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:35:42,864 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:35:42,864 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:35:42,865 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:35:42,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:35:43,928 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:35:43,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:43,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:35:43,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:44,272 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 22:35:44,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:35:44,973 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 22:35:44,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:35:44,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [917295837] [2021-11-02 22:35:44,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [917295837] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:35:44,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:44,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:35:44,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41834853] [2021-11-02 22:35:44,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:35:44,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:35:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:35:44,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:35:44,975 INFO L87 Difference]: Start difference. First operand 2275 states and 3256 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 22:35:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:35:47,082 INFO L93 Difference]: Finished difference Result 2303 states and 3324 transitions. [2021-11-02 22:35:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:35:47,083 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 22:35:47,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:35:47,090 INFO L225 Difference]: With dead ends: 2303 [2021-11-02 22:35:47,091 INFO L226 Difference]: Without dead ends: 2299 [2021-11-02 22:35:47,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:35:47,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2021-11-02 22:35:47,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2287. [2021-11-02 22:35:47,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1712 states have (on average 1.8720794392523366) internal successors, (3205), 2260 states have internal predecessors, (3205), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:35:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3272 transitions. [2021-11-02 22:35:47,146 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3272 transitions. Word has length 76 [2021-11-02 22:35:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:35:47,146 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 3272 transitions. [2021-11-02 22:35:47,147 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 22:35:47,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3272 transitions. [2021-11-02 22:35:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 22:35:47,148 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:35:47,148 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 22:35:47,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:35:47,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:35:47,369 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:35:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:35:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1222123806, now seen corresponding path program 3 times [2021-11-02 22:35:47,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:35:47,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [158285801] [2021-11-02 22:35:47,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:35:47,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:35:47,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:35:47,371 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:35:47,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:35:48,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:35:48,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:35:48,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:35:48,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:35:49,357 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 22:35:49,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:35:51,352 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 22:35:51,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:35:51,353 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [158285801] [2021-11-02 22:35:51,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [158285801] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:35:51,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:35:51,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:35:51,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98628794] [2021-11-02 22:35:51,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:35:51,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:35:51,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:35:51,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:35:51,356 INFO L87 Difference]: Start difference. First operand 2287 states and 3272 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 22:36:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:01,526 INFO L93 Difference]: Finished difference Result 2343 states and 3420 transitions. [2021-11-02 22:36:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:36:01,528 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 22:36:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:01,535 INFO L225 Difference]: With dead ends: 2343 [2021-11-02 22:36:01,535 INFO L226 Difference]: Without dead ends: 2339 [2021-11-02 22:36:01,538 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 596 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:36:01,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2339 states. [2021-11-02 22:36:01,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2339 to 2311. [2021-11-02 22:36:01,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2311 states, 1736 states have (on average 1.86463133640553) internal successors, (3237), 2284 states have internal predecessors, (3237), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:36:01,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2311 states to 2311 states and 3304 transitions. [2021-11-02 22:36:01,592 INFO L78 Accepts]: Start accepts. Automaton has 2311 states and 3304 transitions. Word has length 84 [2021-11-02 22:36:01,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:01,593 INFO L470 AbstractCegarLoop]: Abstraction has 2311 states and 3304 transitions. [2021-11-02 22:36:01,593 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 22:36:01,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2311 states and 3304 transitions. [2021-11-02 22:36:01,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-02 22:36:01,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:01,595 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 22:36:01,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:01,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:36:01,811 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:36:01,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash -929383198, now seen corresponding path program 4 times [2021-11-02 22:36:01,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:36:01,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [379618359] [2021-11-02 22:36:01,813 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:36:01,813 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:36:01,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:36:01,815 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:36:01,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:36:02,782 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:36:02,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:36:02,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:36:02,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:04,429 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 22:36:04,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:36:10,177 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 22:36:10,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:36:10,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [379618359] [2021-11-02 22:36:10,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [379618359] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:36:10,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:36:10,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:36:10,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341044885] [2021-11-02 22:36:10,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:36:10,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:36:10,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:36:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:36:10,182 INFO L87 Difference]: Start difference. First operand 2311 states and 3304 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 22:36:32,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:36:32,634 INFO L93 Difference]: Finished difference Result 2405 states and 3576 transitions. [2021-11-02 22:36:32,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:36:32,636 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 22:36:32,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:36:32,643 INFO L225 Difference]: With dead ends: 2405 [2021-11-02 22:36:32,643 INFO L226 Difference]: Without dead ends: 2401 [2021-11-02 22:36:32,651 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 273 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2373 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:36:32,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2401 states. [2021-11-02 22:36:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2401 to 2341. [2021-11-02 22:36:32,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 1766 states have (on average 1.8590033975084939) internal successors, (3283), 2314 states have internal predecessors, (3283), 31 states have call successors, (31), 6 states have call predecessors, (31), 6 states have return successors, (36), 21 states have call predecessors, (36), 30 states have call successors, (36) [2021-11-02 22:36:32,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 3350 transitions. [2021-11-02 22:36:32,716 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 3350 transitions. Word has length 100 [2021-11-02 22:36:32,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:36:32,716 INFO L470 AbstractCegarLoop]: Abstraction has 2341 states and 3350 transitions. [2021-11-02 22:36:32,717 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 22:36:32,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 3350 transitions. [2021-11-02 22:36:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-02 22:36:32,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:36:32,718 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 22:36:32,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:36:32,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:36:32,939 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 749 more)] === [2021-11-02 22:36:32,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:36:32,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1199208670, now seen corresponding path program 5 times [2021-11-02 22:36:32,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:36:32,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [441007725] [2021-11-02 22:36:32,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:36:32,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:36:32,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:36:32,948 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:36:32,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b0bc219-62b8-44a3-a74c-27117c558179/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:36:35,061 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:36:35,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:36:35,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:36:35,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:36:35,120 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 22:36:35,418 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:36:35,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-02 22:36:35,486 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 22:36:35,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 30