./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:58:44,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:58:44,536 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:58:44,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:58:44,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:58:44,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:58:44,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:58:44,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:58:44,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:58:44,614 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:58:44,615 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:58:44,617 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:58:44,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:58:44,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:58:44,623 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:58:44,629 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:58:44,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:58:44,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:58:44,639 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:58:44,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:58:44,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:58:44,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:58:44,654 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:58:44,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:58:44,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:58:44,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:58:44,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:58:44,665 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:58:44,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:58:44,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:58:44,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:58:44,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:58:44,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:58:44,673 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:58:44,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:58:44,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:58:44,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:58:44,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:58:44,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:58:44,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:58:44,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:58:44,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:58:44,726 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:58:44,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:58:44,727 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:58:44,728 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:58:44,735 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:58:44,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:58:44,736 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:58:44,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:58:44,737 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:58:44,737 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:58:44,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:58:44,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:58:44,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:58:44,739 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:58:44,739 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:58:44,739 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:58:44,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:58:44,740 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:58:44,740 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:58:44,740 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:58:44,740 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:58:44,741 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:58:44,741 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:58:44,741 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:44,741 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:58:44,742 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:58:44,742 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:58:44,742 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:58:44,742 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:58:44,744 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-11-09 08:58:45,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:58:45,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:58:45,055 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:58:45,057 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:58:45,058 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:58:45,059 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-09 08:58:45,135 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/1df906d06/fee58edcbf1b446095a83fc7ee3af6a2/FLAG4518d82b7 [2021-11-09 08:58:45,754 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:58:45,755 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-09 08:58:45,778 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/1df906d06/fee58edcbf1b446095a83fc7ee3af6a2/FLAG4518d82b7 [2021-11-09 08:58:46,004 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/1df906d06/fee58edcbf1b446095a83fc7ee3af6a2 [2021-11-09 08:58:46,007 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:46,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:58:46,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:46,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:46,014 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:46,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:46" (1/1) ... [2021-11-09 08:58:46,017 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@705413aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:46, skipping insertion in model container [2021-11-09 08:58:46,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:46" (1/1) ... [2021-11-09 08:58:46,025 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:46,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:46,561 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-09 08:58:46,700 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-09 08:58:46,701 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-09 08:58:46,710 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:46,720 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-09 08:58:46,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@66e7692d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:46, skipping insertion in model container [2021-11-09 08:58:46,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:46,721 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 08:58:46,723 INFO L168 Benchmark]: Toolchain (without parser) took 714.22 ms. Allocated memory is still 117.4 MB. Free memory was 74.2 MB in the beginning and 82.4 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:46,724 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 93.3 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:58:46,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 711.34 ms. Allocated memory is still 117.4 MB. Free memory was 74.0 MB in the beginning and 82.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:58:46,727 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 117.4 MB. Free memory was 93.4 MB in the beginning and 93.3 MB in the end (delta: 62.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 711.34 ms. Allocated memory is still 117.4 MB. Free memory was 74.0 MB in the beginning and 82.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 716]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:58:49,099 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:58:49,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:58:49,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:58:49,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:58:49,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:58:49,146 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:58:49,148 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:58:49,151 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:58:49,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:58:49,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:58:49,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:58:49,155 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:58:49,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:58:49,158 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:58:49,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:58:49,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:58:49,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:58:49,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:58:49,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:58:49,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:58:49,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:58:49,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:58:49,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:58:49,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:58:49,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:58:49,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:58:49,201 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:58:49,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:58:49,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:58:49,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:58:49,204 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:58:49,205 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:58:49,206 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:58:49,208 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:58:49,208 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:58:49,209 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:58:49,209 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:58:49,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:58:49,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:58:49,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:58:49,212 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 08:58:49,238 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:58:49,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:58:49,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:58:49,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:58:49,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:58:49,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:58:49,240 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:58:49,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:58:49,240 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:58:49,241 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:58:49,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:58:49,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:58:49,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:58:49,241 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:58:49,241 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:58:49,242 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:58:49,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:58:49,242 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:58:49,242 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:58:49,242 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:58:49,243 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:58:49,243 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:58:49,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:58:49,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:58:49,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:58:49,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:49,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:58:49,244 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:58:49,244 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:58:49,244 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:58:49,245 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:58:49,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:58:49,245 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d4f4fa5c64db6e2d1986e03259021eba4df8a22df3a334e78927feece513264 [2021-11-09 08:58:49,651 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:58:49,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:58:49,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:58:49,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:58:49,693 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:58:49,694 