./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY --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 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:37:11,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:37:11,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:37:11,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:37:11,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:37:11,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:37:11,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:37:11,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:37:11,563 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:37:11,565 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:37:11,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:37:11,569 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:37:11,571 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:37:11,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:37:11,579 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:37:11,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:37:11,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:37:11,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:37:11,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:37:11,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:37:11,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:37:11,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:37:11,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:37:11,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:37:11,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:37:11,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:37:11,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:37:11,617 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:37:11,617 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:37:11,619 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:37:11,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:37:11,623 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:37:11,624 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:37:11,625 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:37:11,626 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:37:11,626 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:37:11,627 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:37:11,628 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:37:11,628 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:37:11,629 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:37:11,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:37:11,633 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-07 07:37:11,689 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:37:11,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:37:11,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:37:11,691 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:37:11,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:37:11,699 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:37:11,699 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:37:11,699 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:37:11,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:37:11,699 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:37:11,700 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:37:11,700 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:37:11,700 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:37:11,700 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:37:11,700 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:37:11,701 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:37:11,701 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:37:11,701 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:37:11,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:37:11,701 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:37:11,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:37:11,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:37:11,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:37:11,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:37:11,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:37:11,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:37:11,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 07:37:11,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 07:37:11,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:37:11,704 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2021-11-07 07:37:12,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:37:12,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:37:12,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:37:12,079 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:37:12,080 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:37:12,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 07:37:12,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/72d7d4bcb/0b25922058c846c6abebf9d6c88cf031/FLAG83e2daa68 [2021-11-07 07:37:12,810 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:37:12,810 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 07:37:12,837 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/72d7d4bcb/0b25922058c846c6abebf9d6c88cf031/FLAG83e2daa68 [2021-11-07 07:37:12,993 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/72d7d4bcb/0b25922058c846c6abebf9d6c88cf031 [2021-11-07 07:37:12,995 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:37:12,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:37:13,012 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:37:13,012 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:37:13,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:37:13,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:37:12" (1/1) ... [2021-11-07 07:37:13,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27088f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:13, skipping insertion in model container [2021-11-07 07:37:13,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:37:12" (1/1) ... [2021-11-07 07:37:13,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:37:13,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:37:13,534 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 07:37:13,700 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 07:37:13,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:37:13,719 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) [2021-11-07 07:37:13,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@10eee92f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:13, skipping insertion in model container [2021-11-07 07:37:13,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:37:13,723 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-07 07:37:13,725 INFO L168 Benchmark]: Toolchain (without parser) took 726.99 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 50.7 MB in the beginning and 74.4 MB in the end (delta: -23.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:37:13,726 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 07:37:13,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.25 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 50.5 MB in the beginning and 74.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2021-11-07 07:37:13,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory is still 69.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.25 ms. Allocated memory was 88.1 MB in the beginning and 109.1 MB in the end (delta: 21.0 MB). Free memory was 50.5 MB in the beginning and 74.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 736]: 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY --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 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 07:37:16,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 07:37:16,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 07:37:16,191 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 07:37:16,192 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 07:37:16,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 07:37:16,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 07:37:16,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 07:37:16,212 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 07:37:16,220 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 07:37:16,222 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 07:37:16,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 07:37:16,224 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 07:37:16,228 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 07:37:16,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 07:37:16,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 07:37:16,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 07:37:16,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 07:37:16,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 07:37:16,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 07:37:16,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 07:37:16,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 07:37:16,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 07:37:16,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 07:37:16,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 07:37:16,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 07:37:16,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 07:37:16,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 07:37:16,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 07:37:16,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 07:37:16,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 07:37:16,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 07:37:16,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 07:37:16,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 07:37:16,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 07:37:16,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 07:37:16,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 07:37:16,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 07:37:16,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 07:37:16,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 07:37:16,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 07:37:16,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-07 07:37:16,350 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 07:37:16,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 07:37:16,351 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 07:37:16,351 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 07:37:16,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 07:37:16,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 07:37:16,354 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 07:37:16,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 07:37:16,354 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 07:37:16,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-07 07:37:16,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 07:37:16,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 07:37:16,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 07:37:16,356 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-07 07:37:16,357 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-07 07:37:16,357 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-07 07:37:16,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 07:37:16,357 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 07:37:16,357 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 07:37:16,358 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 07:37:16,358 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 07:37:16,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 07:37:16,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 07:37:16,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 07:37:16,359 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 07:37:16,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:37:16,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 07:37:16,360 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 07:37:16,360 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 07:37:16,360 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 07:37:16,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 07:37:16,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 07:37:16,361 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2021-11-07 07:37:16,772 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 07:37:16,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 07:37:16,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 07:37:16,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 07:37:16,801 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 07:37:16,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 07:37:16,870 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/173deffc6/82a3f4357b3047e7a9799ddde0e4af7f/FLAGaf3089850 [2021-11-07 07:37:17,575 