./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:28:48,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:28:48,550 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:28:48,578 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:28:48,579 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:28:48,581 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:28:48,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:28:48,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:28:48,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:28:48,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:28:48,590 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:28:48,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:28:48,592 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:28:48,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:28:48,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:28:48,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:28:48,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:28:48,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:28:48,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:28:48,603 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:28:48,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:28:48,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:28:48,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:28:48,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:28:48,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:28:48,621 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:28:48,622 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:28:48,624 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:28:48,625 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:28:48,626 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:28:48,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:28:48,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:28:48,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:28:48,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:28:48,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:28:48,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:28:48,633 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:28:48,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:28:48,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:28:48,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:28:48,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:28:48,638 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-02 22:28:48,682 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:28:48,685 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:28:48,685 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:28:48,686 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:28:48,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:28:48,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:28:48,694 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:28:48,694 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:28:48,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:28:48,694 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:28:48,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:28:48,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:28:48,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:28:48,696 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:28:48,696 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:28:48,696 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:28:48,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:28:48,697 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:28:48,697 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:28:48,697 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:28:48,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:28:48,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:28:48,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:28:48,698 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:28:48,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:28:48,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:28:48,699 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 22:28:48,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 22:28:48,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:28:48,701 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-11-02 22:28:48,939 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:28:48,963 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:28:48,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:28:48,969 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:28:48,971 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:28:48,972 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-02 22:28:49,047 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/e5db90f53/392df02a650b4251a6569eba52535b56/FLAG9e2ae934a [2021-11-02 22:28:49,745 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:28:49,746 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-02 22:28:49,768 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/e5db90f53/392df02a650b4251a6569eba52535b56/FLAG9e2ae934a [2021-11-02 22:28:49,861 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/e5db90f53/392df02a650b4251a6569eba52535b56 [2021-11-02 22:28:49,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:28:49,865 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:28:49,867 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:28:49,867 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:28:49,872 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:28:49,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:28:49" (1/1) ... [2021-11-02 22:28:49,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2644167c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:49, skipping insertion in model container [2021-11-02 22:28:49,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:28:49" (1/1) ... [2021-11-02 22:28:49,886 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:28:49,978 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:28:50,475 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-02 22:28:50,763 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-02 22:28:50,774 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:28:50,783 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 22:28:50,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@29b0b78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:50, skipping insertion in model container [2021-11-02 22:28:50,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:28:50,784 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-02 22:28:50,786 INFO L168 Benchmark]: Toolchain (without parser) took 920.34 ms. Allocated memory is still 117.4 MB. Free memory was 80.5 MB in the beginning and 71.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:28:50,787 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 86.0 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-02 22:28:50,788 INFO L168 Benchmark]: CACSL2BoogieTranslator took 917.79 ms. Allocated memory is still 117.4 MB. Free memory was 80.3 MB in the beginning and 71.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-02 22:28:50,789 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 86.0 MB. Free memory is still 42.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 917.79 ms. Allocated memory is still 117.4 MB. Free memory was 80.3 MB in the beginning and 71.5 MB in the end (delta: 8.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-02 22:28:52,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 22:28:52,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 22:28:53,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 22:28:53,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 22:28:53,024 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 22:28:53,026 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 22:28:53,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 22:28:53,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 22:28:53,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 22:28:53,043 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 22:28:53,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 22:28:53,045 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 22:28:53,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 22:28:53,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 22:28:53,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 22:28:53,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 22:28:53,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 22:28:53,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 22:28:53,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 22:28:53,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 22:28:53,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 22:28:53,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 22:28:53,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 22:28:53,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 22:28:53,088 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 22:28:53,089 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 22:28:53,091 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 22:28:53,091 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 22:28:53,092 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 22:28:53,093 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 22:28:53,094 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 22:28:53,096 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 22:28:53,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 22:28:53,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 22:28:53,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 22:28:53,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 22:28:53,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 22:28:53,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 22:28:53,102 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 22:28:53,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 22:28:53,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-02 22:28:53,152 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 22:28:53,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 22:28:53,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 22:28:53,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 22:28:53,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 22:28:53,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 22:28:53,155 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 22:28:53,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 22:28:53,156 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-02 22:28:53,156 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-02 22:28:53,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 22:28:53,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-02 22:28:53,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 22:28:53,158 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-02 22:28:53,158 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-02 22:28:53,158 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-02 22:28:53,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 22:28:53,159 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-02 22:28:53,159 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-02 22:28:53,159 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-02 22:28:53,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-02 22:28:53,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 22:28:53,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 22:28:53,160 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 22:28:53,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 22:28:53,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:28:53,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 22:28:53,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 22:28:53,161 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-02 22:28:53,161 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-02 22:28:53,161 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 22:28:53,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-02 22:28:53,162 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0672e9446c2cfbd152a4f960adca314d72e71aa68b29fd9a83ebc5c34f7546dd [2021-11-02 22:28:53,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 22:28:53,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 22:28:53,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 22:28:53,555 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 22:28:53,556 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 22:28:53,557 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-02 22:28:53,621 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/03759babe/7de20d8795aa43a3b4211734c1782cba/FLAG5ff000f30 [2021-11-02 22:28:54,514 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 22:28:54,516 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i [2021-11-02 22:28:54,554 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/03759babe/7de20d8795aa43a3b4211734c1782cba/FLAG5ff000f30 [2021-11-02 22:28:55,051 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/data/03759babe/7de20d8795aa43a3b4211734c1782cba [2021-11-02 22:28:55,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 22:28:55,055 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-02 22:28:55,056 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 22:28:55,056 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 22:28:55,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 22:28:55,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:28:55" (1/1) ... [2021-11-02 22:28:55,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f4694a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:55, skipping insertion in model container [2021-11-02 22:28:55,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 10:28:55" (1/1) ... [2021-11-02 22:28:55,069 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 22:28:55,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:28:55,663 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-02 22:28:55,956 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-02 22:28:55,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:28:56,008 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-02 22:28:56,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 22:28:56,091 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-02 22:28:56,261 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-02 22:28:56,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:28:56,277 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 22:28:56,305 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[33021,33034] [2021-11-02 22:28:56,411 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_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test9-2.i[84583,84596] [2021-11-02 22:28:56,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 22:28:56,479 INFO L208 MainTranslator]: Completed translation [2021-11-02 22:28:56,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56 WrapperNode [2021-11-02 22:28:56,480 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 22:28:56,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 22:28:56,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 22:28:56,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 22:28:56,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 22:28:56,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 22:28:56,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 22:28:56,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 22:28:56,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (1/1) ... [2021-11-02 22:28:56,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 22:28:56,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/z3 [2021-11-02 22:28:56,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-02 22:28:56,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-02 22:28:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-02 22:28:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 22:28:56,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:28:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-02 22:28:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-02 22:28:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-02 22:28:56,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-02 22:28:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-02 22:28:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-02 22:28:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-02 22:28:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-02 22:28:56,896 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-02 22:28:56,897 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-02 22:28:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-02 22:28:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-02 22:28:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-02 22:28:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-02 22:28:56,897 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-02 22:28:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-02 22:28:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-02 22:28:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-02 22:28:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-02 22:28:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-02 22:28:56,898 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-02 22:28:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-02 22:28:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-02 22:28:56,899 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-02 22:28:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-02 22:28:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-02 22:28:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-02 22:28:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-02 22:28:56,900 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-02 22:28:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-02 22:28:56,901 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-02 22:28:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-02 22:28:56,902 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-02 22:28:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-02 22:28:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-02 22:28:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-02 22:28:56,903 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-02 22:28:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-02 22:28:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-02 22:28:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-02 22:28:56,904 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-02 22:28:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-02 22:28:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-02 22:28:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-02 22:28:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-02 22:28:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-02 22:28:56,905 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-02 22:28:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-02 22:28:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-02 22:28:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-02 22:28:56,906 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-02 22:28:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-02 22:28:56,907 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-02 22:28:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-02 22:28:56,908 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-02 22:28:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-02 22:28:56,909 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-02 22:28:56,910 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-02 22:28:56,910 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-02 22:28:56,910 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-02 22:28:56,910 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-02 22:28:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-02 22:28:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-02 22:28:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-02 22:28:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-02 22:28:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-02 22:28:56,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-02 22:28:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-02 22:28:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-02 22:28:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-02 22:28:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-02 22:28:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-02 22:28:56,912 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-02 22:28:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-02 22:28:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-02 22:28:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-02 22:28:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-02 22:28:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-02 22:28:56,913 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-02 22:28:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-02 22:28:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-02 22:28:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-02 22:28:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-02 22:28:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-02 22:28:56,914 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-02 22:28:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-02 22:28:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-02 22:28:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-02 22:28:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-02 22:28:56,915 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-02 22:28:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-02 22:28:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-02 22:28:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-02 22:28:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-02 22:28:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-02 22:28:56,916 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-02 22:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-02 22:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-02 22:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-02 22:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-02 22:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-02 22:28:56,917 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-02 22:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-02 22:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-02 22:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-02 22:28:56,918 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-02 22:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-02 22:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-02 22:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-02 22:28:56,919 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-02 22:28:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-02 22:28:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-02 22:28:56,920 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-02 22:28:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-02 22:28:56,921 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-02 22:28:56,924 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-02 22:28:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-02 22:28:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-02 22:28:56,926 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-02 22:28:56,927 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-02 22:28:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-02 22:28:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-02 22:28:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-02 22:28:56,928 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-02 22:28:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-02 22:28:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-02 22:28:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-02 22:28:56,935 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-02 22:28:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-02 22:28:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-02 22:28:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-02 22:28:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-02 22:28:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-02 22:28:56,936 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-02 22:28:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-02 22:28:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-02 22:28:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-02 22:28:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-02 22:28:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-02 22:28:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-02 22:28:56,937 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-02 22:28:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-02 22:28:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-02 22:28:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-02 22:28:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-02 22:28:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-02 22:28:56,938 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-02 22:28:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-02 22:28:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-02 22:28:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-02 22:28:56,939 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-02 22:28:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-02 22:28:56,940 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-02 22:28:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-02 22:28:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-02 22:28:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-02 22:28:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-02 22:28:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-02 22:28:56,941 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-02 22:28:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-02 22:28:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-02 22:28:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-02 22:28:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-02 22:28:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-02 22:28:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-02 22:28:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-02 22:28:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-02 22:28:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-02 22:28:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-02 22:28:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-02 22:28:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-02 22:28:56,943 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-02 22:28:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 22:28:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-02 22:28:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-02 22:28:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-02 22:28:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 22:28:56,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-02 22:28:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-02 22:28:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-02 22:28:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 22:28:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 