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-09 08:58:49,765 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/b5b674824/86b5a045cf76472aa705cbe385ead781/FLAGf5a593895 [2021-11-09 08:58:50,488 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:58:50,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i [2021-11-09 08:58:50,506 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/b5b674824/86b5a045cf76472aa705cbe385ead781/FLAGf5a593895 [2021-11-09 08:58:50,646 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/data/b5b674824/86b5a045cf76472aa705cbe385ead781 [2021-11-09 08:58:50,649 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:58:50,651 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:58:50,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:50,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:58:50,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:58:50,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:50" (1/1) ... [2021-11-09 08:58:50,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb3a343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:50, skipping insertion in model container [2021-11-09 08:58:50,660 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:58:50" (1/1) ... [2021-11-09 08:58:50,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:58:50,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:51,230 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-09 08:58:51,345 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-09 08:58:51,346 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-09 08:58:51,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:51,367 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 08:58:51,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:58:51,417 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-09 08:58:51,562 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-09 08:58:51,563 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-09 08:58:51,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:51,572 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:58:51,604 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[33021,33034] [2021-11-09 08:58:51,659 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44124,44137] [2021-11-09 08:58:51,660 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_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test7-1.i[44245,44258] [2021-11-09 08:58:51,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:58:51,738 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:58:51,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51 WrapperNode [2021-11-09 08:58:51,739 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:58:51,741 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:58:51,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:58:51,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:58:51,754 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:51,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:51,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:51,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:51,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:51,966 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:51,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:52,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:58:52,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:58:52,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:58:52,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:58:52,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (1/1) ... [2021-11-09 08:58:52,019 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:58:52,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:58:52,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:58:52,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:58:52,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:58:52,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:58:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:58:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 08:58:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 08:58:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 08:58:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 08:58:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 08:58:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:58:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 08:58:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:58:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 08:58:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 08:58:52,094 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 08:58:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 08:58:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 08:58:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 08:58:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 08:58:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 08:58:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 08:58:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 08:58:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 08:58:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 08:58:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 08:58:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 08:58:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 08:58:52,096 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 08:58:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 08:58:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 08:58:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 08:58:52,097 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 08:58:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 08:58:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 08:58:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 08:58:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 08:58:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 08:58:52,099 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 08:58:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 08:58:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 08:58:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 08:58:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 08:58:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 08:58:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 08:58:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 08:58:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 08:58:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 08:58:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 08:58:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 08:58:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 08:58:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 08:58:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 08:58:52,102 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 08:58:52,103 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 08:58:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 08:58:52,104 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 08:58:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 08:58:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 08:58:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 08:58:52,105 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 08:58:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 08:58:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 08:58:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 08:58:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 08:58:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:58:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:58:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:58:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:58:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:58:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:58:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:58:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:58:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:58:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:58:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:58:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:58:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:58:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:58:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:58:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:58:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 08:58:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 08:58:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 08:58:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 08:58:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 08:58:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:58:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:58:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:58:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:58:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:58:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:58:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:58:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:58:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:58:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:58:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:58:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:58:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:58:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:58:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:58:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:58:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:58:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:58:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:58:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:58:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:58:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:58:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:58:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:58:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:58:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:58:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:58:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:58:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:58:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:58:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:58:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:58:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:58:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:58:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:58:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:58:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:58:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:58:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:58:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:58:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:58:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:58:52,130 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:58:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:58:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:58:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:58:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:58:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:58:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:58:52,131 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:58:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:58:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:58:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:58:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:58:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:58:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:58:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:58:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:58:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:58:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:58:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:58:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:58:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:58:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:58:52,134 