./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.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_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/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_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/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_48d19c5a-b239-41a7-9fea-191c0fc335a9/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 d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:50,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:50,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:50,664 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:50,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:50,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:50,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:50,670 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:50,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:50,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:50,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:50,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:50,677 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:50,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:50,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:50,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:50,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:50,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:50,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:50,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:50,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:50,706 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:50,709 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:50,710 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:50,715 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:50,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:50,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:50,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:50,717 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:50,719 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:50,719 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:50,720 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:50,721 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:50,722 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:50,723 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:50,723 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:50,724 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:50,724 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:50,724 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:50,725 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:50,726 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:50,727 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-09 08:29:50,768 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:50,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:50,769 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:50,769 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:50,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:50,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:50,777 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:50,777 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:50,778 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:50,778 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:29:50,779 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:50,779 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:50,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:50,780 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:29:50,780 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:29:50,780 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:29:50,781 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:50,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:29:50,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:50,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:50,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:50,782 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:50,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:50,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:50,783 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:50,783 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:50,783 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 08:29:50,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 08:29:50,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:50,785 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2021-11-09 08:29:51,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:51,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:51,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:51,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:51,143 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:51,144 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-09 08:29:51,230 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/35b1a3eb3/ddea9d4c80544f7d8915179b69766050/FLAGd0ade989a [2021-11-09 08:29:51,821 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:51,821 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-09 08:29:51,840 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/35b1a3eb3/ddea9d4c80544f7d8915179b69766050/FLAGd0ade989a [2021-11-09 08:29:52,049 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/35b1a3eb3/ddea9d4c80544f7d8915179b69766050 [2021-11-09 08:29:52,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:52,052 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:29:52,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:52,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:52,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:52,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b52ec32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52, skipping insertion in model container [2021-11-09 08:29:52,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:52" (1/1) ... [2021-11-09 08:29:52,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:52,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:52,573 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-09 08:29:52,677 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-09 08:29:52,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:52,721 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 08:29:52,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@48c187ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:52, skipping insertion in model container [2021-11-09 08:29:52,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:52,724 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-09 08:29:52,726 INFO L168 Benchmark]: Toolchain (without parser) took 672.58 ms. Allocated memory is still 115.3 MB. Free memory was 71.8 MB in the beginning and 76.9 MB in the end (delta: -5.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:52,728 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 115.3 MB. Free memory is still 90.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 08:29:52,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 669.79 ms. Allocated memory is still 115.3 MB. Free memory was 71.6 MB in the beginning and 76.9 MB in the end (delta: -5.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 08:29:52,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 115.3 MB. Free memory is still 90.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 669.79 ms. Allocated memory is still 115.3 MB. Free memory was 71.6 MB in the beginning and 76.9 MB in the end (delta: -5.3 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: 815]: 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/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_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/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_48d19c5a-b239-41a7-9fea-191c0fc335a9/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 d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 08:29:55,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 08:29:55,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 08:29:55,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 08:29:55,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 08:29:55,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 08:29:55,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 08:29:55,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 08:29:55,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 08:29:55,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 08:29:55,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 08:29:55,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 08:29:55,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 08:29:55,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 08:29:55,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 08:29:55,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 08:29:55,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 08:29:55,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 08:29:55,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 08:29:55,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 08:29:55,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 08:29:55,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 08:29:55,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 08:29:55,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 08:29:55,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 08:29:55,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 08:29:55,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 08:29:55,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 08:29:55,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 08:29:55,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 08:29:55,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 08:29:55,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 08:29:55,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 08:29:55,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 08:29:55,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 08:29:55,238 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 08:29:55,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 08:29:55,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 08:29:55,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 08:29:55,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 08:29:55,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 08:29:55,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-09 08:29:55,299 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 08:29:55,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 08:29:55,300 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 08:29:55,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 08:29:55,303 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 08:29:55,303 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 08:29:55,303 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 08:29:55,304 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 08:29:55,304 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 08:29:55,304 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-09 08:29:55,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 08:29:55,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 08:29:55,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 08:29:55,306 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-09 08:29:55,306 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-09 08:29:55,306 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-09 08:29:55,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 08:29:55,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-09 08:29:55,307 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-09 08:29:55,307 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-09 08:29:55,307 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 08:29:55,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 08:29:55,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 08:29:55,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 08:29:55,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 08:29:55,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:55,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 08:29:55,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 08:29:55,309 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-09 08:29:55,309 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-09 08:29:55,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 08:29:55,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-09 08:29:55,310 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d619c50f205026415119876db06c9bf079f51316bee7c051af8e3a06a37e393d [2021-11-09 08:29:55,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 08:29:55,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 08:29:55,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 08:29:55,712 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 08:29:55,713 