./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL --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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:10:06,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:10:06,225 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:10:06,287 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:10:06,288 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:10:06,290 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:10:06,292 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:10:06,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:10:06,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:10:06,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:10:06,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:10:06,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:10:06,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:10:06,305 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:10:06,307 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:10:06,309 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:10:06,310 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:10:06,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:10:06,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:10:06,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:10:06,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:10:06,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:10:06,323 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:10:06,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:10:06,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:10:06,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:10:06,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:10:06,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:10:06,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:10:06,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:10:06,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:10:06,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:10:06,337 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:10:06,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:10:06,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:10:06,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:10:06,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:10:06,341 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:10:06,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:10:06,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:10:06,343 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:10:06,344 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 04:10:06,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:10:06,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:10:06,370 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:10:06,371 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:10:06,371 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:10:06,372 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:10:06,373 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:10:06,373 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:10:06,373 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:10:06,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:10:06,374 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:10:06,374 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:10:06,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:10:06,375 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:10:06,375 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:10:06,375 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:10:06,375 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:10:06,375 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:10:06,376 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:10:06,376 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:10:06,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:10:06,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:10:06,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:10:06,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:10:06,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:10:06,378 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:10:06,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:10:06,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:10:06,378 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:10:06,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:10:06,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:10:06,379 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_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-11-19 04:10:06,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:10:06,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:10:06,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:10:06,706 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:10:06,707 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:10:06,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-19 04:10:06,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/2dca1abfb/c7c41993f0ee45b6954dc7bb105fa00f/FLAG9f23be74f [2021-11-19 04:10:07,588 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:10:07,589 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-19 04:10:07,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/2dca1abfb/c7c41993f0ee45b6954dc7bb105fa00f/FLAG9f23be74f [2021-11-19 04:10:07,750 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/2dca1abfb/c7c41993f0ee45b6954dc7bb105fa00f [2021-11-19 04:10:07,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:10:07,764 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:10:07,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:10:07,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:10:07,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:10:07,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:07" (1/1) ... [2021-11-19 04:10:07,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54bd18eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:07, skipping insertion in model container [2021-11-19 04:10:07,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:07" (1/1) ... [2021-11-19 04:10:07,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:10:07,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:10:08,312 WARN L230 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_eb8ee3e2-81f9-446e-983f-1d57691524fa/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-19 04:10:08,619 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:10:08,630 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) [2021-11-19 04:10:08,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2fbb29c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:08, skipping insertion in model container [2021-11-19 04:10:08,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:10:08,632 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 04:10:08,634 INFO L158 Benchmark]: Toolchain (without parser) took 869.39ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 55.4MB in the beginning and 103.8MB in the end (delta: -48.4MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-19 04:10:08,635 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 92.3MB. Free memory was 65.3MB in the beginning and 65.3MB in the end (delta: 29.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:10:08,636 INFO L158 Benchmark]: CACSL2BoogieTranslator took 865.60ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 55.3MB in the beginning and 103.8MB in the end (delta: -48.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-11-19 04:10:08,638 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 92.3MB. Free memory was 65.3MB in the beginning and 65.3MB in the end (delta: 29.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 865.60ms. Allocated memory was 92.3MB in the beginning and 146.8MB in the end (delta: 54.5MB). Free memory was 55.3MB in the beginning and 103.8MB in the end (delta: -48.6MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL --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 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:10:10,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:10:10,936 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:10:10,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:10:10,968 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:10:10,970 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:10:10,972 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:10:10,974 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:10:10,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:10:10,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:10:10,978 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:10:10,980 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:10:10,980 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:10:10,981 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:10:10,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:10:10,985 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:10:10,986 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:10:10,987 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:10:10,989 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:10:10,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:10:10,993 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:10:10,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:10:10,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:10:10,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:10:11,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:10:11,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:10:11,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:10:11,003 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:10:11,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:10:11,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:10:11,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:10:11,006 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:10:11,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:10:11,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:10:11,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:10:11,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:10:11,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:10:11,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:10:11,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:10:11,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:10:11,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:10:11,018 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 04:10:11,067 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:10:11,067 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:10:11,068 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:10:11,068 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:10:11,069 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:10:11,069 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:10:11,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:10:11,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:10:11,071 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:10:11,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:10:11,072 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:10:11,073 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 04:10:11,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:10:11,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:10:11,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:10:11,073 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 04:10:11,074 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 04:10:11,074 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 04:10:11,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:10:11,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 04:10:11,074 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 04:10:11,075 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 04:10:11,075 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:10:11,075 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:10:11,075 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:10:11,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:10:11,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:10:11,076 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:10:11,076 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:10:11,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:10:11,076 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 04:10:11,077 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 04:10:11,077 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:10:11,077 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 04:10:11,077 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_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cc62483e7301c05d7788622f4f3fa5962cd13b8481778ecaf6adfc0416e51e [2021-11-19 04:10:11,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:10:11,525 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:10:11,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:10:11,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:10:11,531 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:10:11,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-19 04:10:11,612 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/2dd66c65d/b5cfd3eec63341b2b67e7bfc91729f4b/FLAG759918f0f [2021-11-19 04:10:12,430 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:10:12,431 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i [2021-11-19 04:10:12,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/2dd66c65d/b5cfd3eec63341b2b67e7bfc91729f4b/FLAG759918f0f [2021-11-19 04:10:12,535 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/data/2dd66c65d/b5cfd3eec63341b2b67e7bfc91729f4b [2021-11-19 04:10:12,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:10:12,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 04:10:12,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:10:12,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:10:12,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:10:12,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:12" (1/1) ... [2021-11-19 04:10:12,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bc6aa0f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:12, skipping insertion in model container [2021-11-19 04:10:12,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:12" (1/1) ... [2021-11-19 04:10:12,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:10:12,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:10:13,102 WARN L230 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_eb8ee3e2-81f9-446e-983f-1d57691524fa/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-19 04:10:13,368 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:10:13,380 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 04:10:13,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:10:13,420 WARN L230 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_eb8ee3e2-81f9-446e-983f-1d57691524fa/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-19 04:10:13,666 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:10:13,673 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:10:13,712 WARN L230 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_eb8ee3e2-81f9-446e-983f-1d57691524fa/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test10-3.i[33022,33035] [2021-11-19 04:10:13,866 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:10:13,926 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:10:13,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13 WrapperNode [2021-11-19 04:10:13,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:10:13,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:10:13,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:10:13,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:10:13,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:13,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:14,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:14,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:14,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:14,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:14,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:14,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:10:14,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:10:14,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:10:14,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:10:14,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (1/1) ... [2021-11-19 04:10:14,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:10:14,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:10:14,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:10:14,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:10:14,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 04:10:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:10:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:10:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 04:10:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 04:10:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 04:10:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 04:10:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 04:10:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-19 04:10:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:10:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-19 04:10:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 04:10:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 04:10:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-19 04:10:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-19 04:10:14,321 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-19 04:10:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-19 04:10:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 04:10:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-19 04:10:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-19 04:10:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-19 04:10:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-19 04:10:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-19 04:10:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-19 04:10:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-19 04:10:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-19 04:10:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-19 04:10:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 04:10:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 04:10:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 04:10:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 04:10:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 04:10:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 04:10:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 04:10:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 04:10:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 04:10:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 04:10:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 04:10:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 04:10:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-19 04:10:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 04:10:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 04:10:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 04:10:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 04:10:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:10:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 04:10:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-19 04:10:14,886 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:10:14,887 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:10:15,001 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-19 04:10:25,302 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:10:25,333 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:10:25,333 INFO L301 CfgBuilder]: Removed 168 assume(true) statements. [2021-11-19 04:10:25,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:25 BoogieIcfgContainer [2021-11-19 04:10:25,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:10:25,341 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:10:25,341 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:10:25,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:10:25,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:10:12" (1/3) ... [2021-11-19 04:10:25,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103c363d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:25, skipping insertion in model container [2021-11-19 04:10:25,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:13" (2/3) ... [2021-11-19 04:10:25,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103c363d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:25, skipping insertion in model container [2021-11-19 04:10:25,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:25" (3/3) ... [2021-11-19 04:10:25,348 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test10-3.i [2021-11-19 04:10:25,353 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:10:25,354 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2021-11-19 04:10:25,404 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:10:25,411 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 [2021-11-19 04:10:25,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2021-11-19 04:10:25,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 2442 states, 1233 states have (on average 2.227088402270884) internal successors, (2746), 2424 states have internal predecessors, (2746), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-19 04:10:25,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:10:25,484 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:25,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:25,485 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:25,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1848007294, now seen corresponding path program 1 times [2021-11-19 04:10:25,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:25,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2147419322] [2021-11-19 04:10:25,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:25,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:25,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:25,518 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:25,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 04:10:25,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:25,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:10:25,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:25,924 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 [2021-11-19 04:10:25,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:25,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:25,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:25,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2147419322] [2021-11-19 04:10:25,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2147419322] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:26,000 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:26,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:10:26,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29175183] [2021-11-19 04:10:26,002 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:26,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:10:26,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:26,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:10:26,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:10:26,041 INFO L87 Difference]: Start difference. First operand has 2442 states, 1233 states have (on average 2.227088402270884) internal successors, (2746), 2424 states have internal predecessors, (2746), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) 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) [2021-11-19 04:10:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:30,764 INFO L93 Difference]: Finished difference Result 3286 states and 3488 transitions. [2021-11-19 04:10:30,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:10:30,768 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 [2021-11-19 04:10:30,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:30,807 INFO L225 Difference]: With dead ends: 3286 [2021-11-19 04:10:30,807 INFO L226 Difference]: Without dead ends: 3283 [2021-11-19 04:10:30,809 INFO L932 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 [2021-11-19 04:10:30,812 INFO L933 BasicCegarLoop]: 1670 mSDtfsCounter, 2318 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 1684 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:30,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2328 Valid, 2240 Invalid, 1684 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2021-11-19 04:10:30,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3283 states. [2021-11-19 04:10:30,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3283 to 2583. [2021-11-19 04:10:30,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2583 states, 1399 states have (on average 2.0664760543245175) internal successors, (2891), 2564 states have internal predecessors, (2891), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:10:30,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2583 states to 2583 states and 2926 transitions. [2021-11-19 04:10:30,998 INFO L78 Accepts]: Start accepts. Automaton has 2583 states and 2926 transitions. Word has length 7 [2021-11-19 04:10:30,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:30,999 INFO L470 AbstractCegarLoop]: Abstraction has 2583 states and 2926 transitions. [2021-11-19 04:10:30,999 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) [2021-11-19 04:10:30,999 INFO L276 IsEmpty]: Start isEmpty. Operand 2583 states and 2926 transitions. [2021-11-19 04:10:31,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:10:31,000 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:31,000 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:31,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 04:10:31,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:10:31,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:31,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:31,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1848007293, now seen corresponding path program 1 times [2021-11-19 04:10:31,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:31,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1012161687] [2021-11-19 04:10:31,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:31,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:31,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:31,216 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:31,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 04:10:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:31,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:10:31,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:31,469 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 [2021-11-19 04:10:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:31,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:31,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:31,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:31,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1012161687] [2021-11-19 