22:28:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-02 22:28:56,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 22:28:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-02 22:28:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-02 22:28:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 22:28:56,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-02 22:28:56,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-02 22:28:59,025 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 22:29:03,682 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 22:29:03,682 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-02 22:29:03,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:29:03 BoogieIcfgContainer [2021-11-02 22:29:03,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 22:29:03,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 22:29:03,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 22:29:03,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 22:29:03,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 10:28:55" (1/3) ... [2021-11-02 22:29:03,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c18094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:29:03, skipping insertion in model container [2021-11-02 22:29:03,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 10:28:56" (2/3) ... [2021-11-02 22:29:03,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60c18094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 10:29:03, skipping insertion in model container [2021-11-02 22:29:03,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 10:29:03" (3/3) ... [2021-11-02 22:29:03,696 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test9-2.i [2021-11-02 22:29:03,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 22:29:03,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-02 22:29:03,752 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 22:29:03,759 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 22:29:03,759 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-02 22:29:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 2079 states, 1034 states have (on average 2.120889748549323) internal successors, (2193), 2067 states have internal predecessors, (2193), 506 states have call successors, (506), 5 states have call predecessors, (506), 5 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:03,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:29:03,865 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:03,865 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:03,866 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:03,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:03,872 INFO L85 PathProgramCache]: Analyzing trace with hash -409959422, now seen corresponding path program 1 times [2021-11-02 22:29:03,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:03,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1107056542] [2021-11-02 22:29:03,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:03,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:03,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:03,889 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:03,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-02 22:29:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:04,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:29:04,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:04,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-02 22:29:04,320 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 22:29:04,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:04,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:04,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:04,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1107056542] [2021-11-02 22:29:04,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1107056542] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:04,378 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:04,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:29:04,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759703243] [2021-11-02 22:29:04,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:04,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:04,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:04,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:04,421 INFO L87 Difference]: Start difference. First operand has 2079 states, 1034 states have (on average 2.120889748549323) internal successors, (2193), 2067 states have internal predecessors, (2193), 506 states have call successors, (506), 5 states have call predecessors, (506), 5 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:06,956 INFO L93 Difference]: Finished difference Result 2243 states and 3309 transitions. [2021-11-02 22:29:06,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:06,963 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-02 22:29:06,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:07,021 INFO L225 Difference]: With dead ends: 2243 [2021-11-02 22:29:07,021 INFO L226 Difference]: Without dead ends: 2240 [2021-11-02 22:29:07,023 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:07,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2021-11-02 22:29:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2062. [2021-11-02 22:29:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2062 states, 1034 states have (on average 2.039651837524178) internal successors, (2109), 2051 states have internal predecessors, (2109), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-02 22:29:07,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2062 states to 2062 states and 3120 transitions. [2021-11-02 22:29:07,509 INFO L78 Accepts]: Start accepts. Automaton has 2062 states and 3120 transitions. Word has length 7 [2021-11-02 22:29:07,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:07,510 INFO L470 AbstractCegarLoop]: Abstraction has 2062 states and 3120 transitions. [2021-11-02 22:29:07,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2062 states and 3120 transitions. [2021-11-02 22:29:07,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-02 22:29:07,513 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:07,513 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:07,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-02 22:29:07,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:07,727 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:07,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:07,728 INFO L85 PathProgramCache]: Analyzing trace with hash -409959421, now seen corresponding path program 1 times [2021-11-02 22:29:07,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:07,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1500956423] [2021-11-02 22:29:07,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:07,729 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:07,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:07,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:07,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-02 22:29:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:07,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:07,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:07,954 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 22:29:07,970 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 22:29:07,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:08,045 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 22:29:08,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:08,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1500956423] [2021-11-02 22:29:08,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1500956423] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:08,045 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:08,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:29:08,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044374315] [2021-11-02 22:29:08,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:08,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:08,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:08,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:08,049 INFO L87 Difference]: Start difference. First operand 2062 states and 3120 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:13,504 INFO L93 Difference]: Finished difference Result 2544 states and 3638 transitions. [2021-11-02 22:29:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:13,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-02 22:29:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:13,523 INFO L225 Difference]: With dead ends: 2544 [2021-11-02 22:29:13,523 INFO L226 Difference]: Without dead ends: 2544 [2021-11-02 22:29:13,524 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:13,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2544 states. [2021-11-02 22:29:13,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2544 to 2097. [2021-11-02 22:29:13,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1078 states have (on average 2.0296846011131726) internal successors, (2188), 2086 states have internal predecessors, (2188), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-02 22:29:13,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 3199 transitions. [2021-11-02 22:29:13,709 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 3199 transitions. Word has length 7 [2021-11-02 22:29:13,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:13,710 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 3199 transitions. [2021-11-02 22:29:13,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:13,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 3199 transitions. [2021-11-02 22:29:13,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:29:13,711 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:13,711 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:13,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:13,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:13,924 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:13,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:13,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1112436547, now seen corresponding path program 1 times [2021-11-02 22:29:13,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:13,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [62618580] [2021-11-02 22:29:13,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:13,927 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:13,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:13,928 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:13,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-02 22:29:14,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:14,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:29:14,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:14,197 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 22:29:14,217 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 22:29:14,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:14,262 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 22:29:14,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:14,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [62618580] [2021-11-02 22:29:14,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [62618580] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:14,269 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:14,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-02 22:29:14,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864580654] [2021-11-02 22:29:14,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:14,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:14,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:14,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:14,277 INFO L87 Difference]: Start difference. First operand 2097 states and 3199 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:16,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:16,404 INFO L93 Difference]: Finished difference Result 2263 states and 3383 transitions. [2021-11-02 22:29:16,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:16,407 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-02 22:29:16,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:16,423 INFO L225 Difference]: With dead ends: 2263 [2021-11-02 22:29:16,423 INFO L226 Difference]: Without dead ends: 2263 [2021-11-02 22:29:16,423 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:16,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2263 states. [2021-11-02 22:29:16,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2263 to 2050. [2021-11-02 22:29:16,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2050 states, 1078 states have (on average 1.9833024118738405) internal successors, (2138), 2039 states have internal predecessors, (2138), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-02 22:29:16,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 3149 transitions. [2021-11-02 22:29:16,651 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 3149 transitions. Word has length 12 [2021-11-02 22:29:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:16,651 INFO L470 AbstractCegarLoop]: Abstraction has 2050 states and 3149 transitions. [2021-11-02 22:29:16,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:16,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 3149 transitions. [2021-11-02 22:29:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-02 22:29:16,652 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:16,652 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:16,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:16,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:16,855 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:16,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:16,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1112436548, now