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 07:37:17,576 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 07:37:17,607 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/173deffc6/82a3f4357b3047e7a9799ddde0e4af7f/FLAGaf3089850 [2021-11-07 07:37:17,738 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/data/173deffc6/82a3f4357b3047e7a9799ddde0e4af7f [2021-11-07 07:37:17,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 07:37:17,741 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-07 07:37:17,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 07:37:17,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 07:37:17,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 07:37:17,748 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:37:17" (1/1) ... [2021-11-07 07:37:17,749 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cb00a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:17, skipping insertion in model container [2021-11-07 07:37:17,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 07:37:17" (1/1) ... [2021-11-07 07:37:17,756 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 07:37:17,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:37:18,356 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 07:37:18,550 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 07:37:18,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:37:18,593 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-07 07:37:18,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 07:37:18,646 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 07:37:18,738 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 07:37:18,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:37:18,749 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 07:37:18,793 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 07:37:18,875 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_11ef5ca7-5468-4059-82ee-bfa836ffeded/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 07:37:18,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 07:37:18,939 INFO L208 MainTranslator]: Completed translation [2021-11-07 07:37:18,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18 WrapperNode [2021-11-07 07:37:18,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 07:37:18,941 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 07:37:18,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 07:37:18,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 07:37:18,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:18,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:19,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:19,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:19,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:19,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:19,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:19,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 07:37:19,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 07:37:19,179 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 07:37:19,179 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 07:37:19,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (1/1) ... [2021-11-07 07:37:19,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 07:37:19,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 07:37:19,211 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 07:37:19,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 07:37:19,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-07 07:37:19,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 07:37:19,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:37:19,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-07 07:37:19,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-07 07:37:19,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-07 07:37:19,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-07 07:37:19,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-07 07:37:19,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-07 07:37:19,261 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-07 07:37:19,261 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-07 07:37:19,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-07 07:37:19,262 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-07 07:37:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-07 07:37:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-07 07:37:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-07 07:37:19,262 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-07 07:37:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 07:37:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-07 07:37:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-07 07:37:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-07 07:37:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-07 07:37:19,263 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-07 07:37:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-07 07:37:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-07 07:37:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-07 07:37:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-07 07:37:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-07 07:37:19,264 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-07 07:37:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-07 07:37:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-07 07:37:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-07 07:37:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-07 07:37:19,265 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-07 07:37:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-07 07:37:19,266 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-07 07:37:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-07 07:37:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-07 07:37:19,267 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-07 07:37:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-07 07:37:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-07 07:37:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-07 07:37:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-07 07:37:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-07 07:37:19,268 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-07 07:37:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-07 07:37:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-07 07:37:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-07 07:37:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-07 07:37:19,269 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-07 07:37:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-07 07:37:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-07 07:37:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-07 07:37:19,270 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-07 07:37:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-07 07:37:19,271 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-07 07:37:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-07 07:37:19,272 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-07 07:37:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-07 07:37:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-07 07:37:19,273 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-07 07:37:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-07 07:37:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-07 07:37:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-07 07:37:19,274 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-07 07:37:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-07 07:37:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-07 07:37:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-07 07:37:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-07 07:37:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-07 07:37:19,275 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-07 07:37:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-07 07:37:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-07 07:37:19,276 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-07 07:37:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-07 07:37:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-07 07:37:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-07 07:37:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-07 07:37:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-07 07:37:19,277 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-07 07:37:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-07 07:37:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-07 07:37:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-07 07:37:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-07 07:37:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-07 07:37:19,278 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-07 07:37:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-07 07:37:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-07 07:37:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-07 07:37:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-07 07:37:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-07 07:37:19,279 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-07 07:37:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-07 07:37:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-07 07:37:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-07 07:37:19,280 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-07 07:37:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-07 07:37:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-07 07:37:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-07 07:37:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-07 07:37:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-07 07:37:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-07 07:37:19,281 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-07 07:37:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-07 07:37:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-07 07:37:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-07 07:37:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-07 07:37:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-07 07:37:19,282 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-07 07:37:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-07 07:37:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-07 07:37:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-07 07:37:19,283 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-07 07:37:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-07 07:37:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-07 07:37:19,284 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-07 07:37:19,285 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-07 07:37:19,285 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-07 07:37:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-07 07:37:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-07 07:37:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-07 07:37:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-07 07:37:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-07 07:37:19,289 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-07 07:37:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-07 07:37:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-07 07:37:19,290 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-07 07:37:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-07 07:37:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-07 07:37:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-07 07:37:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-07 07:37:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-07 07:37:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-07 07:37:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-07 07:37:19,297 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-07 07:37:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-07 07:37:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-07 07:37:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-07 07:37:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-07 07:37:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-07 07:37:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-07 07:37:19,298 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-07 07:37:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-07 07:37:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-07 07:37:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-07 07:37:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-07 07:37:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-07 07:37:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-07 07:37:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-07 07:37:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-07 