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 08:29:55,714 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-09 08:29:55,788 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/703b3bda5/876bddc3ab1e43879fd18eb0d4c57161/FLAG7c0f8db9b [2021-11-09 08:29:56,511 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 08:29:56,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i [2021-11-09 08:29:56,534 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/703b3bda5/876bddc3ab1e43879fd18eb0d4c57161/FLAG7c0f8db9b [2021-11-09 08:29:56,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/data/703b3bda5/876bddc3ab1e43879fd18eb0d4c57161 [2021-11-09 08:29:56,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 08:29:56,712 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-09 08:29:56,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:56,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 08:29:56,723 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 08:29:56,724 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:56" (1/1) ... [2021-11-09 08:29:56,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f58d5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:56, skipping insertion in model container [2021-11-09 08:29:56,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 08:29:56" (1/1) ... [2021-11-09 08:29:56,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 08:29:56,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:57,307 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-09 08:29:57,446 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-09 08:29:57,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,501 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-09 08:29:57,535 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 08:29:57,563 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-09 08:29:57,640 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-09 08:29:57,655 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,660 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 08:29:57,706 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[37019,37032] [2021-11-09 08:29:57,796 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_48d19c5a-b239-41a7-9fea-191c0fc335a9/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test2-2.i[47352,47365] [2021-11-09 08:29:57,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 08:29:57,883 INFO L208 MainTranslator]: Completed translation [2021-11-09 08:29:57,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57 WrapperNode [2021-11-09 08:29:57,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 08:29:57,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 08:29:57,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 08:29:57,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 08:29:57,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:57,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:58,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:58,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:58,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:58,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 08:29:58,104 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 08:29:58,104 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 08:29:58,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 08:29:58,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (1/1) ... [2021-11-09 08:29:58,113 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 08:29:58,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 08:29:58,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 08:29:58,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 08:29:58,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-09 08:29:58,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 08:29:58,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:29:58,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-09 08:29:58,201 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-09 08:29:58,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-09 08:29:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-09 08:29:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-09 08:29:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-09 08:29:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-09 08:29:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-09 08:29:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-09 08:29:58,203 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-09 08:29:58,204 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-09 08:29:58,205 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-09 08:29:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-09 08:29:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-09 08:29:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-09 08:29:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-09 08:29:58,206 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-09 08:29:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-09 08:29:58,207 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-09 08:29:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-09 08:29:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-09 08:29:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-09 08:29:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-09 08:29:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-09 08:29:58,208 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-09 08:29:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-09 08:29:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-09 08:29:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-09 08:29:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-09 08:29:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-09 08:29:58,209 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-09 08:29:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-09 08:29:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-09 08:29:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-09 08:29:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-09 08:29:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-09 08:29:58,210 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-09 08:29:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-09 08:29:58,211 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-09 08:29:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-09 08:29:58,212 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-09 08:29:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-09 08:29:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-09 08:29:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-09 08:29:58,213 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-09 08:29:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-09 08:29:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-09 08:29:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-09 08:29:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-09 08:29:58,214 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-09 08:29:58,215 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-09 08:29:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-09 08:29:58,216 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-09 08:29:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-09 08:29:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-09 08:29:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-09 08:29:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-09 08:29:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-09 08:29:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-09 08:29:58,217 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-09 08:29:58,218 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-09 08:29:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-09 08:29:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-09 08:29:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-09 08:29:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-09 08:29:58,219 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-09 08:29:58,220 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-09 08:29:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-09 08:29:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-09 08:29:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-09 08:29:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-09 08:29:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-09 08:29:58,221 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-09 08:29:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-09 08:29:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-09 08:29:58,222 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-09 08:29:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-09 08:29:58,223 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-09 08:29:58,226 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-09 08:29:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-09 08:29:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-09 08:29:58,227 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-09 08:29:58,228 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-09 08:29:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-09 08:29:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-09 08:29:58,245 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-09 08:29:58,246 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-09 08:29:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-09 08:29:58,251 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-09 08:29:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-09 08:29:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-09 08:29:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-09 08:29:58,252 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-09 08:29:58,253 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-09 08:29:58,254 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-09 08:29:58,255 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-09 08:29:58,256 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure clock [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure time [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure difftime [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure strftime [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure strftime_l [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2021-11-09 08:29:58,257 INFO L130 BoogieDeclarations]: Found specification of procedure gmtime_r [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure localtime_r [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure asctime [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure asctime_r [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure ctime_r [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure tzset [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure stime [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure timegm [2021-11-09 08:29:58,258 INFO L130 BoogieDeclarations]: Found specification of procedure timelocal [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure dysize [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure nanosleep [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getres [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure clock_gettime [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure clock_settime [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure clock_nanosleep [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure clock_getcpuclockid [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure timer_create [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure timer_delete [2021-11-09 08:29:58,259 INFO L130 BoogieDeclarations]: Found specification of procedure timer_settime [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure timer_gettime [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure timer_getoverrun [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure timespec_get [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 08:29:58,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-09 08:29:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-09 08:29:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-09 08:29:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-09 08:29:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 08:29:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-09 08:29:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-09 08:29:58,827 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-09 08:30:04,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 08:30:04,023 INFO L299 CfgBuilder]: Removed 63 assume(true) statements. [2021-11-09 08:30:04,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:04 BoogieIcfgContainer [2021-11-09 08:30:04,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 08:30:04,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 08:30:04,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 08:30:04,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 08:30:04,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 