04:10:31,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1012161687] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:31,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:31,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:10:31,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406211739] [2021-11-19 04:10:31,569 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:31,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:10:31,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:10:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:10:31,572 INFO L87 Difference]: Start difference. First operand 2583 states and 2926 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) [2021-11-19 04:10:42,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:42,336 INFO L93 Difference]: Finished difference Result 4061 states and 4523 transitions. [2021-11-19 04:10:42,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:10:42,337 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 [2021-11-19 04:10:42,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:42,358 INFO L225 Difference]: With dead ends: 4061 [2021-11-19 04:10:42,358 INFO L226 Difference]: Without dead ends: 4061 [2021-11-19 04:10:42,358 INFO L932 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 [2021-11-19 04:10:42,360 INFO L933 BasicCegarLoop]: 1780 mSDtfsCounter, 4282 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4290 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 2136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:42,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4290 Valid, 3361 Invalid, 2136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2021-11-19 04:10:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2021-11-19 04:10:42,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 2747. [2021-11-19 04:10:42,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2747 states, 1575 states have (on average 2.0526984126984127) internal successors, (3233), 2728 states have internal predecessors, (3233), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:10:42,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2747 states to 2747 states and 3268 transitions. [2021-11-19 04:10:42,442 INFO L78 Accepts]: Start accepts. Automaton has 2747 states and 3268 transitions. Word has length 7 [2021-11-19 04:10:42,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:42,442 INFO L470 AbstractCegarLoop]: Abstraction has 2747 states and 3268 transitions. [2021-11-19 04:10:42,442 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) [2021-11-19 04:10:42,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2747 states and 3268 transitions. [2021-11-19 04:10:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:10:42,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:42,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:42,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:10:42,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:10:42,655 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr6REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:42,655 INFO L85 PathProgramCache]: Analyzing trace with hash 515316259, now seen corresponding path program 1 times [2021-11-19 04:10:42,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:42,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451745331] [2021-11-19 04:10:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:42,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:42,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:42,658 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:42,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 04:10:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:42,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:10:42,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:42,874 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 [2021-11-19 04:10:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:42,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:42,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:42,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:42,918 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451745331] [2021-11-19 04:10:42,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451745331] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:42,919 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:42,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 04:10:42,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042696117] [2021-11-19 04:10:42,919 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:42,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:10:42,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:42,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:10:42,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:10:42,921 INFO L87 Difference]: Start difference. First operand 2747 states and 3268 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) [2021-11-19 04:10:46,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:46,791 INFO L93 Difference]: Finished difference Result 3485 states and 4006 transitions. [2021-11-19 04:10:46,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:10:46,792 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 [2021-11-19 04:10:46,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:46,811 INFO L225 Difference]: With dead ends: 3485 [2021-11-19 04:10:46,811 INFO L226 Difference]: Without dead ends: 3485 [2021-11-19 04:10:46,812 INFO L932 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 [2021-11-19 04:10:46,813 INFO L933 BasicCegarLoop]: 2351 mSDtfsCounter, 1987 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1577 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1997 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:46,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1997 Valid, 3193 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1577 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-19 04:10:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3485 states. [2021-11-19 04:10:46,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3485 to 2656. [2021-11-19 04:10:46,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2656 states, 1575 states have (on average 1.9733333333333334) internal successors, (3108), 2637 states have internal predecessors, (3108), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:10:46,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2656 states to 2656 states and 3143 transitions. [2021-11-19 04:10:46,883 INFO L78 Accepts]: Start accepts. Automaton has 2656 states and 3143 transitions. Word has length 12 [2021-11-19 04:10:46,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:46,884 INFO L470 AbstractCegarLoop]: Abstraction has 2656 states and 3143 transitions. [2021-11-19 04:10:46,884 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) [2021-11-19 04:10:46,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2656 states and 3143 transitions. [2021-11-19 04:10:46,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-19 04:10:46,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:46,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:46,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:10:47,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:10:47,098 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr7REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:47,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:47,100 INFO L85 PathProgramCache]: Analyzing trace with hash 515316260, now seen corresponding path program 1 times [2021-11-19 04:10:47,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:47,103 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1237900155] [2021-11-19 04:10:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:47,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:47,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:47,111 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:47,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 04:10:47,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:47,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:10:47,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:47,376 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 [2021-11-19 04:10:47,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:47,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:47,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:47,511 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:47,511 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1237900155] [2021-11-19 04:10:47,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1237900155] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:47,512 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:47,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-19 04:10:47,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802441903] [2021-11-19 04:10:47,512 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:47,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:10:47,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:47,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:10:47,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:10:47,514 INFO L87 Difference]: Start difference. First operand 2656 states and 3143 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) [2021-11-19 04:10:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:57,354 INFO L93 Difference]: Finished difference Result 3611 states and 4034 transitions. [2021-11-19 04:10:57,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:10:57,355 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 [2021-11-19 04:10:57,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:57,373 INFO L225 Difference]: With dead ends: 3611 [2021-11-19 04:10:57,373 INFO L226 Difference]: Without dead ends: 3611 [2021-11-19 04:10:57,374 INFO L932 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 [2021-11-19 04:10:57,375 INFO L933 BasicCegarLoop]: 2681 mSDtfsCounter, 1441 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 2776 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1447 SdHoareTripleChecker+Valid, 5041 SdHoareTripleChecker+Invalid, 2803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:57,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1447 Valid, 5041 Invalid, 2803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2776 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2021-11-19 04:10:57,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2021-11-19 04:10:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2648. [2021-11-19 04:10:57,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 1577 states have (on average 1.9581483830057071) internal successors, (3088), 2629 states have internal predecessors, (3088), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:10:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 3123 transitions. [2021-11-19 04:10:57,441 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 3123 transitions. Word has length 12 [2021-11-19 04:10:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:57,442 INFO L470 AbstractCegarLoop]: Abstraction has 2648 states and 3123 transitions. [2021-11-19 04:10:57,442 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) [2021-11-19 04:10:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 3123 transitions. [2021-11-19 04:10:57,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 04:10:57,443 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:57,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:57,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-11-19 04:10:57,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:10:57,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr658REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:57,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:57,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1098922193, now seen corresponding path program 1 times [2021-11-19 04:10:57,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:57,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1402966138] [2021-11-19 04:10:57,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:57,658 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:57,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:57,659 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:57,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 04:10:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:57,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:10:57,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:57,902 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:57,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:57,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:57,944 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1402966138] [2021-11-19 04:10:57,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1402966138] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:57,944 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:57,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:10:57,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868688168] [2021-11-19 04:10:57,945 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:57,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:10:57,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:10:57,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:10:57,946 INFO L87 Difference]: Start difference. First operand 2648 states and 3123 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:10:57,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:57,996 INFO L93 Difference]: Finished difference Result 2606 states and 3080 transitions. [2021-11-19 04:10:57,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:10:57,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 04:10:57,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:58,012 INFO L225 Difference]: With dead ends: 2606 [2021-11-19 04:10:58,012 INFO L226 Difference]: Without dead ends: 2606 [2021-11-19 04:10:58,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:10:58,013 INFO L933 BasicCegarLoop]: 2400 mSDtfsCounter, 2384 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:58,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2388 Valid, 3615 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:10:58,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-11-19 04:10:58,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 2606. [2021-11-19 04:10:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 1559 states have (on average 1.9531751122514431) internal successors, (3045), 2587 states have internal predecessors, (3045), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:10:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3080 transitions. [2021-11-19 04:10:58,079 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3080 transitions. Word has length 15 [2021-11-19 04:10:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:58,080 INFO L470 AbstractCegarLoop]: Abstraction has 2606 states and 3080 transitions. [2021-11-19 04:10:58,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:10:58,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3080 transitions. [2021-11-19 04:10:58,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-19 04:10:58,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:58,081 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:10:58,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 04:10:58,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:10:58,292 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr682REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:58,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash -497671989, now seen corresponding path program 1 times [2021-11-19 04:10:58,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:58,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2071134780] [2021-11-19 04:10:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:58,293 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:58,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:58,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:58,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 04:10:58,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:58,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:10:58,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:58,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:58,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:58,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2071134780] [2021-11-19 04:10:58,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2071134780] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:58,570 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:58,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:10:58,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760473993] [2021-11-19 04:10:58,571 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:58,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:10:58,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:58,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:10:58,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:10:58,572 INFO L87 Difference]: Start difference. First operand 2606 states and 3080 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:10:58,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:58,648 INFO L93 Difference]: Finished difference Result 2585 states and 3052 transitions. [2021-11-19 04:10:58,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:10:58,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-11-19 04:10:58,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:58,661 INFO L225 Difference]: With dead ends: 2585 [2021-11-19 04:10:58,661 INFO L226 Difference]: Without dead ends: 2585 [2021-11-19 04:10:58,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:10:58,662 INFO L933 BasicCegarLoop]: 2355 mSDtfsCounter, 1163 mSDsluCounter, 4779 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 7134 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:58,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 7134 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:10:58,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2585 states. [2021-11-19 04:10:58,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2585 to 2584. [2021-11-19 04:10:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2584 states, 1551 states have (on average 1.9445519019987105) internal successors, (3016), 2565 states have internal predecessors, (3016), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:10:58,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2584 states to 2584 states and 3051 transitions. [2021-11-19 04:10:58,734 INFO L78 Accepts]: Start accepts. Automaton has 2584 states and 3051 transitions. Word has length 17 [2021-11-19 04:10:58,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:58,735 INFO L470 AbstractCegarLoop]: Abstraction has 2584 states and 3051 transitions. [2021-11-19 04:10:58,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:10:58,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2584 states and 3051 transitions. [2021-11-19 04:10:58,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 04:10:58,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:58,736 INFO L514 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] [2021-11-19 04:10:58,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 04:10:58,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:10:58,948 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr334REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:58,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:58,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2032047504, now seen corresponding path program 1 times [2021-11-19 04:10:58,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:58,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36416249] [2021-11-19 04:10:58,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:58,949 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:58,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:58,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:58,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 04:10:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:59,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:10:59,172 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:59,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:59,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:59,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:59,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36416249] [2021-11-19 04:10:59,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36416249] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:59,255 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:59,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:10:59,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448180761] [2021-11-19 04:10:59,255 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:59,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:10:59,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:59,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:10:59,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:10:59,256 INFO L87 Difference]: Start difference. First operand 2584 states and 3051 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-19 04:10:59,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:59,345 INFO L93 Difference]: Finished difference Result 4195 states and 4766 transitions. [2021-11-19 04:10:59,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:10:59,346 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 [2021-11-19 04:10:59,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:59,367 INFO L225 Difference]: With dead ends: 4195 [2021-11-19 04:10:59,368 INFO L226 Difference]: Without dead ends: 4195 [2021-11-19 04:10:59,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:10:59,369 INFO L933 BasicCegarLoop]: 3857 mSDtfsCounter, 4554 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4564 SdHoareTripleChecker+Valid, 5659 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:10:59,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4564 Valid, 5659 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:10:59,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4195 states. [2021-11-19 04:10:59,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4195 to 2506. [2021-11-19 04:10:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2506 states, 1497 states have (on average 1.9285237140948563) internal successors, (2887), 2487 states have internal predecessors, (2887), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:10:59,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2506 states to 2506 states and 2922 transitions. [2021-11-19 04:10:59,428 INFO L78 Accepts]: Start accepts. Automaton has 2506 states and 2922 transitions. Word has length 24 [2021-11-19 04:10:59,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:10:59,428 INFO L470 AbstractCegarLoop]: Abstraction has 2506 states and 2922 transitions. [2021-11-19 04:10:59,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-19 04:10:59,429 INFO L276 IsEmpty]: Start isEmpty. Operand 2506 states and 2922 transitions. [2021-11-19 04:10:59,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 04:10:59,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:10:59,430 INFO L514 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] [2021-11-19 04:10:59,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 04:10:59,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:10:59,642 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr16REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:10:59,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:10:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2117616112, now seen corresponding path program 1 times [2021-11-19 04:10:59,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:10:59,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830654271] [2021-11-19 04:10:59,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:10:59,643 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:10:59,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:10:59,644 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:10:59,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 04:10:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:10:59,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-19 04:10:59,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:10:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:59,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:10:59,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:10:59,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:10:59,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830654271] [2021-11-19 04:10:59,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830654271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:10:59,934 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:10:59,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-19 04:10:59,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124900970] [2021-11-19 04:10:59,934 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:10:59,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:10:59,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:10:59,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:10:59,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:10:59,935 INFO L87 Difference]: Start difference. First operand 2506 states and 2922 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-19 04:10:59,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:10:59,980 INFO L93 Difference]: Finished difference Result 4118 states and 4689 transitions. [2021-11-19 04:10:59,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:10:59,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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 [2021-11-19 04:10:59,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:10:59,999 INFO L225 Difference]: With dead ends: 4118 [2021-11-19 04:10:59,999 INFO L226 Difference]: Without dead ends: 4118 [2021-11-19 04:10:59,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:11:00,000 INFO L933 BasicCegarLoop]: 3777 mSDtfsCounter, 2234 mSDsluCounter, 3532 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2244 SdHoareTripleChecker+Valid, 7309 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:00,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2244 Valid, 7309 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:11:00,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4118 states. [2021-11-19 04:11:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4118 to 2464. [2021-11-19 04:11:00,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2464 states, 1479 states have (on average 1.922920892494929) internal successors, (2844), 2445 states have internal predecessors, (2844), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2464 states to 2464 states and 2879 transitions. [2021-11-19 04:11:00,074 INFO L78 Accepts]: Start accepts. Automaton has 2464 states and 2879 transitions. Word has length 24 [2021-11-19 04:11:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:00,075 INFO L470 AbstractCegarLoop]: Abstraction