07:37:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-07 07:37:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-07 07:37:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-07 07:37:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-07 07:37:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-07 07:37:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-07 07:37:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-07 07:37:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-07 07:37:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-07 07:37:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-07 07:37:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-07 07:37:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-07 07:37:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-07 07:37:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-07 07:37:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-07 07:37:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-07 07:37:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-07 07:37:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-07 07:37:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-07 07:37:19,302 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-07 07:37:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-07 07:37:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-07 07:37:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-07 07:37:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-07 07:37:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-07 07:37:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 07:37:19,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-07 07:37:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-07 07:37:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-07 07:37:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 07:37:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 07:37:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 07:37:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 07:37:19,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 07:37:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 07:37:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-07 07:37:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 07:37:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-07 07:37:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 07:37:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 07:37:19,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-07 07:37:19,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-07 07:37:19,941 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 07:37:24,653 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 07:37:24,654 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-07 07:37:24,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:37:24 BoogieIcfgContainer [2021-11-07 07:37:24,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 07:37:24,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 07:37:24,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 07:37:24,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 07:37:24,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 07:37:17" (1/3) ... [2021-11-07 07:37:24,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c4e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:37:24, skipping insertion in model container [2021-11-07 07:37:24,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 07:37:18" (2/3) ... [2021-11-07 07:37:24,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53c4e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 07:37:24, skipping insertion in model container [2021-11-07 07:37:24,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 07:37:24" (3/3) ... [2021-11-07 07:37:24,671 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-1.i [2021-11-07 07:37:24,676 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 07:37:24,677 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 534 error locations. [2021-11-07 07:37:24,724 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 07:37:24,731 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 [2021-11-07 07:37:24,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 534 error locations. [2021-11-07 07:37:24,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-07 07:37:24,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:37:24,786 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:24,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:37:24,787 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:24,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:24,793 INFO L85 PathProgramCache]: Analyzing trace with hash 976431319, now seen corresponding path program 1 times [2021-11-07 07:37:24,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:24,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1211079899] [2021-11-07 07:37:24,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:24,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:24,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:24,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:24,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 07:37:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:25,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:25,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:25,164 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 [2021-11-07 07:37:25,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:25,185 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:25,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:25,246 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1211079899] [2021-11-07 07:37:25,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1211079899] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:25,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:25,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:37:25,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457668020] [2021-11-07 07:37:25,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:37:25,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:37:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:37:25,283 INFO L87 Difference]: Start difference. First operand has 1080 states, 532 states have (on average 2.2406015037593985) internal successors, (1192), 1068 states have internal predecessors, (1192), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) 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) [2021-11-07 07:37:27,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:27,285 INFO L93 Difference]: Finished difference Result 1075 states and 1140 transitions. [2021-11-07 07:37:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:37:27,291 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 [2021-11-07 07:37:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:27,314 INFO L225 Difference]: With dead ends: 1075 [2021-11-07 07:37:27,314 INFO L226 Difference]: Without dead ends: 1072 [2021-11-07 07:37:27,315 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 [2021-11-07 07:37:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2021-11-07 07:37:27,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1064. [2021-11-07 07:37:27,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 532 states have (on average 2.0845864661654137) internal successors, (1109), 1053 states have internal predecessors, (1109), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:27,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1130 transitions. [2021-11-07 07:37:27,437 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1130 transitions. Word has length 7 [2021-11-07 07:37:27,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:27,437 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1130 transitions. [2021-11-07 07:37:27,438 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) [2021-11-07 07:37:27,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1130 transitions. [2021-11-07 07:37:27,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 07:37:27,438 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:27,438 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:37:27,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 07:37:27,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:27,647 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:27,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:27,647 INFO L85 PathProgramCache]: Analyzing trace with hash 976431320, now seen corresponding path program 1 times [2021-11-07 07:37:27,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:27,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [672793100] [2021-11-07 07:37:27,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:27,649 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:27,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:27,650 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:27,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 07:37:27,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:27,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:37:27,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:27,873 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 [2021-11-07 07:37:27,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:27,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:27,964 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:27,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [672793100] [2021-11-07 07:37:27,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [672793100] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:27,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:27,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:37:27,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015647659] [2021-11-07 07:37:27,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:37:27,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:27,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:37:27,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:37:27,967 INFO L87 Difference]: Start difference. First operand 1064 states and 1130 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) [2021-11-07 07:37:33,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:33,268 INFO L93 Difference]: Finished difference Result 1538 states and 1638 transitions. [2021-11-07 07:37:33,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:37:33,269 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 [2021-11-07 07:37:33,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:33,280 INFO L225 Difference]: With dead ends: 1538 [2021-11-07 07:37:33,280 INFO L226 Difference]: Without dead ends: 1538 [2021-11-07 07:37:33,281 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 [2021-11-07 07:37:33,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2021-11-07 07:37:33,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1099. [2021-11-07 07:37:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 576 states have (on average 2.0625) internal successors, (1188), 1088 states have internal predecessors, (1188), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:33,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1209 transitions. [2021-11-07 07:37:33,328 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1209 transitions. Word has length 7 [2021-11-07 07:37:33,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:33,328 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1209 transitions. [2021-11-07 07:37:33,329 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) [2021-11-07 07:37:33,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1209 transitions. [2021-11-07 07:37:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:37:33,329 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:33,330 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:37:33,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-07 07:37:33,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:33,542 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:33,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:33,543 INFO L85 PathProgramCache]: Analyzing trace with hash -499465612, now seen corresponding path program 1 times [2021-11-07 07:37:33,543 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:33,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599730730] [2021-11-07 07:37:33,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:33,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:33,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:33,545 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:33,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 07:37:33,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:33,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:33,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:33,781 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 [2021-11-07 07:37:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:33,802 