seen corresponding path program 1 times [2021-11-02 22:29:16,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:16,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413130823] [2021-11-02 22:29:16,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:16,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:16,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:16,857 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:16,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-02 22:29:17,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:17,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:17,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:17,123 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 22:29:17,162 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 22:29:17,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:17,278 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 22:29:17,279 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:17,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413130823] [2021-11-02 22:29:17,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413130823] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:17,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:17,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-02 22:29:17,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139139140] [2021-11-02 22:29:17,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:17,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:17,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:17,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:17,283 INFO L87 Difference]: Start difference. First operand 2050 states and 3149 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:22,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:22,055 INFO L93 Difference]: Finished difference Result 2293 states and 3377 transitions. [2021-11-02 22:29:22,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:22,064 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-02 22:29:22,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:22,080 INFO L225 Difference]: With dead ends: 2293 [2021-11-02 22:29:22,080 INFO L226 Difference]: Without dead ends: 2293 [2021-11-02 22:29:22,080 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2293 states. [2021-11-02 22:29:22,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2293 to 2040. [2021-11-02 22:29:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1078 states have (on average 1.971243042671614) internal successors, (2125), 2029 states have internal predecessors, (2125), 506 states have call successors, (506), 5 states have call predecessors, (506), 4 states have return successors, (505), 6 states have call predecessors, (505), 505 states have call successors, (505) [2021-11-02 22:29:22,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3136 transitions. [2021-11-02 22:29:22,291 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3136 transitions. Word has length 12 [2021-11-02 22:29:22,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:22,292 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3136 transitions. [2021-11-02 22:29:22,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:22,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3136 transitions. [2021-11-02 22:29:22,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-02 22:29:22,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:22,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:22,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:22,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:22,506 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:22,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:22,507 INFO L85 PathProgramCache]: Analyzing trace with hash -164522606, now seen corresponding path program 1 times [2021-11-02 22:29:22,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:22,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6634438] [2021-11-02 22:29:22,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:22,508 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:22,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:22,509 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:22,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-02 22:29:22,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:22,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:22,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:22,864 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 22:29:22,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:22,973 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 22:29:22,973 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:22,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6634438] [2021-11-02 22:29:22,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6634438] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:22,973 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:22,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:29:22,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483328631] [2021-11-02 22:29:22,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 22:29:22,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:22,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 22:29:22,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 22:29:22,978 INFO L87 Difference]: Start difference. First operand 2040 states and 3136 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:23,348 INFO L93 Difference]: Finished difference Result 2502 states and 3633 transitions. [2021-11-02 22:29:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:23,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-02 22:29:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:23,366 INFO L225 Difference]: With dead ends: 2502 [2021-11-02 22:29:23,366 INFO L226 Difference]: Without dead ends: 2502 [2021-11-02 22:29:23,370 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 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 22:29:23,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2502 states. [2021-11-02 22:29:23,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2502 to 2209. [2021-11-02 22:29:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1246 states have (on average 1.9382022471910112) internal successors, (2415), 2197 states have internal predecessors, (2415), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:23,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3428 transitions. [2021-11-02 22:29:23,592 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3428 transitions. Word has length 15 [2021-11-02 22:29:23,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:23,593 INFO L470 AbstractCegarLoop]: Abstraction has 2209 states and 3428 transitions. [2021-11-02 22:29:23,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:23,593 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3428 transitions. [2021-11-02 22:29:23,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-02 22:29:23,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:23,595 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 22:29:23,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-02 22:29:23,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:23,809 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash 469915093, now seen corresponding path program 1 times [2021-11-02 22:29:23,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:23,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933179868] [2021-11-02 22:29:23,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:23,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:23,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:23,812 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:23,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-02 22:29:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:24,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:29:24,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:24,078 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 22:29:24,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:24,117 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 22:29:24,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:24,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1933179868] [2021-11-02 22:29:24,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1933179868] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:24,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:24,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:29:24,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729988065] [2021-11-02 22:29:24,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:24,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:24,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:24,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:24,120 INFO L87 Difference]: Start difference. First operand 2209 states and 3428 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:24,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:24,198 INFO L93 Difference]: Finished difference Result 2363 states and 3568 transitions. [2021-11-02 22:29:24,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:24,199 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-02 22:29:24,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:24,214 INFO L225 Difference]: With dead ends: 2363 [2021-11-02 22:29:24,214 INFO L226 Difference]: Without dead ends: 2363 [2021-11-02 22:29:24,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 22:29:24,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2363 states. [2021-11-02 22:29:24,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2363 to 2149. [2021-11-02 22:29:24,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1210 states have (on average 1.9247933884297521) internal successors, (2329), 2137 states have internal predecessors, (2329), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3342 transitions. [2021-11-02 22:29:24,415 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3342 transitions. Word has length 17 [2021-11-02 22:29:24,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:24,416 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 3342 transitions. [2021-11-02 22:29:24,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3342 transitions. [2021-11-02 22:29:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:29:24,418 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:24,418 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:24,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:24,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:24,635 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr431REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:24,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:24,636 INFO L85 PathProgramCache]: Analyzing trace with hash -725148639, now seen corresponding path program 1 times [2021-11-02 22:29:24,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:24,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [140556503] [2021-11-02 22:29:24,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:24,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:24,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:24,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:24,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-02 22:29:24,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:24,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:29:24,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:25,006 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 22:29:25,007 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:25,131 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 22:29:25,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:25,131 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [140556503] [2021-11-02 22:29:25,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [140556503] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:25,132 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:25,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:29:25,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974077201] [2021-11-02 22:29:25,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:25,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:25,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:25,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:25,134 INFO L87 Difference]: Start difference. First operand 2149 states and 3342 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 22:29:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:25,917 INFO L93 Difference]: Finished difference Result 2420 states and 3549 transitions. [2021-11-02 22:29:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:29:25,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 18 [2021-11-02 22:29:25,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:25,934 INFO L225 Difference]: With dead ends: 2420 [2021-11-02 22:29:25,935 INFO L226 Difference]: Without dead ends: 2420 [2021-11-02 22:29:25,936 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 22:29:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2021-11-02 22:29:26,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2151. [2021-11-02 22:29:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 1212 states have (on average 1.9232673267326732) internal successors, (2331), 2139 states have internal predecessors, (2331), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:26,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 3344 transitions. [2021-11-02 22:29:26,113 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 3344 transitions. Word has length 18 [2021-11-02 22:29:26,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:26,113 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 3344 transitions. [2021-11-02 