has 2464 states and 2879 transitions. [2021-11-19 04:11:00,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 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) [2021-11-19 04:11:00,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2464 states and 2879 transitions. [2021-11-19 04:11:00,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 04:11:00,076 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:00,076 INFO L514 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] [2021-11-19 04:11:00,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:00,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:00,289 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr358REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:00,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:00,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1412495274, now seen corresponding path program 1 times [2021-11-19 04:11:00,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:00,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922672841] [2021-11-19 04:11:00,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:00,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:00,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:00,293 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:00,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 04:11:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:00,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:11:00,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:00,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:00,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:00,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:11:00,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922672841] [2021-11-19 04:11:00,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922672841] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:00,681 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:00,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:11:00,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133543348] [2021-11-19 04:11:00,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:00,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:11:00,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:11:00,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:11:00,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:11:00,683 INFO L87 Difference]: Start difference. First operand 2464 states and 2879 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-19 04:11:00,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:00,827 INFO L93 Difference]: Finished difference Result 4076 states and 4596 transitions. [2021-11-19 04:11:00,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:11:00,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-11-19 04:11:00,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:00,842 INFO L225 Difference]: With dead ends: 4076 [2021-11-19 04:11:00,842 INFO L226 Difference]: Without dead ends: 4076 [2021-11-19 04:11:00,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:11:00,843 INFO L933 BasicCegarLoop]: 3948 mSDtfsCounter, 4400 mSDsluCounter, 5701 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4410 SdHoareTripleChecker+Valid, 9649 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:00,843 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4410 Valid, 9649 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:11:00,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2021-11-19 04:11:00,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 2426. [2021-11-19 04:11:00,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1455 states have (on average 1.8948453608247422) internal successors, (2757), 2407 states have internal predecessors, (2757), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:00,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 2792 transitions. [2021-11-19 04:11:00,896 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 2792 transitions. Word has length 26 [2021-11-19 04:11:00,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:00,897 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 2792 transitions. [2021-11-19 04:11:00,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-19 04:11:00,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 2792 transitions. [2021-11-19 04:11:00,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 04:11:00,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:00,898 INFO L514 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] [2021-11-19 04:11:00,913 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:01,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:01,110 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr40REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:01,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:01,111 INFO L85 PathProgramCache]: Analyzing trace with hash -785415766, now seen corresponding path program 1 times [2021-11-19 04:11:01,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:01,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358822925] [2021-11-19 04:11:01,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:01,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:01,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:01,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:01,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 04:11:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:01,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:11:01,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:01,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:01,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:01,458 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:11:01,458 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358822925] [2021-11-19 04:11:01,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358822925] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:01,458 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:01,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 04:11:01,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957224806] [2021-11-19 04:11:01,459 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:01,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:11:01,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:11:01,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:11:01,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:11:01,460 INFO L87 Difference]: Start difference. First operand 2426 states and 2792 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-19 04:11:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:01,611 INFO L93 Difference]: Finished difference Result 4037 states and 4545 transitions. [2021-11-19 04:11:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:11:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2021-11-19 04:11:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:01,622 INFO L225 Difference]: With dead ends: 4037 [2021-11-19 04:11:01,622 INFO L226 Difference]: Without dead ends: 4037 [2021-11-19 04:11:01,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:11:01,624 INFO L933 BasicCegarLoop]: 3662 mSDtfsCounter, 4330 mSDsluCounter, 5387 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4340 SdHoareTripleChecker+Valid, 9049 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:01,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4340 Valid, 9049 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:11:01,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4037 states. [2021-11-19 04:11:01,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4037 to 2404. [2021-11-19 04:11:01,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1447 states have (on average 1.8852798894263993) internal successors, (2728), 2385 states have internal predecessors, (2728), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:01,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 2763 transitions. [2021-11-19 04:11:01,700 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 2763 transitions. Word has length 26 [2021-11-19 04:11:01,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:01,700 INFO L470 AbstractCegarLoop]: Abstraction has 2404 states and 2763 transitions. [2021-11-19 04:11:01,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 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) [2021-11-19 04:11:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 2763 transitions. [2021-11-19 04:11:01,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:11:01,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:01,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:11:01,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:01,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:01,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr696REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:01,907 INFO L85 PathProgramCache]: Analyzing trace with hash -253561191, now seen corresponding path program 1 times [2021-11-19 04:11:01,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:01,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [217228522] [2021-11-19 04:11:01,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:01,908 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:01,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:01,909 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:01,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 04:11:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:02,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:11:02,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:02,161 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 [2021-11-19 04:11:02,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:02,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:02,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:02,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:11:02,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [217228522] [2021-11-19 04:11:02,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [217228522] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:02,393 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:02,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:11:02,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125959494] [2021-11-19 04:11:02,393 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:02,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:11:02,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:11:02,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:11:02,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:11:02,394 INFO L87 Difference]: Start difference. First operand 2404 states and 2763 transitions. Second operand has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:11:06,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:06,616 INFO L93 Difference]: Finished difference Result 3025 states and 3303 transitions. [2021-11-19 04:11:06,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:11:06,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:11:06,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:06,622 INFO L225 Difference]: With dead ends: 3025 [2021-11-19 04:11:06,623 INFO L226 Difference]: Without dead ends: 3025 [2021-11-19 04:11:06,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:11:06,624 INFO L933 BasicCegarLoop]: 1518 mSDtfsCounter, 3081 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2065 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3087 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:06,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3087 Valid, 2803 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2065 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-11-19 04:11:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3025 states. [2021-11-19 04:11:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3025 to 2400. [2021-11-19 04:11:06,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1447 states have (on average 1.8825155494125778) internal successors, (2724), 2381 states have internal predecessors, (2724), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:06,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 2759 transitions. [2021-11-19 04:11:06,662 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 2759 transitions. Word has length 31 [2021-11-19 04:11:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:06,662 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 2759 transitions. [2021-11-19 04:11:06,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.333333333333334) internal successors, (28), 4 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:11:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 2759 transitions. [2021-11-19 04:11:06,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-19 04:11:06,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:06,664 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:11:06,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:06,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:06,875 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr697REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:06,876 INFO L85 PathProgramCache]: Analyzing trace with hash -253561190, now seen corresponding path program 1 times [2021-11-19 04:11:06,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:06,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659553267] [2021-11-19 04:11:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:06,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:06,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:06,878 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:06,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 