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:33,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:33,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:33,842 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599730730] [2021-11-07 07:37:33,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599730730] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:33,842 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:33,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 07:37:33,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480467100] [2021-11-07 07:37:33,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 07:37:33,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:33,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 07:37:33,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 07:37:33,844 INFO L87 Difference]: Start difference. First operand 1099 states and 1209 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) [2021-11-07 07:37:36,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:36,031 INFO L93 Difference]: Finished difference Result 1427 states and 1562 transitions. [2021-11-07 07:37:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:37:36,033 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 [2021-11-07 07:37:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:36,042 INFO L225 Difference]: With dead ends: 1427 [2021-11-07 07:37:36,042 INFO L226 Difference]: Without dead ends: 1427 [2021-11-07 07:37:36,042 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 [2021-11-07 07:37:36,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-07 07:37:36,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1050. [2021-11-07 07:37:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 576 states have (on average 1.9722222222222223) internal successors, (1136), 1039 states have internal predecessors, (1136), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:36,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1157 transitions. [2021-11-07 07:37:36,083 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1157 transitions. Word has length 12 [2021-11-07 07:37:36,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:36,084 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1157 transitions. [2021-11-07 07:37:36,084 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) [2021-11-07 07:37:36,085 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1157 transitions. [2021-11-07 07:37:36,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 07:37:36,085 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:36,086 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:37:36,103 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 07:37:36,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:36,306 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:36,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:36,306 INFO L85 PathProgramCache]: Analyzing trace with hash -499465611, now seen corresponding path program 1 times [2021-11-07 07:37:36,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:36,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835599596] [2021-11-07 07:37:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:36,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:36,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:36,309 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:36,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 07:37:36,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:36,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:37:36,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:36,539 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 [2021-11-07 07:37:36,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:36,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:36,680 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:36,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835599596] [2021-11-07 07:37:36,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835599596] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:36,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:36,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-07 07:37:36,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498151715] [2021-11-07 07:37:36,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:37:36,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:36,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:37:36,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:37:36,683 INFO L87 Difference]: Start difference. First operand 1050 states and 1157 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) [2021-11-07 07:37:40,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:40,928 INFO L93 Difference]: Finished difference Result 1470 states and 1569 transitions. [2021-11-07 07:37:40,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:37:40,929 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 [2021-11-07 07:37:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:40,936 INFO L225 Difference]: With dead ends: 1470 [2021-11-07 07:37:40,936 INFO L226 Difference]: Without dead ends: 1470 [2021-11-07 07:37:40,937 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 [2021-11-07 07:37:40,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1470 states. [2021-11-07 07:37:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1470 to 1040. [2021-11-07 07:37:40,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1040 states, 576 states have (on average 1.9496527777777777) internal successors, (1123), 1029 states have internal predecessors, (1123), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:40,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1040 states to 1040 states and 1144 transitions. [2021-11-07 07:37:40,966 INFO L78 Accepts]: Start accepts. Automaton has 1040 states and 1144 transitions. Word has length 12 [2021-11-07 07:37:40,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:40,967 INFO L470 AbstractCegarLoop]: Abstraction has 1040 states and 1144 transitions. [2021-11-07 07:37:40,967 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) [2021-11-07 07:37:40,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1040 states and 1144 transitions. [2021-11-07 07:37:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-07 07:37:40,968 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:40,968 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:37:40,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:41,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:41,179 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:41,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:41,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1684895394, now seen corresponding path program 1 times [2021-11-07 07:37:41,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:41,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43146530] [2021-11-07 07:37:41,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:41,180 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:41,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:41,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:41,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 07:37:41,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:41,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:37:41,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:41,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:41,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:41,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:41,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:41,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43146530] [2021-11-07 07:37:41,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43146530] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:41,571 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:41,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:37:41,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631806909] [2021-11-07 07:37:41,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:37:41,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:41,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:37:41,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:37:41,578 INFO L87 Difference]: Start difference. First operand 1040 states and 1144 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:37:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:42,315 INFO L93 Difference]: Finished difference Result 1486 states and 1622 transitions. [2021-11-07 07:37:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:37:42,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-07 07:37:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:42,324 INFO L225 Difference]: With dead ends: 1486 [2021-11-07 07:37:42,324 INFO L226 Difference]: Without dead ends: 1486 [2021-11-07 07:37:42,325 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:37:42,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1486 states. [2021-11-07 07:37:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1486 to 1276. [2021-11-07 07:37:42,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1276 states, 812 states have (on average 1.937192118226601) internal successors, (1573), 1265 states have internal predecessors, (1573), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1276 states to 1276 states and 1594 transitions. [2021-11-07 07:37:42,367 INFO L78 Accepts]: Start accepts. Automaton has 1276 states and 1594 transitions. Word has length 15 [2021-11-07 07:37:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:42,369 INFO L470 AbstractCegarLoop]: Abstraction has 1276 states and 1594 transitions. [2021-11-07 07:37:42,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:37:42,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1276 states and 1594 transitions. [2021-11-07 07:37:42,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 07:37:42,371 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:42,371 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:37:42,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:42,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:42,582 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr532ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash 692149927, now seen corresponding path program 1 times [2021-11-07 07:37:42,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:42,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425362786] [2021-11-07 07:37:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:42,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:42,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:42,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 07:37:42,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:42,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:37:42,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:42,869 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:37:42,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:37:42,870 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-07 07:37:42,938 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-07 07:37:42,939 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 [2021-11-07 07:37:43,014 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-07 07:37:43,015 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 [2021-11-07 07:37:43,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:43,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:43,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:43,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:43,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425362786] [2021-11-07 07:37:43,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425362786] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:43,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:43,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:37:43,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149397837] [2021-11-07 07:37:43,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:37:43,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:43,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:37:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:37:43,135 INFO L87 Difference]: Start difference. First operand 1276 states and 1594 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:37:45,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:45,019 INFO L93 Difference]: Finished difference Result 1639 states and 2018 transitions. [2021-11-07 07:37:45,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:37:45,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-07 07:37:45,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:45,028 INFO L225 Difference]: With dead ends: 1639 [2021-11-07 07:37:45,029 INFO L226 Difference]: Without dead ends: 1639 [2021-11-07 07:37:45,029 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:37:45,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2021-11-07 07:37:45,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1275. [2021-11-07 07:37:45,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1275 states, 