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:58:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:58:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:58:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:58:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:58:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:58:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:58:52,135 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:58:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:58:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:58:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:58:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:58:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:58:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:58:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:58:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:58:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:58:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:58:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:58:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:58:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 08:58:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:58:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:58:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 08:58:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 08:58:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 08:58:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:58:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:58:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 08:58:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:58:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:58:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:58:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:58:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:58:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 08:58:52,667 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 08:58:57,764 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:58:57,765 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-09 08:58:57,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:57 BoogieIcfgContainer [2021-11-09 08:58:57,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:58:57,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:58:57,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:58:57,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:58:57,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:58:50" (1/3) ... [2021-11-09 08:58:57,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be17320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:57, skipping insertion in model container [2021-11-09 08:58:57,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:58:51" (2/3) ... [2021-11-09 08:58:57,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3be17320 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:58:57, skipping insertion in model container [2021-11-09 08:58:57,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:58:57" (3/3) ... [2021-11-09 08:58:57,776 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_BER_test7-1.i [2021-11-09 08:58:57,782 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:58:57,782 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 531 error locations. [2021-11-09 08:58:57,828 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:58:57,835 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-09 08:58:57,835 INFO L340 AbstractCegarLoop]: Starting to check reachability of 531 error locations. [2021-11-09 08:58:57,882 INFO L276 IsEmpty]: Start isEmpty. Operand has 1055 states, 519 states have (on average 2.2524084778420037) internal successors, (1169), 1046 states have internal predecessors, (1169), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-09 08:58:57,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:58:57,890 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:58:57,891 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:58:57,891 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:58:57,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:58:57,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1952023556, now seen corresponding path program 1 times [2021-11-09 08:58:57,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:58:57,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780323812] [2021-11-09 08:58:57,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:58:57,911 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:58:57,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:58:57,916 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:58:57,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:58:58,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:58:58,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:58:58,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:58:58,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:58:58,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:58,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:58:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:58:58,324 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:58:58,324 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780323812] [2021-11-09 08:58:58,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780323812] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:58:58,325 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:58:58,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:58:58,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044425677] [2021-11-09 08:58:58,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:58:58,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:58:58,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:58:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:58:58,351 INFO L87 Difference]: Start difference. First operand has 1055 states, 519 states have (on average 2.2524084778420037) internal successors, (1169), 1046 states have internal predecessors, (1169), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:00,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:00,299 INFO L93 Difference]: Finished difference Result 1046 states and 1101 transitions. [2021-11-09 08:59:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:00,313 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:59:00,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:00,335 INFO L225 Difference]: With dead ends: 1046 [2021-11-09 08:59:00,336 INFO L226 Difference]: Without dead ends: 1043 [2021-11-09 08:59:00,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:00,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-11-09 08:59:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1035. [2021-11-09 08:59:00,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1035 states, 517 states have (on average 2.09284332688588) internal successors, (1082), 1027 states have internal predecessors, (1082), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:00,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1035 states to 1035 states and 1091 transitions. [2021-11-09 08:59:00,443 INFO L78 Accepts]: Start accepts. Automaton has 1035 states and 1091 transitions. Word has length 7 [2021-11-09 08:59:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:00,443 INFO L470 AbstractCegarLoop]: Abstraction has 1035 states and 1091 transitions. [2021-11-09 08:59:00,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 1035 states and 1091 transitions. [2021-11-09 08:59:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:59:00,444 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:00,444 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:00,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:00,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:00,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:00,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:00,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1952023557, now seen corresponding path program 1 times [2021-11-09 08:59:00,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:00,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [254274052] [2021-11-09 08:59:00,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:00,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:00,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:00,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:00,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:59:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:00,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:00,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:00,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:00,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:00,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:00,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:00,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:00,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [254274052] [2021-11-09 08:59:00,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [254274052] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:00,943 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:00,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:59:00,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526491985] [2021-11-09 08:59:00,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:00,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:00,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:00,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:00,947 INFO L87 Difference]: Start difference. First operand 1035 states and 1091 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:06,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:06,517 INFO L93 Difference]: Finished difference Result 1500 states and 1588 transitions. [2021-11-09 08:59:06,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:06,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 7 [2021-11-09 08:59:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:06,527 INFO L225 Difference]: With dead ends: 1500 [2021-11-09 08:59:06,527 INFO L226 Difference]: Without dead ends: 1500 [2021-11-09 08:59:06,529 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:06,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2021-11-09 08:59:06,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1070. [2021-11-09 08:59:06,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 561 states have (on average 2.06951871657754) internal successors, (1161), 1062 states have internal predecessors, (1161), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:06,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1170 transitions. [2021-11-09 08:59:06,575 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1170 transitions. Word has length 7 [2021-11-09 08:59:06,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:06,576 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1170 transitions. [2021-11-09 08:59:06,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:06,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1170 transitions. [2021-11-09 08:59:06,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:59:06,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:06,577 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:06,592 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-09 08:59:06,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:06,788 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:06,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:06,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1548729403, now seen corresponding path program 1 times [2021-11-09 08:59:06,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:06,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766765929] [2021-11-09 08:59:06,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:06,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:06,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:06,791 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:06,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:59:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:07,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:59:07,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:07,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:07,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:07,056 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:07,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:07,092 