04:11:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:07,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:11:07,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:07,131 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 [2021-11-19 04:11:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:07,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:07,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:07,816 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:11:07,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659553267] [2021-11-19 04:11:07,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659553267] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:07,816 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:07,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:11:07,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826196675] [2021-11-19 04:11:07,816 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:07,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:11:07,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:11:07,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:11:07,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:11:07,818 INFO L87 Difference]: Start difference. First operand 2400 states and 2759 transitions. Second operand has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-11-19 04:11:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:23,708 INFO L93 Difference]: Finished difference Result 3575 states and 3928 transitions. [2021-11-19 04:11:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:11:23,709 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-19 04:11:23,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:23,716 INFO L225 Difference]: With dead ends: 3575 [2021-11-19 04:11:23,717 INFO L226 Difference]: Without dead ends: 3575 [2021-11-19 04:11:23,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:11:23,718 INFO L933 BasicCegarLoop]: 1579 mSDtfsCounter, 6071 mSDsluCounter, 2986 mSDsCounter, 0 mSdLazyCounter, 3394 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6071 SdHoareTripleChecker+Valid, 4565 SdHoareTripleChecker+Invalid, 3422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 3394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:23,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6071 Valid, 4565 Invalid, 3422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 3394 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2021-11-19 04:11:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-11-19 04:11:23,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 2433. [2021-11-19 04:11:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2433 states, 1481 states have (on average 1.8642808912896691) internal successors, (2761), 2414 states have internal predecessors, (2761), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:23,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2433 states to 2433 states and 2796 transitions. [2021-11-19 04:11:23,757 INFO L78 Accepts]: Start accepts. Automaton has 2433 states and 2796 transitions. Word has length 31 [2021-11-19 04:11:23,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:23,758 INFO L470 AbstractCegarLoop]: Abstraction has 2433 states and 2796 transitions. [2021-11-19 04:11:23,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.8) internal successors, (54), 6 states have internal predecessors, (54), 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) [2021-11-19 04:11:23,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2433 states and 2796 transitions. [2021-11-19 04:11:23,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 04:11:23,759 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:23,760 INFO L514 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] [2021-11-19 04:11:23,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:23,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:23,971 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr372REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:23,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:23,972 INFO L85 PathProgramCache]: Analyzing trace with hash 926454328, now seen corresponding path program 1 times [2021-11-19 04:11:23,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:23,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [638305483] [2021-11-19 04:11:23,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:23,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:23,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:23,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:24,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 04:11:24,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:24,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:11:24,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:24,269 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 [2021-11-19 04:11:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:24,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:24,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:24,519 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:11:24,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [638305483] [2021-11-19 04:11:24,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [638305483] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:24,519 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:24,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:11:24,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535882669] [2021-11-19 04:11:24,520 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:24,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:11:24,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:11:24,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:11:24,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:11:24,521 INFO L87 Difference]: Start difference. First operand 2433 states and 2796 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-19 04:11:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:31,276 INFO L93 Difference]: Finished difference Result 5058 states and 5640 transitions. [2021-11-19 04:11:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:11:31,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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 40 [2021-11-19 04:11:31,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:31,285 INFO L225 Difference]: With dead ends: 5058 [2021-11-19 04:11:31,286 INFO L226 Difference]: Without dead ends: 5058 [2021-11-19 04:11:31,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:11:31,287 INFO L933 BasicCegarLoop]: 2533 mSDtfsCounter, 4845 mSDsluCounter, 2573 mSDsCounter, 0 mSdLazyCounter, 3354 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4855 SdHoareTripleChecker+Valid, 5106 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 3354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:31,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4855 Valid, 5106 Invalid, 3405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 3354 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-19 04:11:31,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5058 states. [2021-11-19 04:11:31,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5058 to 2430. [2021-11-19 04:11:31,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 1481 states have (on average 1.8568534773801486) internal successors, (2750), 2411 states have internal predecessors, (2750), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:31,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 2785 transitions. [2021-11-19 04:11:31,362 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 2785 transitions. Word has length 40 [2021-11-19 04:11:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:31,362 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 2785 transitions. [2021-11-19 04:11:31,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-19 04:11:31,363 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 2785 transitions. [2021-11-19 04:11:31,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 04:11:31,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:31,363 INFO L514 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] [2021-11-19 04:11:31,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:31,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:31,564 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr373REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:31,565 INFO L85 PathProgramCache]: Analyzing trace with hash 926454329, now seen corresponding path program 1 times [2021-11-19 04:11:31,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:31,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401178072] [2021-11-19 04:11:31,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:31,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:31,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:31,567 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:31,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 04:11:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:31,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:11:31,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:31,851 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 [2021-11-19 04:11:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:32,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:32,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:11:32,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401178072] [2021-11-19 04:11:32,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401178072] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:32,593 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:32,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:11:32,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260911213] [2021-11-19 04:11:32,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:32,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:11:32,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:11:32,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:11:32,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:11:32,595 INFO L87 Difference]: Start difference. First operand 2430 states and 2785 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-19 04:11:51,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:51,428 INFO L93 Difference]: Finished difference Result 5190 states and 5720 transitions. [2021-11-19 04:11:51,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 04:11:51,429 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 40 [2021-11-19 04:11:51,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:51,439 INFO L225 Difference]: With dead ends: 5190 [2021-11-19 04:11:51,439 INFO L226 Difference]: Without dead ends: 5190 [2021-11-19 04:11:51,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:11:51,441 INFO L933 BasicCegarLoop]: 2803 mSDtfsCounter, 6675 mSDsluCounter, 3823 mSDsCounter, 0 mSdLazyCounter, 4150 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6680 SdHoareTripleChecker+Valid, 6626 SdHoareTripleChecker+Invalid, 4184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 4150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:51,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6680 Valid, 6626 Invalid, 4184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 4150 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2021-11-19 04:11:51,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5190 states. [2021-11-19 04:11:51,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5190 to 2430. [2021-11-19 04:11:51,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 1481 states have (on average 1.8541525995948682) internal successors, (2746), 2411 states have internal predecessors, (2746), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:51,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 2781 transitions. [2021-11-19 04:11:51,485 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 2781 transitions. Word has length 40 [2021-11-19 04:11:51,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:51,485 INFO L470 AbstractCegarLoop]: Abstraction has 2430 states and 2781 transitions. [2021-11-19 04:11:51,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-19 04:11:51,486 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 2781 transitions. [2021-11-19 04:11:51,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 04:11:51,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:51,486 INFO L514 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] [2021-11-19 04:11:51,514 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-11-19 04:11:51,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:51,699 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr54REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:51,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:51,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1060930120, now seen corresponding path program 1 times [2021-11-19 04:11:51,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:51,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763059598] [2021-11-19 04:11:51,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:51,701 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:51,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:51,701 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:51,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 04:11:51,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:51,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:11:51,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:51,984 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 [2021-11-19 