811 states have (on average 1.93711467324291) internal successors, (1571), 1264 states have internal predecessors, (1571), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:45,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1275 states to 1275 states and 1592 transitions. [2021-11-07 07:37:45,065 INFO L78 Accepts]: Start accepts. Automaton has 1275 states and 1592 transitions. Word has length 16 [2021-11-07 07:37:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:45,065 INFO L470 AbstractCegarLoop]: Abstraction has 1275 states and 1592 transitions. [2021-11-07 07:37:45,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 07:37:45,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1275 states and 1592 transitions. [2021-11-07 07:37:45,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-07 07:37:45,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:45,067 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] [2021-11-07 07:37:45,079 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:45,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:45,280 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:45,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:45,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1440200288, now seen corresponding path program 1 times [2021-11-07 07:37:45,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:45,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1051626896] [2021-11-07 07:37:45,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:45,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:45,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:45,282 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:45,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 07:37:45,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:45,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 07:37:45,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:45,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:45,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:45,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:45,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:45,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1051626896] [2021-11-07 07:37:45,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1051626896] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:45,705 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:45,705 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 07:37:45,705 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495596917] [2021-11-07 07:37:45,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:37:45,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:45,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:37:45,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:37:45,708 INFO L87 Difference]: Start difference. First operand 1275 states and 1592 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) [2021-11-07 07:37:45,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:45,733 INFO L93 Difference]: Finished difference Result 1215 states and 1506 transitions. [2021-11-07 07:37:45,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 07:37:45,734 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 [2021-11-07 07:37:45,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:45,740 INFO L225 Difference]: With dead ends: 1215 [2021-11-07 07:37:45,740 INFO L226 Difference]: Without dead ends: 1215 [2021-11-07 07:37:45,740 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 [2021-11-07 07:37:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2021-11-07 07:37:45,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1215. [2021-11-07 07:37:45,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 775 states have (on average 1.9161290322580644) internal successors, (1485), 1204 states have internal predecessors, (1485), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:45,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1506 transitions. [2021-11-07 07:37:45,769 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1506 transitions. Word has length 22 [2021-11-07 07:37:45,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:45,770 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1506 transitions. [2021-11-07 07:37:45,770 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) [2021-11-07 07:37:45,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1506 transitions. [2021-11-07 07:37:45,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-07 07:37:45,771 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:45,771 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] [2021-11-07 07:37:45,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:45,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:45,985 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1053008550, now seen corresponding path program 1 times [2021-11-07 07:37:45,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:45,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [808176472] [2021-11-07 07:37:45,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:45,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:45,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:45,987 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:45,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 07:37:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:46,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:37:46,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:46,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:46,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:46,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:46,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:46,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [808176472] [2021-11-07 07:37:46,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [808176472] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:46,395 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:46,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 07:37:46,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064875258] [2021-11-07 07:37:46,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:37:46,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:46,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:37:46,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:37:46,397 INFO L87 Difference]: Start difference. First operand 1215 states and 1506 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) [2021-11-07 07:37:46,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:46,504 INFO L93 Difference]: Finished difference Result 1187 states and 1450 transitions. [2021-11-07 07:37:46,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:37:46,505 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 [2021-11-07 07:37:46,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:46,513 INFO L225 Difference]: With dead ends: 1187 [2021-11-07 07:37:46,513 INFO L226 Difference]: Without dead ends: 1187 [2021-11-07 07:37:46,514 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 [2021-11-07 07:37:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2021-11-07 07:37:46,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1185. [2021-11-07 07:37:46,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 759 states have (on average 1.8801054018445322) internal successors, (1427), 1174 states have internal predecessors, (1427), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1448 transitions. [2021-11-07 07:37:46,543 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1448 transitions. Word has length 24 [2021-11-07 07:37:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:46,544 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1448 transitions. [2021-11-07 07:37:46,544 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) [2021-11-07 07:37:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1448 transitions. [2021-11-07 07:37:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 07:37:46,545 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:46,545 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] [2021-11-07 07:37:46,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:46,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:46,764 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:46,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash 646849896, now seen corresponding path program 1 times [2021-11-07 07:37:46,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:46,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1124392346] [2021-11-07 07:37:46,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:46,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:46,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:46,767 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:46,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 07:37:47,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:47,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:37:47,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:47,111 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 [2021-11-07 07:37:47,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:47,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:47,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:47,461 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:47,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1124392346] [2021-11-07 07:37:47,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1124392346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:47,462 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:47,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 07:37:47,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589337807] [2021-11-07 07:37:47,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:37:47,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:37:47,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:37:47,466 INFO L87 Difference]: Start difference. First operand 1185 states and 1448 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) [2021-11-07 07:37:49,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:49,474 INFO L93 Difference]: Finished difference Result 1656 states and 2041 transitions. [2021-11-07 07:37:49,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 07:37:49,475 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 [2021-11-07 07:37:49,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:49,483 INFO L225 Difference]: With dead ends: 1656 [2021-11-07 07:37:49,484 INFO L226 Difference]: Without dead ends: 1656 [2021-11-07 07:37:49,484 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 [2021-11-07 07:37:49,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2021-11-07 07:37:49,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1181. [2021-11-07 07:37:49,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 759 states have (on average 1.8695652173913044) internal successors, (1419), 1170 states have internal predecessors, (1419), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:49,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1440 transitions. [2021-11-07 07:37:49,513 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1440 transitions. Word has length 38 [2021-11-07 07:37:49,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:49,514 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1440 transitions. [2021-11-07 07:37:49,514 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) [2021-11-07 07:37:49,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1440 transitions. [2021-11-07 07:37:49,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-07 07:37:49,515 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:49,515 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] [2021-11-07 07:37:49,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:49,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:49,727 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:49,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash 646849897, now seen corresponding path program 1 times [2021-11-07 07:37:49,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:49,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854145783] [2021-11-07 07:37:49,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:49,728 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:49,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:49,729 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:49,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 07:37:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:50,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:37:50,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:50,051 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 [2021-11-07 07:37:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:50,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:50,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:50,854 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:50,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854145783] [2021-11-07 