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:07,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766765929] [2021-11-09 08:59:07,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766765929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:07,093 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:07,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:59:07,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140438139] [2021-11-09 08:59:07,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:59:07,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:07,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:59:07,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:07,095 INFO L87 Difference]: Start difference. First operand 1070 states and 1170 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:09,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:09,163 INFO L93 Difference]: Finished difference Result 1400 states and 1525 transitions. [2021-11-09 08:59:09,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:09,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 08:59:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:09,173 INFO L225 Difference]: With dead ends: 1400 [2021-11-09 08:59:09,173 INFO L226 Difference]: Without dead ends: 1400 [2021-11-09 08:59:09,173 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:59:09,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2021-11-09 08:59:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1023. [2021-11-09 08:59:09,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 561 states have (on average 1.9803921568627452) internal successors, (1111), 1015 states have internal predecessors, (1111), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:09,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1120 transitions. [2021-11-09 08:59:09,206 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1120 transitions. Word has length 12 [2021-11-09 08:59:09,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:09,207 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1120 transitions. [2021-11-09 08:59:09,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:09,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1120 transitions. [2021-11-09 08:59:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:59:09,208 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:09,208 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:09,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:09,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:09,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:09,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:09,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1548729402, now seen corresponding path program 1 times [2021-11-09 08:59:09,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:09,417 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445960807] [2021-11-09 08:59:09,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:09,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:09,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:09,419 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:09,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:59:09,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:09,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:09,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:09,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:09,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:09,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:09,817 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:09,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445960807] [2021-11-09 08:59:09,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445960807] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:09,818 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:09,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:59:09,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339205753] [2021-11-09 08:59:09,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:09,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:09,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:09,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:09,821 INFO L87 Difference]: Start difference. First operand 1023 states and 1120 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:14,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:14,535 INFO L93 Difference]: Finished difference Result 1444 states and 1533 transitions. [2021-11-09 08:59:14,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:14,536 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-09 08:59:14,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:14,544 INFO L225 Difference]: With dead ends: 1444 [2021-11-09 08:59:14,544 INFO L226 Difference]: Without dead ends: 1444 [2021-11-09 08:59:14,545 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:14,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-11-09 08:59:14,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1013. [2021-11-09 08:59:14,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1013 states, 561 states have (on average 1.9572192513368984) internal successors, (1098), 1005 states have internal predecessors, (1098), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1107 transitions. [2021-11-09 08:59:14,575 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1107 transitions. Word has length 12 [2021-11-09 08:59:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:14,576 INFO L470 AbstractCegarLoop]: Abstraction has 1013 states and 1107 transitions. [2021-11-09 08:59:14,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:14,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1107 transitions. [2021-11-09 08:59:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:59:14,577 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:14,577 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:14,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:14,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:14,789 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr526ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1839245231, now seen corresponding path program 1 times [2021-11-09 08:59:14,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:14,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1789194040] [2021-11-09 08:59:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:14,790 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:14,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:14,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:14,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:59:14,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:14,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:59:14,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:15,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:15,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:15,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1789194040] [2021-11-09 08:59:15,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1789194040] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:15,184 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:15,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:59:15,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426707361] [2021-11-09 08:59:15,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:15,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:15,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:15,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:15,186 INFO L87 Difference]: Start difference. First operand 1013 states and 1107 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:16,021 INFO L93 Difference]: Finished difference Result 1460 states and 1586 transitions. [2021-11-09 08:59:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:59:16,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 08:59:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:16,030 INFO L225 Difference]: With dead ends: 1460 [2021-11-09 08:59:16,031 INFO L226 Difference]: Without dead ends: 1460 [2021-11-09 08:59:16,031 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:59:16,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1460 states. [2021-11-09 08:59:16,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1460 to 1250. [2021-11-09 08:59:16,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 798 states have (on average 1.9411027568922306) internal successors, (1549), 1242 states have internal predecessors, (1549), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:16,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1558 transitions. [2021-11-09 08:59:16,071 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1558 transitions. Word has length 15 [2021-11-09 08:59:16,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:16,072 INFO L470 AbstractCegarLoop]: Abstraction has 1250 states and 1558 transitions. [2021-11-09 08:59:16,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:16,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1558 transitions. [2021-11-09 08:59:16,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-09 08:59:16,073 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:16,074 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:16,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:16,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:16,285 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr529ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:16,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1182027384, now seen corresponding path program 1 times [2021-11-09 08:59:16,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:16,288 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1759439666] [2021-11-09 08:59:16,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:16,288 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:16,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:16,290 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:16,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:59:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:16,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:16,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:16,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:59:16,613 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:59:16,614 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:59:16,676 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-09 08:59:16,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-09 08:59:16,746 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-09 08:59:16,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-09 08:59:16,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:16,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:16,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:16,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:16,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1759439666] [2021-11-09 08:59:16,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1759439666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:16,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:16,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:59:16,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556634807] [2021-11-09 08:59:16,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:59:16,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:16,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:59:16,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:59:16,862 INFO L87 Difference]: Start difference. First operand 1250 states and 1558 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:18,365 INFO L93 Difference]: Finished difference Result 1606 states and 1973 transitions. [2021-11-09 08:59:18,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:18,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-09 08:59:18,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:18,375 INFO L225 Difference]: With dead ends: 1606 [2021-11-09 08:59:18,375 INFO L226 Difference]: Without dead ends: 1606 [2021-11-09 08:59:18,375 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:59:18,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2021-11-09 08:59:18,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1249. [2021-11-09 08:59:18,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1249 states, 797 states have (on average 1.9410288582183186) internal successors, (1547), 1241 states have internal predecessors, (1547), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1249 