04:11:52,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:52,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:52,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:52,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:11:52,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763059598] [2021-11-19 04:11:52,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763059598] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:52,248 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:52,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:11:52,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830285856] [2021-11-19 04:11:52,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:52,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:11:52,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:11:52,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:11:52,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:11:52,250 INFO L87 Difference]: Start difference. First operand 2430 states and 2781 transitions. Second operand has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-19 04:11:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:58,988 INFO L93 Difference]: Finished difference Result 4671 states and 5229 transitions. [2021-11-19 04:11:58,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:11:58,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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 40 [2021-11-19 04:11:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:58,996 INFO L225 Difference]: With dead ends: 4671 [2021-11-19 04:11:58,996 INFO L226 Difference]: Without dead ends: 4671 [2021-11-19 04:11:58,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:11:59,002 INFO L933 BasicCegarLoop]: 2816 mSDtfsCounter, 4044 mSDsluCounter, 2380 mSDsCounter, 0 mSdLazyCounter, 3233 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4051 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 3276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 3233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:59,003 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4051 Valid, 5196 Invalid, 3276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 3233 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2021-11-19 04:11:59,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4671 states. [2021-11-19 04:11:59,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4671 to 2426. [2021-11-19 04:11:59,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2426 states, 1481 states have (on average 1.851451721809588) internal successors, (2742), 2407 states have internal predecessors, (2742), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:11:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2426 states to 2426 states and 2777 transitions. [2021-11-19 04:11:59,050 INFO L78 Accepts]: Start accepts. Automaton has 2426 states and 2777 transitions. Word has length 40 [2021-11-19 04:11:59,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:59,051 INFO L470 AbstractCegarLoop]: Abstraction has 2426 states and 2777 transitions. [2021-11-19 04:11:59,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.333333333333334) internal successors, (37), 4 states have internal predecessors, (37), 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) [2021-11-19 04:11:59,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2426 states and 2777 transitions. [2021-11-19 04:11:59,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-11-19 04:11:59,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:59,053 INFO L514 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] [2021-11-19 04:11:59,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:59,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:11:59,265 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr55REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:11:59,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:59,266 INFO L85 PathProgramCache]: Analyzing trace with hash -1060930119, now seen corresponding path program 1 times [2021-11-19 04:11:59,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:11:59,266 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812175494] [2021-11-19 04:11:59,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:59,267 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:11:59,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:11:59,268 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:11:59,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 04:11:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:59,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:11:59,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:59,503 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 [2021-11-19 04:11:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:59,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:00,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:00,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812175494] [2021-11-19 04:12:00,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812175494] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:00,222 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:00,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:12:00,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655700884] [2021-11-19 04:12:00,223 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:00,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:12:00,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:00,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:12:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:12:00,224 INFO L87 Difference]: Start difference. First operand 2426 states and 2777 transitions. Second operand has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-19 04:12:19,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:19,908 INFO L93 Difference]: Finished difference Result 4579 states and 5017 transitions. [2021-11-19 04:12:19,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:12:19,909 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 40 [2021-11-19 04:12:19,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:19,913 INFO L225 Difference]: With dead ends: 4579 [2021-11-19 04:12:19,913 INFO L226 Difference]: Without dead ends: 4579 [2021-11-19 04:12:19,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:12:19,914 INFO L933 BasicCegarLoop]: 3274 mSDtfsCounter, 2744 mSDsluCounter, 5786 mSDsCounter, 0 mSdLazyCounter, 6137 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2749 SdHoareTripleChecker+Valid, 9060 SdHoareTripleChecker+Invalid, 6161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 6137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:19,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2749 Valid, 9060 Invalid, 6161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 6137 Invalid, 0 Unknown, 0 Unchecked, 19.5s Time] [2021-11-19 04:12:19,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2021-11-19 04:12:19,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 2422. [2021-11-19 04:12:19,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2422 states, 1481 states have (on average 1.848750844024308) internal successors, (2738), 2403 states have internal predecessors, (2738), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:12:19,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2422 states to 2422 states and 2773 transitions. [2021-11-19 04:12:19,953 INFO L78 Accepts]: Start accepts. Automaton has 2422 states and 2773 transitions. Word has length 40 [2021-11-19 04:12:19,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:19,953 INFO L470 AbstractCegarLoop]: Abstraction has 2422 states and 2773 transitions. [2021-11-19 04:12:19,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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) [2021-11-19 04:12:19,954 INFO L276 IsEmpty]: Start isEmpty. Operand 2422 states and 2773 transitions. [2021-11-19 04:12:19,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 04:12:19,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:19,954 INFO L514 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] [2021-11-19 04:12:19,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-19 04:12:20,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:20,167 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:20,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1617899872, now seen corresponding path program 1 times [2021-11-19 04:12:20,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:20,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520739561] [2021-11-19 04:12:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:20,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:20,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:20,169 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:20,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 04:12:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:20,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:12:20,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:20,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:20,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:20,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:20,638 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:20,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520739561] [2021-11-19 04:12:20,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520739561] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:20,638 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:20,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:12:20,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537018614] [2021-11-19 04:12:20,659 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:20,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:12:20,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:20,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:12:20,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:12:20,660 INFO L87 Difference]: Start difference. First operand 2422 states and 2773 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-19 04:12:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:20,718 INFO L93 Difference]: Finished difference Result 2416 states and 2759 transitions. [2021-11-19 04:12:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:12:20,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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 44 [2021-11-19 04:12:20,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:20,721 INFO L225 Difference]: With dead ends: 2416 [2021-11-19 04:12:20,722 INFO L226 Difference]: Without dead ends: 2416 [2021-11-19 04:12:20,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:12:20,723 INFO L933 BasicCegarLoop]: 2185 mSDtfsCounter, 1145 mSDsluCounter, 3214 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 5399 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:20,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1149 Valid, 5399 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:12:20,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2416 states. [2021-11-19 04:12:20,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2416 to 2416. [2021-11-19 04:12:20,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2416 states, 1475 states have (on average 1.8467796610169491) internal successors, (2724), 2397 states have internal predecessors, (2724), 18 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 14 states have call predecessors, (17), 17 states have call successors, (17) [2021-11-19 04:12:20,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2416 states to 2416 states and 2759 transitions. [2021-11-19 04:12:20,758 INFO L78 Accepts]: Start accepts. Automaton has 2416 states and 2759 transitions. Word has length 44 [2021-11-19 04:12:20,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:20,759 INFO L470 AbstractCegarLoop]: Abstraction has 2416 states and 2759 transitions. [2021-11-19 04:12:20,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 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) [2021-11-19 04:12:20,759 INFO L276 IsEmpty]: Start isEmpty. Operand 2416 states and 2759 transitions. [2021-11-19 04:12:20,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-11-19 04:12:20,760 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:20,760 INFO L514 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] [2021-11-19 04:12:20,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 04:12:20,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:20,978 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr704REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:20,978 INFO L85 PathProgramCache]: Analyzing trace with hash -357192108, now seen corresponding path program 1 times [2021-11-19 04:12:20,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:20,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [59877904] [2021-11-19 04:12:20,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:20,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:20,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:20,979 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:20,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 04:12:21,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:21,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:12:21,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:21,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:21,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:21,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [59877904] [2021-11-19 04:12:21,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [59877904] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:21,901 