22:29:26,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 22:29:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 3344 transitions. [2021-11-02 22:29:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-02 22:29:26,115 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:26,115 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:26,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:26,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:26,327 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -725141857, now seen corresponding path program 1 times [2021-11-02 22:29:26,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:26,328 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [831690870] [2021-11-02 22:29:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:26,328 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:26,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:26,329 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:26,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-02 22:29:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:26,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:26,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:26,617 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:29:26,618 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:29:26,619 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-02 22:29:26,669 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-02 22:29:26,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-02 22:29:26,735 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-02 22:29:26,736 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-02 22:29:26,770 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 22:29:26,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:26,873 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 22:29:26,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:26,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [831690870] [2021-11-02 22:29:26,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [831690870] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:26,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:26,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:29:26,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722432367] [2021-11-02 22:29:26,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:29:26,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:29:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:26,875 INFO L87 Difference]: Start difference. First operand 2151 states and 3344 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 22:29:28,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:28,871 INFO L93 Difference]: Finished difference Result 2466 states and 3692 transitions. [2021-11-02 22:29:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:28,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 18 [2021-11-02 22:29:28,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:28,886 INFO L225 Difference]: With dead ends: 2466 [2021-11-02 22:29:28,886 INFO L226 Difference]: Without dead ends: 2466 [2021-11-02 22:29:28,887 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 22:29:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2021-11-02 22:29:29,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2150. [2021-11-02 22:29:29,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2150 states, 1211 states have (on average 1.9232039636663913) internal successors, (2329), 2138 states have internal predecessors, (2329), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:29,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3342 transitions. [2021-11-02 22:29:29,056 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3342 transitions. Word has length 18 [2021-11-02 22:29:29,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:29,057 INFO L470 AbstractCegarLoop]: Abstraction has 2150 states and 3342 transitions. [2021-11-02 22:29:29,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 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 22:29:29,058 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3342 transitions. [2021-11-02 22:29:29,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-02 22:29:29,059 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:29,059 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:29,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:29,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:29,272 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr15REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:29,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:29,273 INFO L85 PathProgramCache]: Analyzing trace with hash -269312016, now seen corresponding path program 1 times [2021-11-02 22:29:29,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:29,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [927004622] [2021-11-02 22:29:29,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:29,273 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:29,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:29,275 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-02 22:29:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:29,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-02 22:29:29,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:29,633 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 22:29:29,633 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:29,679 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 22:29:29,679 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:29,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [927004622] [2021-11-02 22:29:29,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [927004622] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:29,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:29,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-02 22:29:29,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306766225] [2021-11-02 22:29:29,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:29,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:29,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:29,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:29,682 INFO L87 Difference]: Start difference. First operand 2150 states and 3342 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:29,725 INFO L93 Difference]: Finished difference Result 2090 states and 3256 transitions. [2021-11-02 22:29:29,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 22:29:29,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-02 22:29:29,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:29,740 INFO L225 Difference]: With dead ends: 2090 [2021-11-02 22:29:29,740 INFO L226 Difference]: Without dead ends: 2090 [2021-11-02 22:29:29,740 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:29,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-11-02 22:29:29,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2090. [2021-11-02 22:29:29,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2090 states, 1175 states have (on average 1.9089361702127658) internal successors, (2243), 2078 states have internal predecessors, (2243), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:29,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2090 states to 2090 states and 3256 transitions. [2021-11-02 22:29:29,923 INFO L78 Accepts]: Start accepts. Automaton has 2090 states and 3256 transitions. Word has length 22 [2021-11-02 22:29:29,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:29,923 INFO L470 AbstractCegarLoop]: Abstraction has 2090 states and 3256 transitions. [2021-11-02 22:29:29,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand 2090 states and 3256 transitions. [2021-11-02 22:29:29,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-02 22:29:29,924 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:29,925 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:29,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:30,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:30,138 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:30,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1110716631, now seen corresponding path program 1 times [2021-11-02 22:29:30,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:30,140 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484924904] [2021-11-02 22:29:30,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:30,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:30,141 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:30,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-02 22:29:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:30,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:30,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:30,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:30,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:30,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:30,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484924904] [2021-11-02 22:29:30,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484924904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:30,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:30,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-02 22:29:30,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006935261] [2021-11-02 22:29:30,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:29:30,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:29:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:30,522 INFO L87 Difference]: Start difference. First operand 2090 states and 3256 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:30,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:30,666 INFO L93 Difference]: Finished difference Result 2062 states and 3200 transitions. [2021-11-02 22:29:30,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:30,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-02 22:29:30,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:30,681 INFO L225 Difference]: With dead ends: 2062 [2021-11-02 22:29:30,681 INFO L226 Difference]: Without dead ends: 2062 [2021-11-02 22:29:30,682 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:30,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2062 states. [2021-11-02 22:29:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2062 to 2060. [2021-11-02 22:29:30,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2060 states, 1159 states have (on average 1.8852459016393444) internal successors, (2185), 2048 states have internal predecessors, (2185), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:30,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2060 states to 2060 states and 3198 transitions. [2021-11-02 22:29:30,876 INFO L78 Accepts]: Start accepts. Automaton has 2060 states and 3198 transitions. Word has length 24 [2021-11-02 22:29:30,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:30,877 INFO L470 AbstractCegarLoop]: Abstraction has 2060 states and 3198 transitions. [2021-11-02 22:29:30,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:30,877 INFO L276 IsEmpty]: Start isEmpty. Operand 2060 states and 3198 transitions. [2021-11-02 22:29:30,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:29:30,882 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:30,882 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:30,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:31,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:31,098 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:31,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1089939529, now seen corresponding path program 1 times [2021-11-02 22:29:31,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:31,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26640691] [2021-11-02 22:29:31,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:31,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:31,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:31,101 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:31,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-02 22:29:31,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:31,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:31,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:31,429 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 22:29:31,558 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 22:29:31,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:31,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:31,689 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:31,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26640691] [2021-11-02 22:29:31,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26640691] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:31,690 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:31,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-02 22:29:31,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907728093] [2021-11-02 22:29:31,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:31,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:31,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:31,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:31,691 INFO L87 Difference]: Start difference. First operand 2060 states and 3198 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:33,956 INFO L93 Difference]: Finished difference Result 2493 states and 3697 transitions. [2021-11-02 22:29:33,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 22:29:33,960 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-02 22:29:33,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:33,976 INFO L225 Difference]: With dead ends: 2493 [2021-11-02 22:29:33,976 INFO L226 Difference]: Without dead ends: 2493 [2021-11-02 22:29:33,976 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2493 states. [2021-11-02 22:29:34,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2493 