states to 1249 states and 1556 transitions. [2021-11-09 08:59:18,410 INFO L78 Accepts]: Start accepts. Automaton has 1249 states and 1556 transitions. Word has length 16 [2021-11-09 08:59:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:18,411 INFO L470 AbstractCegarLoop]: Abstraction has 1249 states and 1556 transitions. [2021-11-09 08:59:18,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:18,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1249 states and 1556 transitions. [2021-11-09 08:59:18,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 08:59:18,412 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:18,412 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:18,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-11-09 08:59:18,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:18,627 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash 109421681, now seen corresponding path program 1 times [2021-11-09 08:59:18,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:18,628 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462520397] [2021-11-09 08:59:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:18,628 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:18,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:18,629 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:18,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 08:59:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:18,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:59:18,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:18,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:18,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:18,975 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:18,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462520397] [2021-11-09 08:59:18,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462520397] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:18,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:18,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:59:18,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329080164] [2021-11-09 08:59:18,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:18,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:18,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:18,984 INFO L87 Difference]: Start difference. First operand 1249 states and 1556 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:19,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:19,016 INFO L93 Difference]: Finished difference Result 1189 states and 1470 transitions. [2021-11-09 08:59:19,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:59:19,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-09 08:59:19,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:19,022 INFO L225 Difference]: With dead ends: 1189 [2021-11-09 08:59:19,022 INFO L226 Difference]: Without dead ends: 1189 [2021-11-09 08:59:19,022 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2021-11-09 08:59:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1189. [2021-11-09 08:59:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1189 states, 761 states have (on average 1.9198423127463864) internal successors, (1461), 1181 states have internal predecessors, (1461), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1189 states to 1189 states and 1470 transitions. [2021-11-09 08:59:19,046 INFO L78 Accepts]: Start accepts. Automaton has 1189 states and 1470 transitions. Word has length 22 [2021-11-09 08:59:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:19,047 INFO L470 AbstractCegarLoop]: Abstraction has 1189 states and 1470 transitions. [2021-11-09 08:59:19,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1189 states and 1470 transitions. [2021-11-09 08:59:19,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:59:19,048 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:19,048 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:19,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:19,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:19,262 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:19,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:19,263 INFO L85 PathProgramCache]: Analyzing trace with hash 2075018155, now seen corresponding path program 1 times [2021-11-09 08:59:19,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:19,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455194933] [2021-11-09 08:59:19,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:19,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:19,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:19,267 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:19,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 08:59:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:19,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:19,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:19,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:19,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:19,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:19,727 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:19,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455194933] [2021-11-09 08:59:19,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455194933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:19,728 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:19,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 08:59:19,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732846173] [2021-11-09 08:59:19,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:59:19,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:59:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:59:19,730 INFO L87 Difference]: Start difference. First operand 1189 states and 1470 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:19,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:19,815 INFO L93 Difference]: Finished difference Result 1161 states and 1414 transitions. [2021-11-09 08:59:19,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:19,816 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-09 08:59:19,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:19,823 INFO L225 Difference]: With dead ends: 1161 [2021-11-09 08:59:19,823 INFO L226 Difference]: Without dead ends: 1161 [2021-11-09 08:59:19,823 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:59:19,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1161 states. [2021-11-09 08:59:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1161 to 1159. [2021-11-09 08:59:19,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 745 states have (on average 1.8832214765100672) internal successors, (1403), 1151 states have internal predecessors, (1403), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:19,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1412 transitions. [2021-11-09 08:59:19,851 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1412 transitions. Word has length 24 [2021-11-09 08:59:19,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:19,851 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1412 transitions. [2021-11-09 08:59:19,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:19,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1412 transitions. [2021-11-09 08:59:19,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:59:19,853 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:19,853 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:19,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:20,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:20,066 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:20,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:20,066 INFO L85 PathProgramCache]: Analyzing trace with hash 755457081, now seen corresponding path program 1 times [2021-11-09 08:59:20,067 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:20,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967707304] [2021-11-09 08:59:20,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:20,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:20,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:20,070 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:20,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 08:59:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:20,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:20,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:20,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:20,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:20,662 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:20,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967707304] [2021-11-09 08:59:20,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967707304] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:20,663 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:20,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:59:20,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655392075] [2021-11-09 08:59:20,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:20,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:20,665 INFO L87 Difference]: Start difference. First operand 1159 states and 1412 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:23,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:23,018 INFO L93 Difference]: Finished difference Result 1622 states and 1995 transitions. [2021-11-09 08:59:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:59:23,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 08:59:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:23,027 INFO L225 Difference]: With dead ends: 1622 [2021-11-09 08:59:23,027 INFO L226 Difference]: Without dead ends: 1622 [2021-11-09 08:59:23,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:59:23,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1622 states. [2021-11-09 08:59:23,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1622 to 1155. [2021-11-09 08:59:23,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 745 states have (on average 1.8724832214765101) internal successors, (1395), 1147 states have internal predecessors, (1395), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:23,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1404 transitions. [2021-11-09 08:59:23,056 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1404 transitions. Word has length 38 [2021-11-09 08:59:23,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:23,056 INFO L470 AbstractCegarLoop]: Abstraction has 1155 states and 1404 transitions. [2021-11-09 08:59:23,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:23,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1404 transitions. [2021-11-09 08:59:23,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:59:23,058 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:23,058 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:23,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:23,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:23,271 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:23,271 INFO L85 PathProgramCache]: Analyzing trace with hash 755457082, now seen corresponding path program 1 times [2021-11-09 08:59:23,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:23,272 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [306627783] [2021-11-09 08:59:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:23,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:23,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:23,282 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:23,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 08:59:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:23,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:59:23,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:23,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:23,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:24,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:24,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [306627783] [2021-11-09 08:59:24,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [306627783] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:24,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:24,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:59:24,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002775264] [2021-11-09 08:59:24,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:59:24,405 