08:29:56" (1/3) ... [2021-11-09 08:30:04,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f5b0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:04, skipping insertion in model container [2021-11-09 08:30:04,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 08:29:57" (2/3) ... [2021-11-09 08:30:04,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f5b0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 08:30:04, skipping insertion in model container [2021-11-09 08:30:04,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 08:30:04" (3/3) ... [2021-11-09 08:30:04,040 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test2-2.i [2021-11-09 08:30:04,045 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 08:30:04,046 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 536 error locations. [2021-11-09 08:30:04,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 08:30:04,123 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 08:30:04,130 INFO L340 AbstractCegarLoop]: Starting to check reachability of 536 error locations. [2021-11-09 08:30:04,178 INFO L276 IsEmpty]: Start isEmpty. Operand has 1089 states, 539 states have (on average 2.2319109461966606) internal successors, (1203), 1077 states have internal predecessors, (1203), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:04,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:30:04,186 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:04,190 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:04,192 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:04,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:04,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1408970550, now seen corresponding path program 1 times [2021-11-09 08:30:04,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:04,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128888539] [2021-11-09 08:30:04,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:04,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:04,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:04,218 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:04,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-09 08:30:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:04,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:04,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:04,627 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 08:30:04,648 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 08:30:04,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:04,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:04,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:04,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128888539] [2021-11-09 08:30:04,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128888539] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:04,697 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:04,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:30:04,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602081727] [2021-11-09 08:30:04,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:04,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:04,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:04,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:04,734 INFO L87 Difference]: Start difference. First operand has 1089 states, 539 states have (on average 2.2319109461966606) internal successors, (1203), 1077 states have internal predecessors, (1203), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:07,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:07,017 INFO L93 Difference]: Finished difference Result 1253 states and 1329 transitions. [2021-11-09 08:30:07,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:07,019 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 08:30:07,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:07,042 INFO L225 Difference]: With dead ends: 1253 [2021-11-09 08:30:07,042 INFO L226 Difference]: Without dead ends: 1250 [2021-11-09 08:30:07,044 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 08:30:07,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2021-11-09 08:30:07,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1072. [2021-11-09 08:30:07,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1072 states, 539 states have (on average 2.0760667903525047) internal successors, (1119), 1061 states have internal predecessors, (1119), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:30:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1140 transitions. [2021-11-09 08:30:07,172 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1140 transitions. Word has length 7 [2021-11-09 08:30:07,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:07,173 INFO L470 AbstractCegarLoop]: Abstraction has 1072 states and 1140 transitions. [2021-11-09 08:30:07,173 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 08:30:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1140 transitions. [2021-11-09 08:30:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-09 08:30:07,174 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:07,174 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:07,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:07,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:07,385 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:07,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:07,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1408970549, now seen corresponding path program 1 times [2021-11-09 08:30:07,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:07,386 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109149660] [2021-11-09 08:30:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:07,386 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:07,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:07,388 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:07,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-09 08:30:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:07,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:07,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:07,620 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 08:30:07,638 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 08:30:07,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:07,725 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 08:30:07,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:07,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109149660] [2021-11-09 08:30:07,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109149660] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:07,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:07,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:30:07,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491175508] [2021-11-09 08:30:07,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:07,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:07,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:07,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:07,730 INFO L87 Difference]: Start difference. First operand 1072 states and 1140 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 08:30:12,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:12,676 INFO L93 Difference]: Finished difference Result 1554 states and 1658 transitions. [2021-11-09 08:30:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:12,677 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 08:30:12,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:12,686 INFO L225 Difference]: With dead ends: 1554 [2021-11-09 08:30:12,686 INFO L226 Difference]: Without dead ends: 1554 [2021-11-09 08:30:12,687 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 08:30:12,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2021-11-09 08:30:12,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1107. [2021-11-09 08:30:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 583 states have (on average 2.0548885077186965) internal successors, (1198), 1096 states have internal predecessors, (1198), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:30:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1219 transitions. [2021-11-09 08:30:12,727 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1219 transitions. Word has length 7 [2021-11-09 08:30:12,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:12,728 INFO L470 AbstractCegarLoop]: Abstraction has 1107 states and 1219 transitions. [2021-11-09 08:30:12,728 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 08:30:12,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1219 transitions. [2021-11-09 08:30:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:30:12,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:12,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:12,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:12,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:12,945 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:12,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:12,945 INFO L85 PathProgramCache]: Analyzing trace with hash -2093131419, now seen corresponding path program 1 times [2021-11-09 08:30:12,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:12,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1257623102] [2021-11-09 08:30:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:12,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:12,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:12,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:12,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-09 08:30:13,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:13,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:13,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:13,203 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 08:30:13,219 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 08:30:13,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:13,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:13,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:13,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1257623102] [2021-11-09 08:30:13,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1257623102] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:13,268 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:13,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-09 08:30:13,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281610862] [2021-11-09 08:30:13,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:13,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:13,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:13,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:13,273 INFO L87 Difference]: Start difference. First operand 1107 states and 1219 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 08:30:15,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:15,517 INFO L93 Difference]: Finished difference Result 1273 states and 1403 transitions. [2021-11-09 08:30:15,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:15,519 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 08:30:15,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:15,527 INFO L225 Difference]: With dead ends: 1273 [2021-11-09 08:30:15,527 INFO L226 Difference]: Without dead ends: 1273 [2021-11-09 08:30:15,527 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 08:30:15,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1273 states. [2021-11-09 08:30:15,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1273 to 1060. [2021-11-09 08:30:15,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 583 states have (on average 1.9691252144082332) internal successors, (1148), 1049 states have internal predecessors, (1148), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:30:15,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1169 transitions. [2021-11-09 08:30:15,561 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1169 transitions. Word has length 12 [2021-11-09 08:30:15,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:15,562 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1169 transitions. [2021-11-09 08:30:15,562 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 08:30:15,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1169 transitions. [2021-11-09 08:30:15,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-09 08:30:15,563 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:15,563 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:15,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-09 08:30:15,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:15,776 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:15,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:15,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2093131418, now seen corresponding path program 1 times [2021-11-09 08:30:15,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:15,777 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867705901] [2021-11-09 08:30:15,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:15,777 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:15,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:15,778 