07:37:50,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854145783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:50,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:50,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:37:50,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545711812] [2021-11-07 07:37:50,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:37:50,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:50,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:37:50,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:37:50,856 INFO L87 Difference]: Start difference. First operand 1181 states and 1440 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) [2021-11-07 07:37:57,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:57,785 INFO L93 Difference]: Finished difference Result 1787 states and 2194 transitions. [2021-11-07 07:37:57,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 07:37:57,786 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 [2021-11-07 07:37:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:57,793 INFO L225 Difference]: With dead ends: 1787 [2021-11-07 07:37:57,793 INFO L226 Difference]: Without dead ends: 1787 [2021-11-07 07:37:57,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-07 07:37:57,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2021-11-07 07:37:57,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1177. [2021-11-07 07:37:57,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 759 states have (on average 1.8590250329380764) internal successors, (1411), 1166 states have internal predecessors, (1411), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:57,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1432 transitions. [2021-11-07 07:37:57,821 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1432 transitions. Word has length 38 [2021-11-07 07:37:57,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:57,822 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1432 transitions. [2021-11-07 07:37:57,822 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) [2021-11-07 07:37:57,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1432 transitions. [2021-11-07 07:37:57,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-07 07:37:57,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:57,824 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] [2021-11-07 07:37:57,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:58,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:58,037 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:58,037 INFO L85 PathProgramCache]: Analyzing trace with hash -927296089, now seen corresponding path program 1 times [2021-11-07 07:37:58,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:58,039 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [292690186] [2021-11-07 07:37:58,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:58,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:58,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:58,040 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:58,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 07:37:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:58,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:37:58,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:58,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:58,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:37:58,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:37:58,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:37:58,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [292690186] [2021-11-07 07:37:58,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [292690186] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:37:58,715 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:37:58,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:37:58,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511165705] [2021-11-07 07:37:58,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 07:37:58,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:37:58,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 07:37:58,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 07:37:58,717 INFO L87 Difference]: Start difference. First operand 1177 states and 1432 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) [2021-11-07 07:37:58,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:37:58,772 INFO L93 Difference]: Finished difference Result 1165 states and 1412 transitions. [2021-11-07 07:37:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 07:37:58,773 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 [2021-11-07 07:37:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:37:58,778 INFO L225 Difference]: With dead ends: 1165 [2021-11-07 07:37:58,778 INFO L226 Difference]: Without dead ends: 1165 [2021-11-07 07:37:58,779 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 [2021-11-07 07:37:58,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-07 07:37:58,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1165. [2021-11-07 07:37:58,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 747 states have (on average 1.8621151271753682) internal successors, (1391), 1154 states have internal predecessors, (1391), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:37:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1412 transitions. [2021-11-07 07:37:58,805 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1412 transitions. Word has length 56 [2021-11-07 07:37:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:37:58,806 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 1412 transitions. [2021-11-07 07:37:58,806 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) [2021-11-07 07:37:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1412 transitions. [2021-11-07 07:37:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 07:37:58,808 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:37:58,809 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] [2021-11-07 07:37:58,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 07:37:59,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:37:59,037 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:37:59,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:37:59,037 INFO L85 PathProgramCache]: Analyzing trace with hash 548320627, now seen corresponding path program 1 times [2021-11-07 07:37:59,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:37:59,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1634302179] [2021-11-07 07:37:59,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:37:59,038 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:37:59,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:37:59,039 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:37:59,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 07:37:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:37:59,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:37:59,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:37:59,674 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 [2021-11-07 07:37:59,682 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 [2021-11-07 07:38:00,464 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-07 07:38:00,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-07 07:38:00,486 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-07 07:38:00,486 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-07 07:38:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:00,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:38:05,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:05,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:38:05,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1634302179] [2021-11-07 07:38:05,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1634302179] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:05,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:05,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-07 07:38:05,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197577098] [2021-11-07 07:38:05,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:38:05,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:38:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:38:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-07 07:38:05,658 INFO L87 Difference]: Start difference. First operand 1165 states and 1412 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) [2021-11-07 07:38:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:22,067 INFO L93 Difference]: Finished difference Result 2114 states and 2669 transitions. [2021-11-07 07:38:22,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 07:38:22,070 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 [2021-11-07 07:38:22,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:22,079 INFO L225 Difference]: With dead ends: 2114 [2021-11-07 07:38:22,079 INFO L226 Difference]: Without dead ends: 2114 [2021-11-07 07:38:22,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-07 07:38:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2114 states. [2021-11-07 07:38:22,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2114 to 1127. [2021-11-07 07:38:22,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 747 states have (on average 1.8112449799196788) internal successors, (1353), 1116 states have internal predecessors, (1353), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:38:22,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1374 transitions. [2021-11-07 07:38:22,109 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1374 transitions. Word has length 64 [2021-11-07 07:38:22,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:22,110 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1374 transitions. [2021-11-07 07:38:22,110 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) [2021-11-07 07:38:22,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1374 transitions. [2021-11-07 07:38:22,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 07:38:22,111 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:22,112 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] [2021-11-07 07:38:22,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-07 07:38:22,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:38:22,328 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:38:22,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:22,328 INFO L85 PathProgramCache]: Analyzing trace with hash -812720204, now seen corresponding path program 1 times [2021-11-07 07:38:22,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:38:22,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626711311] [2021-11-07 07:38:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:22,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:38:22,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:38:22,330 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:38:22,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 07:38:22,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:22,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 07:38:22,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:22,920 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 [2021-11-07 07:38:22,937 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 [2021-11-07 07:38:22,980 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 [2021-11-07 07:38:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:22,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:38:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:23,129 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:38:23,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626711311] [2021-11-07 07:38:23,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [626711311] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:23,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:23,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 07:38:23,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909094634] [2021-11-07 07:38:23,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 07:38:23,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:38:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 07:38:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 07:38:23,131 INFO L87 Difference]: Start difference. First operand 1127 states and 1374 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) [2021-11-07 07:38:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:25,987 INFO L93 Difference]: Finished difference Result 1126 states and 1373 transitions. [2021-11-07 07:38:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:38:25,987 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 [2021-11-07 07:38:25,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:25,994 INFO L225 Difference]: With dead ends: 1126 [2021-11-07 07:38:25,994 INFO L226 Difference]: Without dead ends: 1126 [2021-11-07 07:38:25,995 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 