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:24,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:59:24,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:59:24,406 INFO L87 Difference]: Start difference. First operand 1155 states and 1404 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:30,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:30,365 INFO L93 Difference]: Finished difference Result 1755 states and 2150 transitions. [2021-11-09 08:59:30,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:59:30,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-09 08:59:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:30,373 INFO L225 Difference]: With dead ends: 1755 [2021-11-09 08:59:30,373 INFO L226 Difference]: Without dead ends: 1755 [2021-11-09 08:59:30,373 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:59:30,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-09 08:59:30,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 1151. [2021-11-09 08:59:30,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 745 states have (on average 1.861744966442953) internal successors, (1387), 1143 states have internal predecessors, (1387), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:30,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1396 transitions. [2021-11-09 08:59:30,399 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1396 transitions. Word has length 38 [2021-11-09 08:59:30,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:30,399 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1396 transitions. [2021-11-09 08:59:30,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:30,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1396 transitions. [2021-11-09 08:59:30,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 08:59:30,402 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:30,402 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:30,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-11-09 08:59:30,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:30,633 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash -81906696, now seen corresponding path program 1 times [2021-11-09 08:59:30,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:30,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [314515964] [2021-11-09 08:59:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:30,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:30,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:30,637 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:30,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 08:59:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:30,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:59:30,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:31,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:31,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:31,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:31,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:31,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [314515964] [2021-11-09 08:59:31,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [314515964] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:31,296 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:31,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:59:31,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892012980] [2021-11-09 08:59:31,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:59:31,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:31,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:59:31,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:59:31,298 INFO L87 Difference]: Start difference. First operand 1151 states and 1396 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:31,350 INFO L93 Difference]: Finished difference Result 1139 states and 1376 transitions. [2021-11-09 08:59:31,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:59:31,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-09 08:59:31,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:31,359 INFO L225 Difference]: With dead ends: 1139 [2021-11-09 08:59:31,359 INFO L226 Difference]: Without dead ends: 1139 [2021-11-09 08:59:31,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:59:31,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-09 08:59:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1139. [2021-11-09 08:59:31,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 733 states have (on average 1.86493860845839) internal successors, (1367), 1131 states have internal predecessors, (1367), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:31,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1376 transitions. [2021-11-09 08:59:31,383 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1376 transitions. Word has length 56 [2021-11-09 08:59:31,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:31,383 INFO L470 AbstractCegarLoop]: Abstraction has 1139 states and 1376 transitions. [2021-11-09 08:59:31,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1376 transitions. [2021-11-09 08:59:31,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:59:31,389 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:31,389 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:31,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:59:31,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:31,609 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:31,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:31,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1472971204, now seen corresponding path program 1 times [2021-11-09 08:59:31,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:31,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1932944434] [2021-11-09 08:59:31,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:31,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:31,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:31,611 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:31,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 08:59:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:32,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:59:32,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:32,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:32,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:32,941 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 08:59:32,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-09 08:59:32,966 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 08:59:32,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-09 08:59:33,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:33,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:38,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:38,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:38,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1932944434] [2021-11-09 08:59:38,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1932944434] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:38,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:38,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:59:38,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143822909] [2021-11-09 08:59:38,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:59:38,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:38,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:59:38,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 08:59:38,075 INFO L87 Difference]: Start difference. First operand 1139 states and 1376 transitions. Second operand has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:55,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:59:55,903 INFO L93 Difference]: Finished difference Result 2090 states and 2635 transitions. [2021-11-09 08:59:55,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:59:55,906 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2021-11-09 08:59:55,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:59:55,914 INFO L225 Difference]: With dead ends: 2090 [2021-11-09 08:59:55,914 INFO L226 Difference]: Without dead ends: 2090 [2021-11-09 08:59:55,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 08:59:55,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2021-11-09 08:59:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1101. [2021-11-09 08:59:55,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 733 states have (on average 1.8130968622100956) internal successors, (1329), 1093 states have internal predecessors, (1329), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 08:59:55,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1338 transitions. [2021-11-09 08:59:55,940 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1338 transitions. Word has length 64 [2021-11-09 08:59:55,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:59:55,941 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1338 transitions. [2021-11-09 08:59:55,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 23.4) internal successors, (117), 6 states have internal predecessors, (117), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:59:55,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1338 transitions. [2021-11-09 08:59:55,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:59:55,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:59:55,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:59:55,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-09 08:59:56,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:59:56,157 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 08:59:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:59:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2063415711, now seen corresponding path program 1 times [2021-11-09 08:59:56,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:59:56,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658783973] [2021-11-09 08:59:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:59:56,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:59:56,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:59:56,159 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:59:56,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 08:59:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:59:56,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:59:56,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:59:56,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:59:56,797 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-09 08:59:56,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-09 08:59:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:56,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:59:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:59:57,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:59:57,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658783973] [2021-11-09 08:59:57,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658783973] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:59:57,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:59:57,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:59:57,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75892470] [2021-11-09 08:59:57,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:59:57,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:59:57,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:59:57,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:59:57,005 INFO L87 Difference]: Start difference. First operand 1101 states and 1338 transitions. Second operand has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:00:00,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:00,163 INFO L93 Difference]: Finished difference Result 1100 states and 1337 transitions. [2021-11-09 09:00:00,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:00:00,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 09:00:00,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:00,168 INFO L225 Difference]: With dead ends: 1100 [2021-11-09 09:00:00,168 INFO L226 Difference]: Without dead ends: 1100 [2021-11-09 09:00:00,169 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 09:00:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1100 states. [2021-11-09 09:00:00,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1100 to 1100. [2021-11-09 09:00:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1100 states, 733 states have (on average 1.8117326057298773) internal successors, (1328), 1092 states have internal predecessors, (1328), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:00:00,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1100 