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:15,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-09 08:30:15,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:15,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:15,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:16,042 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 08:30:16,091 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 08:30:16,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:16,206 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 08:30:16,206 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:16,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867705901] [2021-11-09 08:30:16,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867705901] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:16,206 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:16,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-09 08:30:16,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336657649] [2021-11-09 08:30:16,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:16,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:16,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:16,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:16,208 INFO L87 Difference]: Start difference. First operand 1060 states and 1169 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 08:30:20,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:20,690 INFO L93 Difference]: Finished difference Result 1303 states and 1397 transitions. [2021-11-09 08:30:20,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:20,693 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 08:30:20,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:20,700 INFO L225 Difference]: With dead ends: 1303 [2021-11-09 08:30:20,700 INFO L226 Difference]: Without dead ends: 1303 [2021-11-09 08:30:20,701 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 08:30:20,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1303 states. [2021-11-09 08:30:20,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1303 to 1050. [2021-11-09 08:30:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 583 states have (on average 1.946826758147513) internal successors, (1135), 1039 states have internal predecessors, (1135), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-09 08:30:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1156 transitions. [2021-11-09 08:30:20,742 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1156 transitions. Word has length 12 [2021-11-09 08:30:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:20,743 INFO L470 AbstractCegarLoop]: Abstraction has 1050 states and 1156 transitions. [2021-11-09 08:30:20,743 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 08:30:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1156 transitions. [2021-11-09 08:30:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-09 08:30:20,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:20,744 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:20,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-09 08:30:20,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:20,956 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr429REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1355083610, now seen corresponding path program 1 times [2021-11-09 08:30:20,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:20,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917045911] [2021-11-09 08:30:20,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:20,958 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:20,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:20,959 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:20,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-09 08:30:21,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:21,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:21,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:21,281 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 08:30:21,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:21,385 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 08:30:21,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:21,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917045911] [2021-11-09 08:30:21,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917045911] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:21,386 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:21,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:30:21,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266489974] [2021-11-09 08:30:21,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 08:30:21,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:21,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 08:30:21,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:21,387 INFO L87 Difference]: Start difference. First operand 1050 states and 1156 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:21,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:21,734 INFO L93 Difference]: Finished difference Result 1512 states and 1653 transitions. [2021-11-09 08:30:21,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:21,735 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-09 08:30:21,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:21,744 INFO L225 Difference]: With dead ends: 1512 [2021-11-09 08:30:21,744 INFO L226 Difference]: Without dead ends: 1512 [2021-11-09 08:30:21,745 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 08:30:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2021-11-09 08:30:21,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1219. [2021-11-09 08:30:21,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1219 states, 751 states have (on average 1.8974700399467377) internal successors, (1425), 1207 states have internal predecessors, (1425), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:21,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1448 transitions. [2021-11-09 08:30:21,780 INFO L78 Accepts]: Start accepts. Automaton has 1219 states and 1448 transitions. Word has length 15 [2021-11-09 08:30:21,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:21,780 INFO L470 AbstractCegarLoop]: Abstraction has 1219 states and 1448 transitions. [2021-11-09 08:30:21,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:21,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1219 states and 1448 transitions. [2021-11-09 08:30:21,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 08:30:21,781 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:21,781 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:21,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-09 08:30:21,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:21,993 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr340REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:21,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:21,993 INFO L85 PathProgramCache]: Analyzing trace with hash 522513117, now seen corresponding path program 1 times [2021-11-09 08:30:21,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:21,994 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [997647155] [2021-11-09 08:30:21,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:21,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:21,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:21,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:21,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-09 08:30:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:22,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:22,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:22,266 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 08:30:22,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:22,305 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 08:30:22,305 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:22,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [997647155] [2021-11-09 08:30:22,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [997647155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:22,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:22,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:30:22,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448009964] [2021-11-09 08:30:22,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:22,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:22,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:22,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:22,308 INFO L87 Difference]: Start difference. First operand 1219 states and 1448 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:22,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:22,350 INFO L93 Difference]: Finished difference Result 1373 states and 1588 transitions. [2021-11-09 08:30:22,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:22,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-09 08:30:22,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:22,359 INFO L225 Difference]: With dead ends: 1373 [2021-11-09 08:30:22,359 INFO L226 Difference]: Without dead ends: 1373 [2021-11-09 08:30:22,360 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:22,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2021-11-09 08:30:22,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1159. [2021-11-09 08:30:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1159 states, 715 states have (on average 1.8727272727272728) internal successors, (1339), 1147 states have internal predecessors, (1339), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:22,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1159 states to 1159 states and 1362 transitions. [2021-11-09 08:30:22,394 INFO L78 Accepts]: Start accepts. Automaton has 1159 states and 1362 transitions. Word has length 17 [2021-11-09 08:30:22,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:22,394 INFO L470 AbstractCegarLoop]: Abstraction has 1159 states and 1362 transitions. [2021-11-09 08:30:22,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:22,394 INFO L276 IsEmpty]: Start isEmpty. Operand 1159 states and 1362 transitions. [2021-11-09 08:30:22,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-09 08:30:22,396 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:22,396 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 08:30:22,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:22,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:22,608 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr534ENSURES_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:22,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash 905393921, now seen corresponding path program 1 times [2021-11-09 08:30:22,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:22,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [435977303] [2021-11-09 08:30:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:22,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:22,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:22,611 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:22,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-09 08:30:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:22,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:22,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:22,947 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:22,948 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:22,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-09 08:30:23,016 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-09 08:30:23,016 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 08:30:23,089 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-09 08:30:23,090 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 08:30:23,126 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 08:30:23,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:23,221 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 08:30:23,221 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:23,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [435977303] [2021-11-09 08:30:23,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [435977303] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:23,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:23,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:30:23,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102421370] [2021-11-09 08:30:23,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:23,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:23,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:23,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:23,224 INFO L87 Difference]: Start difference. First operand 1159 states and 1362 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:25,911 INFO L93 Difference]: Finished difference Result 1474 states and 1710 transitions. [2021-11-09 08:30:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-09 08:30:25,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:25,920 INFO L225 Difference]: With dead ends: 1474 [2021-11-09 08:30:25,921 