07:38:25,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-11-07 07:38:26,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1126. [2021-11-07 07:38:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 747 states have (on average 1.8099062918340028) internal successors, (1352), 1115 states have internal predecessors, (1352), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:38:26,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1373 transitions. [2021-11-07 07:38:26,017 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1373 transitions. Word has length 69 [2021-11-07 07:38:26,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:26,017 INFO L470 AbstractCegarLoop]: Abstraction has 1126 states and 1373 transitions. [2021-11-07 07:38:26,017 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) [2021-11-07 07:38:26,018 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1373 transitions. [2021-11-07 07:38:26,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-07 07:38:26,019 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:26,019 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] [2021-11-07 07:38:26,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:26,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:38:26,234 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:38:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash -812720203, now seen corresponding path program 1 times [2021-11-07 07:38:26,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:38:26,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983989449] [2021-11-07 07:38:26,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:26,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:38:26,236 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:38:26,237 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:38:26,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 07:38:26,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:26,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 07:38:26,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:27,017 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 [2021-11-07 07:38:27,047 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 [2021-11-07 07:38:27,058 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 [2021-11-07 07:38:27,125 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 [2021-11-07 07:38:27,130 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 [2021-11-07 07:38:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:27,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:38:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:27,480 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:38:27,481 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983989449] [2021-11-07 07:38:27,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983989449] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:27,481 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:27,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 07:38:27,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265869709] [2021-11-07 07:38:27,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 07:38:27,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:38:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 07:38:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-07 07:38:27,482 INFO L87 Difference]: Start difference. First operand 1126 states and 1373 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) [2021-11-07 07:38:35,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:35,985 INFO L93 Difference]: Finished difference Result 1125 states and 1372 transitions. [2021-11-07 07:38:35,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:38:35,986 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 [2021-11-07 07:38:35,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:35,992 INFO L225 Difference]: With dead ends: 1125 [2021-11-07 07:38:35,993 INFO L226 Difference]: Without dead ends: 1125 [2021-11-07 07:38:35,993 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 [2021-11-07 07:38:35,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2021-11-07 07:38:36,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2021-11-07 07:38:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 746 states have (on average 1.8109919571045576) internal successors, (1351), 1114 states have internal predecessors, (1351), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-07 07:38:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1372 transitions. [2021-11-07 07:38:36,014 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1372 transitions. Word has length 69 [2021-11-07 07:38:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:36,014 INFO L470 AbstractCegarLoop]: Abstraction has 1125 states and 1372 transitions. [2021-11-07 07:38:36,015 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) [2021-11-07 07:38:36,015 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1372 transitions. [2021-11-07 07:38:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-07 07:38:36,016 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:36,016 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 07:38:36,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-07 07:38:36,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:38:36,231 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:38:36,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:36,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1139648005, now seen corresponding path program 1 times [2021-11-07 07:38:36,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:38:36,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042913467] [2021-11-07 07:38:36,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:36,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:38:36,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:38:36,234 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:38:36,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 07:38:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:36,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 07:38:36,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:37,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:37,115 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:38:37,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:37,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:38:37,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042913467] [2021-11-07 07:38:37,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042913467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 07:38:37,327 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 07:38:37,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 07:38:37,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992969812] [2021-11-07 07:38:37,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 07:38:37,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:38:37,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 07:38:37,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 07:38:37,328 INFO L87 Difference]: Start difference. First operand 1125 states and 1372 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) [2021-11-07 07:38:37,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:37,451 INFO L93 Difference]: Finished difference Result 1135 states and 1385 transitions. [2021-11-07 07:38:37,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 07:38:37,452 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 [2021-11-07 07:38:37,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:37,462 INFO L225 Difference]: With dead ends: 1135 [2021-11-07 07:38:37,462 INFO L226 Difference]: Without dead ends: 1135 [2021-11-07 07:38:37,464 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 [2021-11-07 07:38:37,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2021-11-07 07:38:37,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 1135. [2021-11-07 07:38:37,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1135 states, 754 states have (on average 1.8076923076923077) internal successors, (1363), 1123 states have internal predecessors, (1363), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 07:38:37,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1135 states to 1135 states and 1385 transitions. [2021-11-07 07:38:37,493 INFO L78 Accepts]: Start accepts. Automaton has 1135 states and 1385 transitions. Word has length 77 [2021-11-07 07:38:37,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:37,494 INFO L470 AbstractCegarLoop]: Abstraction has 1135 states and 1385 transitions. [2021-11-07 07:38:37,494 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) [2021-11-07 07:38:37,494 INFO L276 IsEmpty]: Start isEmpty. Operand 1135 states and 1385 transitions. [2021-11-07 07:38:37,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 07:38:37,495 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:37,495 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] [2021-11-07 07:38:37,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:37,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:38:37,710 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:38:37,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:37,711 INFO L85 PathProgramCache]: Analyzing trace with hash 2077664763, now seen corresponding path program 1 times [2021-11-07 07:38:37,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:38:37,711 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811991707] [2021-11-07 07:38:37,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 07:38:37,712 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:38:37,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:38:37,713 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:38:37,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-07 07:38:38,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 07:38:38,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 07:38:38,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:38,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:38,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:38:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:38,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:38:38,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811991707] [2021-11-07 07:38:38,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811991707] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:38:38,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:38,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-07 07:38:38,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461922333] [2021-11-07 07:38:38,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 07:38:38,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:38:38,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 07:38:38,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-07 07:38:38,794 INFO L87 Difference]: Start difference. First operand 1135 states and 1385 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) [2021-11-07 07:38:39,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:39,207 INFO L93 Difference]: Finished difference Result 1149 states and 1403 transitions. [2021-11-07 07:38:39,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 07:38:39,208 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 [2021-11-07 07:38:39,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:39,213 INFO L225 Difference]: With dead ends: 1149 [2021-11-07 07:38:39,213 INFO L226 Difference]: Without dead ends: 1145 [2021-11-07 07:38:39,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:38:39,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1145 states. [2021-11-07 07:38:39,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1145 to 1141. [2021-11-07 07:38:39,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1141 states, 760 states have (on average 1.8039473684210525) internal successors, (1371), 1129 states have internal predecessors, (1371), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 07:38:39,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1141 states to 1141 states and 1393 transitions. [2021-11-07 07:38:39,232 INFO L78 Accepts]: Start accepts. Automaton has 1141 states and 1393 transitions. Word has length 79 [2021-11-07 07:38:39,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:39,232 INFO L470 AbstractCegarLoop]: Abstraction has 1141 states and 1393 transitions. [2021-11-07 07:38:39,232 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) [2021-11-07 07:38:39,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1141 states and 1393 transitions. [2021-11-07 07:38:39,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 07:38:39,233 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:39,234 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] [2021-11-07 07:38:39,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:39,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:38:39,447 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:38:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:39,448 INFO L85 PathProgramCache]: Analyzing trace with hash -931774981, now seen corresponding path program 2 times [2021-11-07 07:38:39,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:38:39,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286114339] [2021-11-07 07:38:39,449 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 07:38:39,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:38:39,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:38:39,450 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:38:39,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-07 07:38:40,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 07:38:40,265 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:40,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 07:38:40,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:40,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:38:41,153 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:41,153 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:38:41,154 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286114339] [2021-11-07 07:38:41,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286114339] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:38:41,154 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:41,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-07 07:38:41,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149959105] [2021-11-07 07:38:41,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-07 07:38:41,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:38:41,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-07 07:38:41,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-07 07:38:41,156 INFO L87 Difference]: Start difference. First operand 1141 states and 1393 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) [2021-11-07 07:38:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:42,592 INFO L93 Difference]: Finished difference Result 1169 states and 1431 transitions. [2021-11-07 07:38:42,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 07:38:42,592 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 [2021-11-07 07:38:42,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:42,598 INFO L225 Difference]: With dead ends: 1169 [2021-11-07 07:38:42,598 INFO L226 Difference]: Without dead ends: 1165 [2021-11-07 07:38:42,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 07:38:42,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-07 07:38:42,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1153. [2021-11-07 07:38:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 772 states have (on average 1.7966321243523315) internal successors, (1387), 1141 states have internal predecessors, (1387), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 07:38:42,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1409 transitions. [2021-11-07 07:38:42,616 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1409 transitions. Word has length 83 [2021-11-07 07:38:42,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:42,617 INFO L470 AbstractCegarLoop]: Abstraction has 1153 states and 1409 transitions. [2021-11-07 07:38:42,617 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) [2021-11-07 07:38:42,617 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1409 transitions. [2021-11-07 07:38:42,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 07:38:42,618 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:42,618 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] [2021-11-07 07:38:42,634 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-11-07 07:38:42,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:38:42,834 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:38:42,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:42,835 INFO L85 PathProgramCache]: Analyzing trace with hash -351179269, now seen corresponding path program 3 times [2021-11-07 07:38:42,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:38:42,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121160713] [2021-11-07 07:38:42,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 07:38:42,836 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:38:42,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:38:42,837 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:38:42,882 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-07 07:38:44,082 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-07 07:38:44,082 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:44,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-07 07:38:44,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:44,622 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:44,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:38:46,535 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:46,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:38:46,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121160713] [2021-11-07 07:38:46,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121160713] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:38:46,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:38:46,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-07 07:38:46,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61370798] [2021-11-07 07:38:46,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-07 07:38:46,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:38:46,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-07 07:38:46,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-07 07:38:46,539 INFO L87 Difference]: Start difference. First operand 1153 states and 1409 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) [2021-11-07 07:38:55,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:38:55,117 INFO L93 Difference]: Finished difference Result 1209 states and 1493 transitions. [2021-11-07 07:38:55,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-07 07:38:55,118 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 [2021-11-07 07:38:55,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:38:55,124 INFO L225 Difference]: With dead ends: 1209 [2021-11-07 07:38:55,125 INFO L226 Difference]: Without dead ends: 1203 [2021-11-07 07:38:55,126 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-07 07:38:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2021-11-07 07:38:55,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1177. [2021-11-07 07:38:55,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1177 states, 796 states have (on average 1.7814070351758795) internal successors, (1418), 1165 states have internal predecessors, (1418), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 07:38:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1440 transitions. [2021-11-07 07:38:55,148 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1440 transitions. Word has length 91 [2021-11-07 07:38:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:38:55,149 INFO L470 AbstractCegarLoop]: Abstraction has 1177 states and 1440 transitions. [2021-11-07 07:38:55,149 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) [2021-11-07 07:38:55,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1440 transitions. [2021-11-07 07:38:55,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 07:38:55,150 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:38:55,151 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] [2021-11-07 07:38:55,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-07 07:38:55,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:38:55,369 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:38:55,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:38:55,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2109197819, now seen corresponding path program 4 times [2021-11-07 07:38:55,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:38:55,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533530011] [2021-11-07 07:38:55,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-07 07:38:55,370 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:38:55,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:38:55,371 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:38:55,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-07 07:38:56,098 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-07 07:38:56,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:38:56,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 07:38:56,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:38:57,363 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:38:57,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 07:39:01,383 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 07:39:01,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 07:39:01,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533530011] [2021-11-07 07:39:01,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533530011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 07:39:01,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 07:39:01,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 07:39:01,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789173245] [2021-11-07 07:39:01,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 07:39:01,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 07:39:01,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 07:39:01,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 07:39:01,387 INFO L87 Difference]: Start difference. First operand 1177 states and 1440 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) [2021-11-07 07:39:15,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 07:39:15,842 INFO L93 Difference]: Finished difference Result 1269 states and 1560 transitions. [2021-11-07 07:39:15,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-07 07:39:15,844 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 [2021-11-07 07:39:15,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 07:39:15,851 INFO L225 Difference]: With dead ends: 1269 [2021-11-07 07:39:15,851 INFO L226 Difference]: Without dead ends: 1265 [2021-11-07 07:39:15,858 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-07 07:39:15,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2021-11-07 07:39:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1207. [2021-11-07 07:39:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1207 states, 826 states have (on average 1.7723970944309928) internal successors, (1464), 1195 states have internal predecessors, (1464), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 6 states have call predecessors, (11), 10 states have call successors, (11) [2021-11-07 07:39:15,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1207 states to 1207 states and 1486 transitions. [2021-11-07 07:39:15,889 INFO L78 Accepts]: Start accepts. Automaton has 1207 states and 1486 transitions. Word has length 107 [2021-11-07 07:39:15,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 07:39:15,890 INFO L470 AbstractCegarLoop]: Abstraction has 1207 states and 1486 transitions. [2021-11-07 07:39:15,890 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) [2021-11-07 07:39:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 1207 states and 1486 transitions. [2021-11-07 07:39:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 07:39:15,891 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 07:39:15,891 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] [2021-11-07 07:39:15,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-07 07:39:16,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 07:39:16,120 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 530 more)] === [2021-11-07 07:39:16,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 07:39:16,120 INFO L85 PathProgramCache]: Analyzing trace with hash -736370181, now seen corresponding path program 5 times [2021-11-07 07:39:16,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 07:39:16,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [276526552] [2021-11-07 07:39:16,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 07:39:16,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 07:39:16,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 07:39:16,122 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 07:39:16,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11ef5ca7-5468-4059-82ee-bfa836ffeded/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-07 07:39:17,855 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-07 07:39:17,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 07:39:17,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-07 07:39:17,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 07:39:17,908 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 [2021-11-07 07:39:18,158 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-07 07:39:18,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-07 07:39:18,202 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 [2021-11-07 07:39:18,360 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 [2021-11-07 07:51:02,343 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 81