states to 1100 states and 1337 transitions. [2021-11-09 09:00:00,187 INFO L78 Accepts]: Start accepts. Automaton has 1100 states and 1337 transitions. Word has length 69 [2021-11-09 09:00:00,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:00,187 INFO L470 AbstractCegarLoop]: Abstraction has 1100 states and 1337 transitions. [2021-11-09 09:00:00,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:00:00,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1100 states and 1337 transitions. [2021-11-09 09:00:00,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 09:00:00,189 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:00,189 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:00,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:00,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:00,404 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:00:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash -2063415710, now seen corresponding path program 1 times [2021-11-09 09:00:00,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:00,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945144362] [2021-11-09 09:00:00,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:00:00,405 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:00,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:00,406 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:00,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 09:00:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:00:00,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 09:00:00,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:01,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:00:01,045 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-09 09:00:01,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-09 09:00:01,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-09 09:00:01,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-09 09:00:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:01,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:01,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:01,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:01,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945144362] [2021-11-09 09:00:01,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945144362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:00:01,517 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:00:01,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 09:00:01,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911914690] [2021-11-09 09:00:01,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 09:00:01,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:01,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 09:00:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:00:01,519 INFO L87 Difference]: Start difference. First operand 1100 states and 1337 transitions. Second operand has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:00:12,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:12,074 INFO L93 Difference]: Finished difference Result 1099 states and 1336 transitions. [2021-11-09 09:00:12,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:00:12,076 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-09 09:00:12,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:12,081 INFO L225 Difference]: With dead ends: 1099 [2021-11-09 09:00:12,081 INFO L226 Difference]: Without dead ends: 1099 [2021-11-09 09:00:12,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:00:12,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2021-11-09 09:00:12,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1099. [2021-11-09 09:00:12,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1099 states, 732 states have (on average 1.8128415300546448) internal successors, (1327), 1091 states have internal predecessors, (1327), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-09 09:00:12,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1099 states to 1099 states and 1336 transitions. [2021-11-09 09:00:12,101 INFO L78 Accepts]: Start accepts. Automaton has 1099 states and 1336 transitions. Word has length 69 [2021-11-09 09:00:12,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:12,102 INFO L470 AbstractCegarLoop]: Abstraction has 1099 states and 1336 transitions. [2021-11-09 09:00:12,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.428571428571429) internal successors, (73), 8 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 09:00:12,102 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states and 1336 transitions. [2021-11-09 09:00:12,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 09:00:12,103 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:12,103 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:12,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:12,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:12,315 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:00:12,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:12,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1040597000, now seen corresponding path program 1 times [2021-11-09 09:00:12,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:12,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697191198] [2021-11-09 09:00:12,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:00:12,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:12,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:12,318 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:12,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 09:00:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:00:12,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 09:00:12,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:13,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:13,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:13,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:13,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697191198] [2021-11-09 09:00:13,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697191198] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 09:00:13,230 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:00:13,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 09:00:13,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877304005] [2021-11-09 09:00:13,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 09:00:13,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:13,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 09:00:13,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 09:00:13,232 INFO L87 Difference]: Start difference. First operand 1099 states and 1336 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:13,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:13,352 INFO L93 Difference]: Finished difference Result 1109 states and 1349 transitions. [2021-11-09 09:00:13,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 09:00:13,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 77 [2021-11-09 09:00:13,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:13,361 INFO L225 Difference]: With dead ends: 1109 [2021-11-09 09:00:13,361 INFO L226 Difference]: Without dead ends: 1109 [2021-11-09 09:00:13,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-09 09:00:13,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1109 states. [2021-11-09 09:00:13,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1109 to 1109. [2021-11-09 09:00:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1109 states, 740 states have (on average 1.8094594594594595) internal successors, (1339), 1100 states have internal predecessors, (1339), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:00:13,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1349 transitions. [2021-11-09 09:00:13,386 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1349 transitions. Word has length 77 [2021-11-09 09:00:13,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:13,387 INFO L470 AbstractCegarLoop]: Abstraction has 1109 states and 1349 transitions. [2021-11-09 09:00:13,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:13,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1349 transitions. [2021-11-09 09:00:13,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 09:00:13,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:13,389 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:13,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:13,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:13,602 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:00:13,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:13,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1778063432, now seen corresponding path program 1 times [2021-11-09 09:00:13,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:13,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1163549208] [2021-11-09 09:00:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:00:13,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:13,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:13,606 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:13,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 09:00:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:00:14,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 09:00:14,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:14,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:14,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:14,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:14,764 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:14,764 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1163549208] [2021-11-09 09:00:14,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1163549208] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:14,765 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:14,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 09:00:14,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8022231] [2021-11-09 09:00:14,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 09:00:14,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 09:00:14,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 09:00:14,766 INFO L87 Difference]: Start difference. First operand 1109 states and 1349 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:15,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:15,328 INFO L93 Difference]: Finished difference Result 1123 states and 1367 transitions. [2021-11-09 09:00:15,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 09:00:15,329 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 79 [2021-11-09 09:00:15,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:15,337 INFO L225 Difference]: With dead ends: 1123 [2021-11-09 09:00:15,337 INFO L226 Difference]: Without dead ends: 1119 [2021-11-09 09:00:15,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:00:15,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1119 states. [2021-11-09 09:00:15,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1119 to 1115. [2021-11-09 09:00:15,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1115 states, 746 states have (on average 1.8056300268096515) internal successors, (1347), 1106 states have internal predecessors, (1347), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:00:15,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1115 states to 1115 states and 1357 transitions. [2021-11-09 09:00:15,375 INFO L78 Accepts]: Start accepts. Automaton has 1115 states and 1357 transitions. Word has length 79 [2021-11-09 09:00:15,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:15,376 INFO L470 AbstractCegarLoop]: Abstraction has 1115 states and 1357 transitions. [2021-11-09 09:00:15,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:15,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1115 states and 1357 transitions. [2021-11-09 09:00:15,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 09:00:15,377 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:15,377 INFO L513 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:15,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:15,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:15,592 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:00:15,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:15,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1701419208, now seen corresponding path program 2 times [2021-11-09 09:00:15,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:15,594 