INFO L226 Difference]: Without dead ends: 1474 [2021-11-09 08:30:25,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:30:25,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-09 08:30:25,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1158. [2021-11-09 08:30:25,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1158 states, 714 states have (on average 1.8725490196078431) internal successors, (1337), 1146 states have internal predecessors, (1337), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1360 transitions. [2021-11-09 08:30:25,961 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1360 transitions. Word has length 18 [2021-11-09 08:30:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:25,961 INFO L470 AbstractCegarLoop]: Abstraction has 1158 states and 1360 transitions. [2021-11-09 08:30:25,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-09 08:30:25,962 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1360 transitions. [2021-11-09 08:30:25,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-09 08:30:25,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:25,963 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 08:30:25,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:26,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:26,177 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr14REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:26,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:26,177 INFO L85 PathProgramCache]: Analyzing trace with hash 957770193, now seen corresponding path program 1 times [2021-11-09 08:30:26,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:26,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877884244] [2021-11-09 08:30:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:26,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:26,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:26,183 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:26,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-09 08:30:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:26,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-09 08:30:26,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:26,551 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 08:30:26,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:26,602 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 08:30:26,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:26,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877884244] [2021-11-09 08:30:26,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877884244] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:26,603 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:26,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-09 08:30:26,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674735012] [2021-11-09 08:30:26,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:26,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:26,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:26,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:26,605 INFO L87 Difference]: Start difference. First operand 1158 states and 1360 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 08:30:26,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:26,650 INFO L93 Difference]: Finished difference Result 1098 states and 1274 transitions. [2021-11-09 08:30:26,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 08:30:26,651 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 08:30:26,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:26,657 INFO L225 Difference]: With dead ends: 1098 [2021-11-09 08:30:26,657 INFO L226 Difference]: Without dead ends: 1098 [2021-11-09 08:30:26,658 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 08:30:26,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1098 states. [2021-11-09 08:30:26,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1098 to 1098. [2021-11-09 08:30:26,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1098 states, 678 states have (on average 1.845132743362832) internal successors, (1251), 1086 states have internal predecessors, (1251), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:26,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1274 transitions. [2021-11-09 08:30:26,685 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1274 transitions. Word has length 22 [2021-11-09 08:30:26,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:26,686 INFO L470 AbstractCegarLoop]: Abstraction has 1098 states and 1274 transitions. [2021-11-09 08:30:26,686 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 08:30:26,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1274 transitions. [2021-11-09 08:30:26,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-09 08:30:26,687 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:26,687 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 08:30:26,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:26,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:26,904 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr38REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:26,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:26,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1294153163, now seen corresponding path program 1 times [2021-11-09 08:30:26,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:26,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [972762818] [2021-11-09 08:30:26,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:26,905 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:26,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:26,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:26,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-09 08:30:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:27,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:27,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:27,283 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 08:30:27,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:27,360 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 08:30:27,362 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:27,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [972762818] [2021-11-09 08:30:27,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [972762818] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:27,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:27,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-09 08:30:27,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997494073] [2021-11-09 08:30:27,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:30:27,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:27,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:30:27,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:30:27,366 INFO L87 Difference]: Start difference. First operand 1098 states and 1274 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 08:30:27,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:27,459 INFO L93 Difference]: Finished difference Result 1070 states and 1218 transitions. [2021-11-09 08:30:27,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:27,459 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 08:30:27,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:27,467 INFO L225 Difference]: With dead ends: 1070 [2021-11-09 08:30:27,467 INFO L226 Difference]: Without dead ends: 1070 [2021-11-09 08:30:27,468 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 08:30:27,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2021-11-09 08:30:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2021-11-09 08:30:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 662 states have (on average 1.8021148036253776) internal successors, (1193), 1056 states have internal predecessors, (1193), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:27,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1216 transitions. [2021-11-09 08:30:27,495 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1216 transitions. Word has length 24 [2021-11-09 08:30:27,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:27,495 INFO L470 AbstractCegarLoop]: Abstraction has 1068 states and 1216 transitions. [2021-11-09 08:30:27,496 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 08:30:27,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1216 transitions. [2021-11-09 08:30:27,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:30:27,499 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:27,500 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 08:30:27,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:27,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:27,712 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr52REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:27,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:27,712 INFO L85 PathProgramCache]: Analyzing trace with hash 62146457, now seen corresponding path program 1 times [2021-11-09 08:30:27,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:27,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1764219007] [2021-11-09 08:30:27,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:27,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:27,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:27,714 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:27,718 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-09 08:30:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:27,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:27,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:28,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-09 08:30:28,175 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 08:30:28,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:28,337 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 08:30:28,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:28,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1764219007] [2021-11-09 08:30:28,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1764219007] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:28,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:28,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-09 08:30:28,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746274640] [2021-11-09 08:30:28,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:28,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:28,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:28,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:28,340 INFO L87 Difference]: Start difference. First operand 1068 states and 1216 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 08:30:30,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:30,529 INFO L93 Difference]: Finished difference Result 1499 states and 1713 transitions. [2021-11-09 08:30:30,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-09 08:30:30,535 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 08:30:30,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:30,555 INFO L225 Difference]: With dead ends: 1499 [2021-11-09 08:30:30,555 INFO L226 Difference]: Without dead ends: 1499 [2021-11-09 08:30:30,556 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 08:30:30,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2021-11-09 08:30:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1064. [2021-11-09 08:30:30,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1064 states, 662 states have (on average 1.7900302114803626) internal successors, (1185), 1052 states have internal predecessors, (1185), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:30,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1064 states to 1064 states and 1208 transitions. [2021-11-09 08:30:30,585 INFO L78 Accepts]: Start accepts. Automaton has 1064 states and 1208 transitions. Word has length 38 [2021-11-09 08:30:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:30,586 INFO L470 AbstractCegarLoop]: Abstraction has 1064 states and 1208 transitions. [2021-11-09 08:30:30,586 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 08:30:30,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1064 states and 1208 transitions. [2021-11-09 08:30:30,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-09 08:30:30,587 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:30,588 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 08:30:30,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:30,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:30,801 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr53REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:30,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:30,801 INFO L85 PathProgramCache]: Analyzing trace with hash 62146458, now seen corresponding path program 1 times [2021-11-09 08:30:30,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:30,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [711779395] [2021-11-09 08:30:30,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:30,802 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:30,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:30,803 