to 2056. [2021-11-02 22:29:34,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 1159 states have (on average 1.8783433994823124) internal successors, (2177), 2044 states have internal predecessors, (2177), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:34,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3190 transitions. [2021-11-02 22:29:34,125 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3190 transitions. Word has length 38 [2021-11-02 22:29:34,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:34,126 INFO L470 AbstractCegarLoop]: Abstraction has 2056 states and 3190 transitions. [2021-11-02 22:29:34,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:34,126 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3190 transitions. [2021-11-02 22:29:34,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-02 22:29:34,127 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:34,128 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:34,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:34,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:34,340 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:34,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:34,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1089939528, now seen corresponding path program 1 times [2021-11-02 22:29:34,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:34,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583804113] [2021-11-02 22:29:34,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:34,342 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:34,342 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:34,343 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:34,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-02 22:29:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:34,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:29:34,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:34,672 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 22:29:34,944 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 22:29:34,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:35,491 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 22:29:35,492 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:35,492 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583804113] [2021-11-02 22:29:35,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583804113] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:35,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:35,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:29:35,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304943102] [2021-11-02 22:29:35,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:29:35,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:35,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:29:35,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:29:35,494 INFO L87 Difference]: Start difference. First operand 2056 states and 3190 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:42,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:42,038 INFO L93 Difference]: Finished difference Result 2547 states and 3714 transitions. [2021-11-02 22:29:42,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:29:42,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-02 22:29:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:42,048 INFO L225 Difference]: With dead ends: 2547 [2021-11-02 22:29:42,049 INFO L226 Difference]: Without dead ends: 2547 [2021-11-02 22:29:42,049 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:29:42,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2021-11-02 22:29:42,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2052. [2021-11-02 22:29:42,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1159 states have (on average 1.8714408973252805) internal successors, (2169), 2040 states have internal predecessors, (2169), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:42,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3182 transitions. [2021-11-02 22:29:42,211 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3182 transitions. Word has length 38 [2021-11-02 22:29:42,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:42,212 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 3182 transitions. [2021-11-02 22:29:42,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:42,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3182 transitions. [2021-11-02 22:29:42,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-02 22:29:42,214 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:42,214 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:42,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:42,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:42,427 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:42,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:42,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1864679286, now seen corresponding path program 1 times [2021-11-02 22:29:42,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:42,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614618859] [2021-11-02 22:29:42,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:42,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:42,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:42,429 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:42,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-02 22:29:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:42,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:29:42,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:42,948 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 22:29:42,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:43,109 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 22:29:43,109 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:43,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614618859] [2021-11-02 22:29:43,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614618859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:43,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:43,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:29:43,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207822057] [2021-11-02 22:29:43,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 22:29:43,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:43,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 22:29:43,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 22:29:43,111 INFO L87 Difference]: Start difference. First operand 2052 states and 3182 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:43,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:29:43,206 INFO L93 Difference]: Finished difference Result 2040 states and 3162 transitions. [2021-11-02 22:29:43,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 22:29:43,207 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-02 22:29:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:29:43,214 INFO L225 Difference]: With dead ends: 2040 [2021-11-02 22:29:43,214 INFO L226 Difference]: Without dead ends: 2040 [2021-11-02 22:29:43,215 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:29:43,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-11-02 22:29:43,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2040. [2021-11-02 22:29:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1147 states have (on average 1.873583260680035) internal successors, (2149), 2028 states have internal predecessors, (2149), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:29:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 3162 transitions. [2021-11-02 22:29:43,394 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 3162 transitions. Word has length 56 [2021-11-02 22:29:43,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:29:43,395 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 3162 transitions. [2021-11-02 22:29:43,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:29:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 3162 transitions. [2021-11-02 22:29:43,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-02 22:29:43,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:29:43,396 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:29:43,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-02 22:29:43,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:29:43,611 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:29:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:29:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash -324235966, now seen corresponding path program 1 times [2021-11-02 22:29:43,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:29:43,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228140873] [2021-11-02 22:29:43,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:29:43,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:29:43,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:29:43,613 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:29:43,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-02 22:29:44,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:29:44,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:29:44,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:29:44,151 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 22:29:44,159 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 22:29:44,944 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-02 22:29:44,944 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 26 treesize of output 28 [2021-11-02 22:29:44,955 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-02 22:29:44,956 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 25 treesize of output 21 [2021-11-02 22:29:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 22:29:44,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:29:51,939 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 22:29:51,939 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:29:51,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228140873] [2021-11-02 22:29:51,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228140873] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:29:51,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:29:51,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-02 22:29:51,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986076862] [2021-11-02 22:29:51,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:29:51,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:29:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:29:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=15, Unknown=2, NotChecked=0, Total=30 [2021-11-02 22:29:51,943 INFO L87 Difference]: Start difference. First operand 2040 states and 3162 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:30:04,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:04,258 INFO L93 Difference]: Finished difference Result 2241 states and 3423 transitions. [2021-11-02 22:30:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 22:30:04,260 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-02 22:30:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:04,267 INFO L225 Difference]: With dead ends: 2241 [2021-11-02 22:30:04,268 INFO L226 Difference]: Without dead ends: 2241 [2021-11-02 22:30:04,268 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=3, NotChecked=0, Total=56 [2021-11-02 22:30:04,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-11-02 22:30:04,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2002. [2021-11-02 22:30:04,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2002 states, 1147 states have (on average 1.8404533565823888) internal successors, (2111), 1990 states have internal predecessors, (2111), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:30:04,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2002 states to 2002 states and 3124 transitions. [2021-11-02 22:30:04,390 INFO L78 Accepts]: Start accepts. Automaton has 2002 states and 3124 transitions. Word has length 64 [2021-11-02 22:30:04,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:04,391 INFO L470 AbstractCegarLoop]: Abstraction has 2002 states and 3124 transitions. [2021-11-02 22:30:04,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:30:04,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2002 states and 3124 transitions. [2021-11-02 22:30:04,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:30:04,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:04,392 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:04,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:04,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:30:04,616 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:30:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:04,616 INFO L85 PathProgramCache]: Analyzing trace with hash -439724449, now seen corresponding path program 1 times [2021-11-02 22:30:04,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:30:04,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [506798472] [2021-11-02 22:30:04,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:04,617 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:30:04,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:30:04,619 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:30:04,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-02 22:30:05,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:05,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-02 22:30:05,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:05,222 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 22:30:05,236 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 22 treesize of output 18 [2021-11-02 22:30:05,283 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 22:30:05,302 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 