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309608067] [2021-11-09 09:00:15,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 09:00:15,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:15,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:15,595 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:15,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 09:00:16,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 09:00:16,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:16,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 09:00:16,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:16,748 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:16,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:17,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:17,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309608067] [2021-11-09 09:00:17,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309608067] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:17,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:17,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 09:00:17,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542377471] [2021-11-09 09:00:17,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 09:00:17,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 09:00:17,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 09:00:17,343 INFO L87 Difference]: Start difference. First operand 1115 states and 1357 transitions. Second operand has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:19,061 INFO L93 Difference]: Finished difference Result 1143 states and 1395 transitions. [2021-11-09 09:00:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 09:00:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 83 [2021-11-09 09:00:19,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:19,070 INFO L225 Difference]: With dead ends: 1143 [2021-11-09 09:00:19,070 INFO L226 Difference]: Without dead ends: 1139 [2021-11-09 09:00:19,071 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 09:00:19,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2021-11-09 09:00:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1127. [2021-11-09 09:00:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 758 states have (on average 1.7981530343007917) internal successors, (1363), 1118 states have internal predecessors, (1363), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:00:19,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1373 transitions. [2021-11-09 09:00:19,098 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1373 transitions. Word has length 83 [2021-11-09 09:00:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:19,098 INFO L470 AbstractCegarLoop]: Abstraction has 1127 states and 1373 transitions. [2021-11-09 09:00:19,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.833333333333333) internal successors, (87), 18 states have internal predecessors, (87), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:19,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1373 transitions. [2021-11-09 09:00:19,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 09:00:19,100 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:19,100 INFO L513 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:19,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:19,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:19,318 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:00:19,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:19,319 INFO L85 PathProgramCache]: Analyzing trace with hash 331995592, now seen corresponding path program 3 times [2021-11-09 09:00:19,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:19,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2127921392] [2021-11-09 09:00:19,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 09:00:19,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:19,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:19,321 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:19,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 09:00:20,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 09:00:20,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:20,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 09:00:20,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:21,167 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:21,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:23,164 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:23,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:23,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2127921392] [2021-11-09 09:00:23,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2127921392] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:23,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:23,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 09:00:23,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790962932] [2021-11-09 09:00:23,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 09:00:23,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:23,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 09:00:23,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 09:00:23,168 INFO L87 Difference]: Start difference. First operand 1127 states and 1373 transitions. Second operand has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:32,629 INFO L93 Difference]: Finished difference Result 1183 states and 1457 transitions. [2021-11-09 09:00:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 09:00:32,630 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 91 [2021-11-09 09:00:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:32,638 INFO L225 Difference]: With dead ends: 1183 [2021-11-09 09:00:32,638 INFO L226 Difference]: Without dead ends: 1177 [2021-11-09 09:00:32,640 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 8.2s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 09:00:32,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2021-11-09 09:00:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1151. [2021-11-09 09:00:32,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 782 states have (on average 1.7826086956521738) internal successors, (1394), 1142 states have internal predecessors, (1394), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:00:32,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1404 transitions. [2021-11-09 09:00:32,670 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1404 transitions. Word has length 91 [2021-11-09 09:00:32,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:32,670 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1404 transitions. [2021-11-09 09:00:32,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.0294117647058822) internal successors, (103), 34 states have internal predecessors, (103), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1404 transitions. [2021-11-09 09:00:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 09:00:32,672 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:32,672 INFO L513 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:32,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:32,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:32,890 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:00:32,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:32,891 INFO L85 PathProgramCache]: Analyzing trace with hash -770221112, now seen corresponding path program 4 times [2021-11-09 09:00:32,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:32,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172553292] [2021-11-09 09:00:32,892 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 09:00:32,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:32,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:32,893 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:32,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 09:00:33,706 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 09:00:33,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:33,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 09:00:33,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:35,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 09:00:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 09:00:40,099 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 09:00:40,099 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172553292] [2021-11-09 09:00:40,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172553292] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 09:00:40,100 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 09:00:40,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 09:00:40,100 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863077686] [2021-11-09 09:00:40,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 09:00:40,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 09:00:40,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 09:00:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 09:00:40,104 INFO L87 Difference]: Start difference. First operand 1151 states and 1404 transitions. Second operand has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:56,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:00:56,893 INFO L93 Difference]: Finished difference Result 1243 states and 1524 transitions. [2021-11-09 09:00:56,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 09:00:56,894 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 107 [2021-11-09 09:00:56,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:00:56,901 INFO L225 Difference]: With dead ends: 1243 [2021-11-09 09:00:56,901 INFO L226 Difference]: Without dead ends: 1239 [2021-11-09 09:00:56,908 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 09:00:56,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2021-11-09 09:00:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1181. [2021-11-09 09:00:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 812 states have (on average 1.7733990147783252) internal successors, (1440), 1172 states have internal predecessors, (1440), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-09 09:00:56,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1450 transitions. [2021-11-09 09:00:56,936 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1450 transitions. Word has length 107 [2021-11-09 09:00:56,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:00:56,937 INFO L470 AbstractCegarLoop]: Abstraction has 1181 states and 1450 transitions. [2021-11-09 09:00:56,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.0454545454545454) internal successors, (135), 66 states have internal predecessors, (135), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-11-09 09:00:56,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1450 transitions. [2021-11-09 09:00:56,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 09:00:56,938 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:00:56,939 INFO L513 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:00:56,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 09:00:57,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 09:00:57,153 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 527 more)] === [2021-11-09 09:00:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:00:57,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1054827912, now seen corresponding path program 5 times [2021-11-09 09:00:57,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 09:00:57,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1651902272] [2021-11-09 09:00:57,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 09:00:57,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 09:00:57,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 09:00:57,155 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 09:00:57,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1d47a32-c3c8-47f7-8bb4-05ad89de3725/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 09:00:59,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 09:00:59,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 09:00:59,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 09:00:59,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 09:00:59,105 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 09:00:59,411 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 09:00:59,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-09 09:00:59,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-09 09:00:59,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 28