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:30,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-09 08:30:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:31,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:30:31,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:31,140 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 08:30:31,470 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 08:30:31,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:32,010 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 08:30:32,011 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:32,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [711779395] [2021-11-09 08:30:32,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [711779395] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:32,011 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:32,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:30:32,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932696338] [2021-11-09 08:30:32,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:32,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:32,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:32,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:30:32,013 INFO L87 Difference]: Start difference. First operand 1064 states and 1208 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 08:30:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:39,534 INFO L93 Difference]: Finished difference Result 1553 states and 1730 transitions. [2021-11-09 08:30:39,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:30:39,536 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 08:30:39,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:39,542 INFO L225 Difference]: With dead ends: 1553 [2021-11-09 08:30:39,542 INFO L226 Difference]: Without dead ends: 1553 [2021-11-09 08:30:39,542 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 08:30:39,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2021-11-09 08:30:39,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1060. [2021-11-09 08:30:39,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 662 states have (on average 1.7779456193353473) internal successors, (1177), 1048 states have internal predecessors, (1177), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:39,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1200 transitions. [2021-11-09 08:30:39,570 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1200 transitions. Word has length 38 [2021-11-09 08:30:39,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:39,570 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1200 transitions. [2021-11-09 08:30:39,571 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 08:30:39,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1200 transitions. [2021-11-09 08:30:39,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-09 08:30:39,572 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:39,573 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 08:30:39,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:39,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:39,785 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:39,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2044490264, now seen corresponding path program 1 times [2021-11-09 08:30:39,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:39,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504797466] [2021-11-09 08:30:39,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:39,786 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:39,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:39,788 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:39,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-09 08:30:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:40,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:30:40,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:40,512 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 08:30:40,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:40,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 08:30:40,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:40,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504797466] [2021-11-09 08:30:40,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504797466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:40,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:40,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:30:40,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228487664] [2021-11-09 08:30:40,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-09 08:30:40,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:40,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-09 08:30:40,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-09 08:30:40,683 INFO L87 Difference]: Start difference. First operand 1060 states and 1200 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 08:30:40,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:30:40,756 INFO L93 Difference]: Finished difference Result 1048 states and 1180 transitions. [2021-11-09 08:30:40,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-09 08:30:40,757 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 08:30:40,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:30:40,764 INFO L225 Difference]: With dead ends: 1048 [2021-11-09 08:30:40,764 INFO L226 Difference]: Without dead ends: 1048 [2021-11-09 08:30:40,764 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 08:30:40,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-09 08:30:40,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1048. [2021-11-09 08:30:40,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 650 states have (on average 1.78) internal successors, (1157), 1036 states have internal predecessors, (1157), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:30:40,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1180 transitions. [2021-11-09 08:30:40,795 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1180 transitions. Word has length 56 [2021-11-09 08:30:40,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:30:40,796 INFO L470 AbstractCegarLoop]: Abstraction has 1048 states and 1180 transitions. [2021-11-09 08:30:40,796 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 08:30:40,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1180 transitions. [2021-11-09 08:30:40,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-09 08:30:40,802 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:30:40,802 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 08:30:40,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-09 08:30:41,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:30:41,016 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr71REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:30:41,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:30:41,018 INFO L85 PathProgramCache]: Analyzing trace with hash -594226460, now seen corresponding path program 1 times [2021-11-09 08:30:41,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:30:41,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1688455051] [2021-11-09 08:30:41,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:30:41,019 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:30:41,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:30:41,020 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:30:41,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-09 08:30:41,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:30:41,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:30:41,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:30:41,576 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 08:30:41,588 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 08:30:42,381 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-09 08:30:42,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 27 [2021-11-09 08:30:42,404 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-09 08:30:42,405 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2021-11-09 08:30:42,453 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 08:30:42,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:30:48,023 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 08:30:48,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:30:48,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1688455051] [2021-11-09 08:30:48,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1688455051] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:30:48,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:30:48,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-09 08:30:48,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888570746] [2021-11-09 08:30:48,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:30:48,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:30:48,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:30:48,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-09 08:30:48,027 INFO L87 Difference]: Start difference. First operand 1048 states and 1180 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 08:31:01,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:01,683 INFO L93 Difference]: Finished difference Result 1249 states and 1441 transitions. [2021-11-09 08:31:01,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-09 08:31:01,686 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 08:31:01,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:01,691 INFO L225 Difference]: With dead ends: 1249 [2021-11-09 08:31:01,691 INFO L226 Difference]: Without dead ends: 1249 [2021-11-09 08:31:01,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=26, Invalid=28, Unknown=2, NotChecked=0, Total=56 [2021-11-09 08:31:01,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1249 states. [2021-11-09 08:31:01,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1249 to 1010. [2021-11-09 08:31:01,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1010 states, 650 states have (on average 1.7215384615384615) internal successors, (1119), 998 states have internal predecessors, (1119), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:31:01,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1142 transitions. [2021-11-09 08:31:01,714 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1142 transitions. Word has length 64 [2021-11-09 08:31:01,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:01,714 INFO L470 AbstractCegarLoop]: Abstraction has 1010 states and 1142 transitions. [2021-11-09 08:31:01,714 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 08:31:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1142 transitions. [2021-11-09 08:31:01,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:31:01,715 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:01,716 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 08:31:01,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:01,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:01,931 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr76REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:31:01,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:01,931 INFO L85 PathProgramCache]: Analyzing trace with hash -788480025, now seen corresponding path program 1 times [2021-11-09 08:31:01,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:01,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881427924] [2021-11-09 08:31:01,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:01,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:01,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:01,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:01,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-09 08:31:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:02,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-09 08:31:02,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:02,587 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 08:31:02,601 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2021-11-09 08:31:02,639 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 08:31:02,654 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 08:31:02,654 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:02,795 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 08:31:02,795 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:02,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881427924] [2021-11-09 08:31:02,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881427924] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:02,795 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:02,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-09 08:31:02,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878841819] [2021-11-09 08:31:02,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-09 08:31:02,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:02,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-09 08:31:02,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-09 08:31:02,797 INFO L87 Difference]: Start difference. First operand 1010 states and 1142 