22:30:05,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:30:05,461 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 22:30:05,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:30:05,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [506798472] [2021-11-02 22:30:05,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [506798472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:30:05,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:30:05,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-02 22:30:05,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821694386] [2021-11-02 22:30:05,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 22:30:05,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:30:05,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 22:30:05,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 22:30:05,463 INFO L87 Difference]: Start difference. First operand 2002 states and 3124 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:30:08,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:08,571 INFO L93 Difference]: Finished difference Result 2001 states and 3123 transitions. [2021-11-02 22:30:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:30:08,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-02 22:30:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:08,582 INFO L225 Difference]: With dead ends: 2001 [2021-11-02 22:30:08,582 INFO L226 Difference]: Without dead ends: 2001 [2021-11-02 22:30:08,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 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 22:30:08,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2001 states. [2021-11-02 22:30:08,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2001 to 2001. [2021-11-02 22:30:08,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2001 states, 1147 states have (on average 1.8395815170008718) internal successors, (2110), 1989 states have internal predecessors, (2110), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:30:08,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 3123 transitions. [2021-11-02 22:30:08,751 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 3123 transitions. Word has length 69 [2021-11-02 22:30:08,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:08,751 INFO L470 AbstractCegarLoop]: Abstraction has 2001 states and 3123 transitions. [2021-11-02 22:30:08,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:30:08,752 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 3123 transitions. [2021-11-02 22:30:08,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-02 22:30:08,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:08,753 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:08,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:08,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:30:08,967 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:30:08,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:08,968 INFO L85 PathProgramCache]: Analyzing trace with hash -439724448, now seen corresponding path program 1 times [2021-11-02 22:30:08,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:30:08,968 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [951740136] [2021-11-02 22:30:08,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:08,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:30:08,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:30:08,969 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:30:08,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-02 22:30:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:09,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 22:30:09,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:09,607 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 22:30:09,639 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 22:30:09,650 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 22:30:09,728 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 22:30:09,732 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 22:30:09,765 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 22:30:09,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:30:10,148 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 22:30:10,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:30:10,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [951740136] [2021-11-02 22:30:10,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [951740136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:30:10,149 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:30:10,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-02 22:30:10,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469397589] [2021-11-02 22:30:10,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 22:30:10,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:30:10,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 22:30:10,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:30:10,150 INFO L87 Difference]: Start difference. First operand 2001 states and 3123 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:30:19,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:19,079 INFO L93 Difference]: Finished difference Result 2000 states and 3122 transitions. [2021-11-02 22:30:19,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:30:19,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-02 22:30:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:19,085 INFO L225 Difference]: With dead ends: 2000 [2021-11-02 22:30:19,085 INFO L226 Difference]: Without dead ends: 2000 [2021-11-02 22:30:19,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:30:19,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2000 states. [2021-11-02 22:30:19,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2000 to 2000. [2021-11-02 22:30:19,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2000 states, 1146 states have (on average 1.8403141361256545) internal successors, (2109), 1988 states have internal predecessors, (2109), 507 states have call successors, (507), 5 states have call predecessors, (507), 4 states have return successors, (506), 7 states have call predecessors, (506), 506 states have call successors, (506) [2021-11-02 22:30:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2000 states to 2000 states and 3122 transitions. [2021-11-02 22:30:19,211 INFO L78 Accepts]: Start accepts. Automaton has 2000 states and 3122 transitions. Word has length 69 [2021-11-02 22:30:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:19,212 INFO L470 AbstractCegarLoop]: Abstraction has 2000 states and 3122 transitions. [2021-11-02 22:30:19,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-02 22:30:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 2000 states and 3122 transitions. [2021-11-02 22:30:19,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-02 22:30:19,213 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:19,213 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:19,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:19,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:30:19,428 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:30:19,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:19,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1238822906, now seen corresponding path program 1 times [2021-11-02 22:30:19,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:30:19,429 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728328075] [2021-11-02 22:30:19,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:19,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:30:19,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:30:19,431 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:30:19,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-02 22:30:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:20,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 22:30:20,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:20,340 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 22:30:20,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:30:20,543 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 22:30:20,543 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:30:20,543 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728328075] [2021-11-02 22:30:20,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728328075] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-02 22:30:20,544 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-02 22:30:20,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-02 22:30:20,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614428271] [2021-11-02 22:30:20,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 22:30:20,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:30:20,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 22:30:20,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-02 22:30:20,546 INFO L87 Difference]: Start difference. First operand 2000 states and 3122 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:20,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:20,668 INFO L93 Difference]: Finished difference Result 2010 states and 3135 transitions. [2021-11-02 22:30:20,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 22:30:20,670 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-02 22:30:20,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:20,680 INFO L225 Difference]: With dead ends: 2010 [2021-11-02 22:30:20,680 INFO L226 Difference]: Without dead ends: 2010 [2021-11-02 22:30:20,680 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-02 22:30:20,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2021-11-02 22:30:20,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2010. [2021-11-02 22:30:20,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 1154 states have (on average 1.8379549393414212) internal successors, (2121), 1997 states have internal predecessors, (2121), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-02 22:30:20,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3135 transitions. [2021-11-02 22:30:20,868 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3135 transitions. Word has length 77 [2021-11-02 22:30:20,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:20,869 INFO L470 AbstractCegarLoop]: Abstraction has 2010 states and 3135 transitions. [2021-11-02 22:30:20,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:20,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3135 transitions. [2021-11-02 22:30:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-02 22:30:20,870 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:20,870 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:20,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:21,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:30:21,087 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:30:21,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:21,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1826990010, now seen corresponding path program 1 times [2021-11-02 22:30:21,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:30:21,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [737822124] [2021-11-02 22:30:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 22:30:21,088 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:30:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:30:21,089 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:30:21,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-02 22:30:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 22:30:21,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-02 22:30:21,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:21,952 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 22:30:21,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:30:22,301 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 22:30:22,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:30:22,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [737822124] [2021-11-02 22:30:22,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [737822124] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:30:22,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:22,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-02 22:30:22,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489779708] [2021-11-02 22:30:22,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-02 22:30:22,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:30:22,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-02 22:30:22,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-02 22:30:22,303 INFO L87 Difference]: Start difference. First operand 2010 states and 3135 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:22,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:22,893 INFO L93 Difference]: Finished difference Result 2024 states and 3153 transitions. [2021-11-02 22:30:22,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-02 22:30:22,895 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-02 22:30:22,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:22,902 INFO L225 Difference]: With dead ends: 2024 [2021-11-02 22:30:22,902 INFO L226 Difference]: Without dead ends: 2020 [2021-11-02 22:30:22,903 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:30:22,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-11-02 22:30:23,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2016. [2021-11-02 22:30:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 1160 states have (on average 1.835344827586207) internal successors, (2129), 2003 states have internal predecessors, (2129), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-02 22:30:23,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 3143 transitions. [2021-11-02 22:30:23,079 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 3143 transitions. Word has length 79 [2021-11-02 22:30:23,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:23,079 