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 08:31:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:06,331 INFO L93 Difference]: Finished difference Result 1009 states and 1141 transitions. [2021-11-09 08:31:06,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:31:06,338 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 08:31:06,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:06,343 INFO L225 Difference]: With dead ends: 1009 [2021-11-09 08:31:06,343 INFO L226 Difference]: Without dead ends: 1009 [2021-11-09 08:31:06,343 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-09 08:31:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2021-11-09 08:31:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 1009. [2021-11-09 08:31:06,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 650 states have (on average 1.72) internal successors, (1118), 997 states have internal predecessors, (1118), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:31:06,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1141 transitions. [2021-11-09 08:31:06,364 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1141 transitions. Word has length 69 [2021-11-09 08:31:06,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:06,364 INFO L470 AbstractCegarLoop]: Abstraction has 1009 states and 1141 transitions. [2021-11-09 08:31:06,365 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 08:31:06,365 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1141 transitions. [2021-11-09 08:31:06,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-09 08:31:06,366 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:06,366 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 08:31:06,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:06,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:06,586 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr77REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:31:06,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:06,586 INFO L85 PathProgramCache]: Analyzing trace with hash -788480024, now seen corresponding path program 1 times [2021-11-09 08:31:06,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:06,587 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [63324882] [2021-11-09 08:31:06,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:06,587 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:06,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:06,589 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:06,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-09 08:31:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:07,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-09 08:31:07,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:07,352 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 08:31:07,379 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 08:31:07,396 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 08:31:07,477 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 08:31:07,483 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 08:31:07,516 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 08:31:07,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:07,879 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 08:31:07,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:07,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [63324882] [2021-11-09 08:31:07,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [63324882] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:07,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:07,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-09 08:31:07,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682109941] [2021-11-09 08:31:07,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-09 08:31:07,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:07,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-09 08:31:07,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-09 08:31:07,881 INFO L87 Difference]: Start difference. First operand 1009 states and 1141 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 08:31:18,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:18,252 INFO L93 Difference]: Finished difference Result 1008 states and 1140 transitions. [2021-11-09 08:31:18,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:31:18,253 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 08:31:18,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:18,259 INFO L225 Difference]: With dead ends: 1008 [2021-11-09 08:31:18,260 INFO L226 Difference]: Without dead ends: 1008 [2021-11-09 08:31:18,262 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 08:31:18,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-09 08:31:18,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 1008. [2021-11-09 08:31:18,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 649 states have (on average 1.7211093990755009) internal successors, (1117), 996 states have internal predecessors, (1117), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-09 08:31:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1140 transitions. [2021-11-09 08:31:18,284 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1140 transitions. Word has length 69 [2021-11-09 08:31:18,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:18,284 INFO L470 AbstractCegarLoop]: Abstraction has 1008 states and 1140 transitions. [2021-11-09 08:31:18,284 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 08:31:18,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1140 transitions. [2021-11-09 08:31:18,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-09 08:31:18,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:18,286 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 08:31:18,307 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-11-09 08:31:18,500 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:18,500 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:31:18,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:18,501 INFO L85 PathProgramCache]: Analyzing trace with hash 2105370958, now seen corresponding path program 1 times [2021-11-09 08:31:18,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:18,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [892988305] [2021-11-09 08:31:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:18,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:18,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:18,504 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:18,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-09 08:31:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:19,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-09 08:31:19,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:19,525 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 08:31:19,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:19,728 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 08:31:19,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:19,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [892988305] [2021-11-09 08:31:19,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [892988305] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-09 08:31:19,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-09 08:31:19,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-09 08:31:19,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824167757] [2021-11-09 08:31:19,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-09 08:31:19,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-09 08:31:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-09 08:31:19,730 INFO L87 Difference]: Start difference. First operand 1008 states and 1140 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 08:31:19,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:19,859 INFO L93 Difference]: Finished difference Result 1018 states and 1153 transitions. [2021-11-09 08:31:19,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-09 08:31:19,861 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 08:31:19,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:19,869 INFO L225 Difference]: With dead ends: 1018 [2021-11-09 08:31:19,869 INFO L226 Difference]: Without dead ends: 1018 [2021-11-09 08:31:19,870 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 08:31:19,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-09 08:31:19,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 1018. [2021-11-09 08:31:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 657 states have (on average 1.7184170471841704) internal successors, (1129), 1005 states have internal predecessors, (1129), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 08:31:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1153 transitions. [2021-11-09 08:31:19,918 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1153 transitions. Word has length 77 [2021-11-09 08:31:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:19,919 INFO L470 AbstractCegarLoop]: Abstraction has 1018 states and 1153 transitions. [2021-11-09 08:31:19,919 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 08:31:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1153 transitions. [2021-11-09 08:31:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-09 08:31:19,920 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:19,920 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 08:31:19,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:20,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:20,136 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:31:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:20,136 INFO L85 PathProgramCache]: Analyzing trace with hash -221256690, now seen corresponding path program 1 times [2021-11-09 08:31:20,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:20,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911589846] [2021-11-09 08:31:20,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 08:31:20,137 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:20,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:20,139 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:20,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-09 08:31:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 08:31:20,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-09 08:31:20,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:21,001 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 08:31:21,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:21,407 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 08:31:21,408 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:21,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911589846] [2021-11-09 08:31:21,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911589846] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:31:21,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:21,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-09 08:31:21,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898779320] [2021-11-09 08:31:21,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-09 08:31:21,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-09 08:31:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-09 08:31:21,410 INFO L87 Difference]: Start difference. First operand 1018 states and 1153 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 08:31:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:21,915 INFO L93 Difference]: Finished difference Result 1032 states and 1171 transitions. [2021-11-09 08:31:21,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-09 08:31:21,917 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 08:31:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:21,922 INFO L225 Difference]: With dead ends: 1032 [2021-11-09 08:31:21,922 INFO L226 Difference]: Without dead ends: 1028 [2021-11-09 08:31:21,922 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:31:21,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2021-11-09 08:31:21,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1024. [2021-11-09 08:31:21,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 663 states have (on average 1.7149321266968325) internal successors, (1137), 1011 states have internal predecessors, (1137), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 08:31:21,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1161 transitions. [2021-11-09 08:31:21,940 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1161 transitions. Word has length 79 [2021-11-09 08:31:21,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:21,940 INFO L470 AbstractCegarLoop]: Abstraction has 1024 states and 1161 transitions. [2021-11-09 08:31:21,940 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 08:31:21,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1161 transitions. [2021-11-09 08:31:21,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-09 08:31:21,941 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:21,942 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 08:31:21,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:22,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:22,157 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:31:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:22,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1685730930, now seen corresponding path program 2 times [2021-11-09 08:31:22,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:22,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [361149080] [2021-11-09 08:31:22,158 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-09 08:31:22,158 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:22,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:22,159 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:22,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-09 08:31:23,032 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-09 08:31:23,032 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:23,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-09 08:31:23,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:23,368 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 08:31:23,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:24,007 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 08:31:24,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:24,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [361149080] [2021-11-09 08:31:24,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [361149080] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:31:24,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:24,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-09 08:31:24,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500337017] [2021-11-09 08:31:24,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-09 08:31:24,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:24,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-09 08:31:24,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-09 08:31:24,010 INFO L87 Difference]: Start difference. First operand 1024 states and 1161 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 08:31:25,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:25,720 INFO L93 Difference]: Finished difference Result 1052 states and 1199 transitions. [2021-11-09 08:31:25,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-09 08:31:25,721 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 08:31:25,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:25,728 INFO L225 Difference]: With dead ends: 1052 [2021-11-09 08:31:25,729 INFO L226 Difference]: Without dead ends: 1048 [2021-11-09 08:31:25,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-09 08:31:25,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1048 states. [2021-11-09 08:31:25,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1048 to 1036. [2021-11-09 08:31:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 675 states have (on average 1.7081481481481482) internal successors, (1153), 1023 states have internal predecessors, (1153), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 08:31:25,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1177 transitions. [2021-11-09 08:31:25,754 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1177 transitions. Word has length 83 [2021-11-09 08:31:25,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:25,755 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1177 transitions. [2021-11-09 08:31:25,755 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 08:31:25,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1177 transitions. [2021-11-09 08:31:25,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-09 08:31:25,756 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:25,756 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 08:31:25,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:25,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:25,975 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:31:25,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:25,975 INFO L85 PathProgramCache]: Analyzing trace with hash 17126542, now seen corresponding path program 3 times [2021-11-09 08:31:25,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:25,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120766573] [2021-11-09 08:31:25,976 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-09 08:31:25,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:25,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:25,978 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:26,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-09 08:31:27,319 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-09 08:31:27,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:27,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-09 08:31:27,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:27,979 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 08:31:27,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:30,172 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 08:31:30,173 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:30,173 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120766573] [2021-11-09 08:31:30,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120766573] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:31:30,174 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:30,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-09 08:31:30,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960923718] [2021-11-09 08:31:30,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-09 08:31:30,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:30,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-09 08:31:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-09 08:31:30,178 INFO L87 Difference]: Start difference. First operand 1036 states and 1177 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 08:31:39,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:31:39,439 INFO L93 Difference]: Finished difference Result 1092 states and 1261 transitions. [2021-11-09 08:31:39,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-09 08:31:39,440 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 08:31:39,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:31:39,446 INFO L225 Difference]: With dead ends: 1092 [2021-11-09 08:31:39,447 INFO L226 Difference]: Without dead ends: 1086 [2021-11-09 08:31:39,449 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 08:31:39,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2021-11-09 08:31:39,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1060. [2021-11-09 08:31:39,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 699 states have (on average 1.693848354792561) internal successors, (1184), 1047 states have internal predecessors, (1184), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 08:31:39,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1208 transitions. [2021-11-09 08:31:39,474 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1208 transitions. Word has length 91 [2021-11-09 08:31:39,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:31:39,475 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1208 transitions. [2021-11-09 08:31:39,475 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 08:31:39,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1208 transitions. [2021-11-09 08:31:39,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-09 08:31:39,477 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:31:39,477 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 08:31:39,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-09 08:31:39,696 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:31:39,697 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:31:39,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:31:39,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1658022542, now seen corresponding path program 4 times [2021-11-09 08:31:39,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:31:39,698 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238683709] [2021-11-09 08:31:39,698 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-09 08:31:39,698 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:31:39,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:31:39,699 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:31:39,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-09 08:31:40,496 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-09 08:31:40,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:31:40,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-09 08:31:40,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:31:42,007 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 08:31:42,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-09 08:31:47,124 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 08:31:47,125 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-09 08:31:47,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238683709] [2021-11-09 08:31:47,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238683709] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-09 08:31:47,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-09 08:31:47,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-09 08:31:47,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886422009] [2021-11-09 08:31:47,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-09 08:31:47,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-09 08:31:47,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-09 08:31:47,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-09 08:31:47,129 INFO L87 Difference]: Start difference. First operand 1060 states and 1208 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 08:32:04,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 08:32:04,410 INFO L93 Difference]: Finished difference Result 1152 states and 1328 transitions. [2021-11-09 08:32:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-09 08:32:04,411 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 08:32:04,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 08:32:04,418 INFO L225 Difference]: With dead ends: 1152 [2021-11-09 08:32:04,418 INFO L226 Difference]: Without dead ends: 1148 [2021-11-09 08:32:04,426 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2315 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-09 08:32:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-11-09 08:32:04,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1090. [2021-11-09 08:32:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 729 states have (on average 1.6872427983539096) internal successors, (1230), 1077 states have internal predecessors, (1230), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 7 states have call predecessors, (12), 11 states have call successors, (12) [2021-11-09 08:32:04,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1254 transitions. [2021-11-09 08:32:04,457 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1254 transitions. Word has length 107 [2021-11-09 08:32:04,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 08:32:04,458 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 1254 transitions. [2021-11-09 08:32:04,458 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 08:32:04,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1254 transitions. [2021-11-09 08:32:04,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-09 08:32:04,459 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 08:32:04,460 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 08:32:04,490 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-09 08:32:04,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 [2021-11-09 08:32:04,678 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting mainErr80REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 532 more)] === [2021-11-09 08:32:04,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 08:32:04,679 INFO L85 PathProgramCache]: Analyzing trace with hash 706749902, now seen corresponding path program 5 times [2021-11-09 08:32:04,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-09 08:32:04,680 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [223140805] [2021-11-09 08:32:04,680 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-09 08:32:04,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-09 08:32:04,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat [2021-11-09 08:32:04,681 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-09 08:32:04,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_48d19c5a-b239-41a7-9fea-191c0fc335a9/bin/uautomizer-IVEQpCNsaX/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-09 08:32:06,582 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-09 08:32:06,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-09 08:32:06,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-09 08:32:06,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-09 08:32:06,638 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 08:32:06,906 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-09 08:32:06,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 27 [2021-11-09 08:32:06,957 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 22 [2021-11-09 08:32:07,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 24