INFO L470 AbstractCegarLoop]: Abstraction has 2016 states and 3143 transitions. [2021-11-02 22:30:23,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:23,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 3143 transitions. [2021-11-02 22:30:23,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-02 22:30:23,081 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:23,082 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:23,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:23,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:30:23,299 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:30:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash -278021946, now seen corresponding path program 2 times [2021-11-02 22:30:23,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:30:23,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [243071865] [2021-11-02 22:30:23,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-02 22:30:23,301 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:30:23,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:30:23,302 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:30:23,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-02 22:30:24,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-02 22:30:24,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:24,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 22:30:24,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:24,711 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 22:30:24,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:30:25,293 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 22:30:25,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:30:25,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [243071865] [2021-11-02 22:30:25,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [243071865] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:30:25,294 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:25,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-02 22:30:25,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749820212] [2021-11-02 22:30:25,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-02 22:30:25,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:30:25,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-02 22:30:25,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-02 22:30:25,296 INFO L87 Difference]: Start difference. First operand 2016 states and 3143 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:27,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:27,034 INFO L93 Difference]: Finished difference Result 2044 states and 3181 transitions. [2021-11-02 22:30:27,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-02 22:30:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-02 22:30:27,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:27,041 INFO L225 Difference]: With dead ends: 2044 [2021-11-02 22:30:27,041 INFO L226 Difference]: Without dead ends: 2040 [2021-11-02 22:30:27,042 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-02 22:30:27,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-11-02 22:30:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2028. [2021-11-02 22:30:27,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1172 states have (on average 1.8302047781569966) internal successors, (2145), 2015 states have internal predecessors, (2145), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-02 22:30:27,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 3159 transitions. [2021-11-02 22:30:27,184 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 3159 transitions. Word has length 83 [2021-11-02 22:30:27,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:27,184 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 3159 transitions. [2021-11-02 22:30:27,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:27,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 3159 transitions. [2021-11-02 22:30:27,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-02 22:30:27,185 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:27,186 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:27,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:27,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:30:27,399 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:30:27,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:27,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1598536134, now seen corresponding path program 3 times [2021-11-02 22:30:27,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:30:27,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878813195] [2021-11-02 22:30:27,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-02 22:30:27,400 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:30:27,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:30:27,402 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:30:27,441 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-02 22:30:28,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-02 22:30:28,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:28,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-02 22:30:28,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:29,361 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 22:30:29,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:30:31,004 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 22:30:31,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:30:31,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878813195] [2021-11-02 22:30:31,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878813195] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:30:31,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:31,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-02 22:30:31,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251509277] [2021-11-02 22:30:31,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-02 22:30:31,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:30:31,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-02 22:30:31,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-02 22:30:31,008 INFO L87 Difference]: Start difference. First operand 2028 states and 3159 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:39,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:30:39,155 INFO L93 Difference]: Finished difference Result 2084 states and 3237 transitions. [2021-11-02 22:30:39,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2021-11-02 22:30:39,157 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-02 22:30:39,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:30:39,164 INFO L225 Difference]: With dead ends: 2084 [2021-11-02 22:30:39,164 INFO L226 Difference]: Without dead ends: 2080 [2021-11-02 22:30:39,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1817, Invalid=4189, Unknown=0, NotChecked=0, Total=6006 [2021-11-02 22:30:39,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2021-11-02 22:30:39,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2052. [2021-11-02 22:30:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2052 states, 1196 states have (on average 1.8202341137123745) internal successors, (2177), 2039 states have internal predecessors, (2177), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-02 22:30:39,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2052 states to 2052 states and 3191 transitions. [2021-11-02 22:30:39,370 INFO L78 Accepts]: Start accepts. Automaton has 2052 states and 3191 transitions. Word has length 91 [2021-11-02 22:30:39,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:30:39,370 INFO L470 AbstractCegarLoop]: Abstraction has 2052 states and 3191 transitions. [2021-11-02 22:30:39,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:30:39,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2052 states and 3191 transitions. [2021-11-02 22:30:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-02 22:30:39,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:30:39,372 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:30:39,391 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-02 22:30:39,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:30:39,591 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:30:39,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:30:39,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1085752378, now seen corresponding path program 4 times [2021-11-02 22:30:39,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:30:39,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1369891809] [2021-11-02 22:30:39,592 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-02 22:30:39,592 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:30:39,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:30:39,593 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:30:39,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-02 22:30:40,352 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-02 22:30:40,352 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:30:40,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-02 22:30:40,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:30:41,834 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 22:30:41,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-02 22:30:47,231 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 22:30:47,232 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-02 22:30:47,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1369891809] [2021-11-02 22:30:47,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1369891809] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-02 22:30:47,232 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-02 22:30:47,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-02 22:30:47,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595952438] [2021-11-02 22:30:47,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-02 22:30:47,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-02 22:30:47,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-02 22:30:47,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-02 22:30:47,236 INFO L87 Difference]: Start difference. First operand 2052 states and 3191 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:31:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 22:31:04,843 INFO L93 Difference]: Finished difference Result 2146 states and 3313 transitions. [2021-11-02 22:31:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2021-11-02 22:31:04,844 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-02 22:31:04,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 22:31:04,850 INFO L225 Difference]: With dead ends: 2146 [2021-11-02 22:31:04,850 INFO L226 Difference]: Without dead ends: 2142 [2021-11-02 22:31:04,856 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2375 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=4552, Invalid=14908, Unknown=0, NotChecked=0, Total=19460 [2021-11-02 22:31:04,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2021-11-02 22:31:05,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2082. [2021-11-02 22:31:05,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1226 states have (on average 1.8132137030995106) internal successors, (2223), 2069 states have internal predecessors, (2223), 507 states have call successors, (507), 6 states have call predecessors, (507), 6 states have return successors, (507), 7 states have call predecessors, (507), 506 states have call successors, (507) [2021-11-02 22:31:05,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 3237 transitions. [2021-11-02 22:31:05,059 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 3237 transitions. Word has length 107 [2021-11-02 22:31:05,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 22:31:05,059 INFO L470 AbstractCegarLoop]: Abstraction has 2082 states and 3237 transitions. [2021-11-02 22:31:05,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-02 22:31:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 3237 transitions. [2021-11-02 22:31:05,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-02 22:31:05,061 INFO L505 BasicCegarLoop]: Found error trace [2021-11-02 22:31:05,061 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 22:31:05,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-02 22:31:05,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 [2021-11-02 22:31:05,275 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-02 22:31:05,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 22:31:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash 2058343814, now seen corresponding path program 5 times [2021-11-02 22:31:05,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-02 22:31:05,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801411759] [2021-11-02 22:31:05,278 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-02 22:31:05,278 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-02 22:31:05,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat [2021-11-02 22:31:05,279 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-02 22:31:05,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f4e35479-78d0-4a4a-bbd9-d4cbd8d6b63f/bin/uautomizer-tBqnrhUYjU/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-02 22:31:07,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-02 22:31:07,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-02 22:31:07,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-02 22:31:07,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 22:31:07,081 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 22:31:07,345 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-02 22:31:07,345 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-02 22:31:07,392 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 26 treesize of output 22 [2021-11-02 22:31:07,581 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 36 treesize of output 24