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:21,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:12:21,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075572478] [2021-11-19 04:12:21,901 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:21,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:12:21,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:21,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:12:21,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:12:21,902 INFO L87 Difference]: Start difference. First operand 2416 states and 2759 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-19 04:12:22,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:22,210 INFO L93 Difference]: Finished difference Result 3934 states and 4411 transitions. [2021-11-19 04:12:22,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:12:22,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 52 [2021-11-19 04:12:22,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:22,215 INFO L225 Difference]: With dead ends: 3934 [2021-11-19 04:12:22,216 INFO L226 Difference]: Without dead ends: 3934 [2021-11-19 04:12:22,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:12:22,216 INFO L933 BasicCegarLoop]: 2273 mSDtfsCounter, 1564 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 4304 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:22,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1573 Valid, 4304 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 04:12:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2021-11-19 04:12:22,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3135. [2021-11-19 04:12:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 2190 states have (on average 1.8136986301369864) internal successors, (3972), 3109 states have internal predecessors, (3972), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:12:22,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4021 transitions. [2021-11-19 04:12:22,288 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4021 transitions. Word has length 52 [2021-11-19 04:12:22,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:22,288 INFO L470 AbstractCegarLoop]: Abstraction has 3135 states and 4021 transitions. [2021-11-19 04:12:22,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2021-11-19 04:12:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4021 transitions. [2021-11-19 04:12:22,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-11-19 04:12:22,289 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:22,290 INFO L514 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] [2021-11-19 04:12:22,306 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 04:12:22,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:22,503 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:22,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash -964579511, now seen corresponding path program 1 times [2021-11-19 04:12:22,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:22,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106267504] [2021-11-19 04:12:22,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:22,505 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:22,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:22,506 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:22,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 04:12:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:22,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:12:22,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:22,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:23,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:23,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:23,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106267504] [2021-11-19 04:12:23,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106267504] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:23,051 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:23,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:12:23,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740269724] [2021-11-19 04:12:23,052 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:23,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:12:23,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:23,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:12:23,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:12:23,053 INFO L87 Difference]: Start difference. First operand 3135 states and 4021 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-19 04:12:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:23,152 INFO L93 Difference]: Finished difference Result 4463 states and 5423 transitions. [2021-11-19 04:12:23,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:12:23,153 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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 55 [2021-11-19 04:12:23,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:23,159 INFO L225 Difference]: With dead ends: 4463 [2021-11-19 04:12:23,160 INFO L226 Difference]: Without dead ends: 4463 [2021-11-19 04:12:23,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:12:23,161 INFO L933 BasicCegarLoop]: 3646 mSDtfsCounter, 2139 mSDsluCounter, 5135 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2149 SdHoareTripleChecker+Valid, 8781 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:23,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2149 Valid, 8781 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:12:23,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4463 states. [2021-11-19 04:12:23,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4463 to 3111. [2021-11-19 04:12:23,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 2166 states have (on average 1.8153277931671283) internal successors, (3932), 3085 states have internal predecessors, (3932), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:12:23,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 3981 transitions. [2021-11-19 04:12:23,216 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 3981 transitions. Word has length 55 [2021-11-19 04:12:23,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:23,217 INFO L470 AbstractCegarLoop]: Abstraction has 3111 states and 3981 transitions. [2021-11-19 04:12:23,217 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 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) [2021-11-19 04:12:23,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 3981 transitions. [2021-11-19 04:12:23,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-19 04:12:23,218 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:23,218 INFO L514 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] [2021-11-19 04:12:23,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 04:12:23,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:23,432 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr73REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:23,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash -158828041, now seen corresponding path program 1 times [2021-11-19 04:12:23,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:23,433 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848219955] [2021-11-19 04:12:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:23,433 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:23,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:23,434 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:23,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 04:12:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:23,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:12:23,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:23,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:23,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:24,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:24,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:24,013 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848219955] [2021-11-19 04:12:24,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848219955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:24,014 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:24,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:12:24,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365935465] [2021-11-19 04:12:24,014 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:24,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:12:24,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:12:24,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:12:24,015 INFO L87 Difference]: Start difference. First operand 3111 states and 3981 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-19 04:12:24,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:24,104 INFO L93 Difference]: Finished difference Result 4208 states and 4921 transitions. [2021-11-19 04:12:24,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:12:24,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 58 [2021-11-19 04:12:24,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:24,111 INFO L225 Difference]: With dead ends: 4208 [2021-11-19 04:12:24,111 INFO L226 Difference]: Without dead ends: 4208 [2021-11-19 04:12:24,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:12:24,113 INFO L933 BasicCegarLoop]: 3687 mSDtfsCounter, 2130 mSDsluCounter, 5226 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2140 SdHoareTripleChecker+Valid, 8913 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:24,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2140 Valid, 8913 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:12:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2021-11-19 04:12:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 3099. [2021-11-19 04:12:24,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3099 states, 2154 states have (on average 1.8161559888579386) internal successors, (3912), 3073 states have internal predecessors, (3912), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:12:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3099 states to 3099 states and 3961 transitions. [2021-11-19 04:12:24,173 INFO L78 Accepts]: Start accepts. Automaton has 3099 states and 3961 transitions. Word has length 58 [2021-11-19 04:12:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:24,173 INFO L470 AbstractCegarLoop]: Abstraction has 3099 states and 3961 transitions. [2021-11-19 04:12:24,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2021-11-19 04:12:24,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3099 states and 3961 transitions. [2021-11-19 04:12:24,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-11-19 04:12:24,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:24,175 INFO L514 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] [2021-11-19 04:12:24,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-19 04:12:24,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:24,388 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:24,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:24,389 INFO L85 PathProgramCache]: Analyzing trace with hash 468734877, now seen corresponding path program 1 times [2021-11-19 04:12:24,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:24,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110548949] [2021-11-19 04:12:24,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:24,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:24,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:24,391 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:24,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 04:12:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:24,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:12:24,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:24,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:12:24,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:12:24,724 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:12:24,776 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 04:12:24,776 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 [2021-11-19 04:12:24,830 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 04:12:24,830 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 [2021-11-19 04:12:24,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:24,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:25,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:25,096 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:25,096 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110548949] [2021-11-19 04:12:25,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110548949] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:25,096 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:25,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:12:25,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675389949] [2021-11-19 04:12:25,097 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:25,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:12:25,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:25,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:12:25,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:12:25,098 INFO L87 Difference]: Start difference. First operand 3099 states and 3961 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:12:28,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:28,633 INFO L93 Difference]: Finished difference Result 3327 states and 4200 transitions. [2021-11-19 04:12:28,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:12:28,634 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 61 [2021-11-19 04:12:28,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:28,637 INFO L225 Difference]: With dead ends: 3327 [2021-11-19 04:12:28,637 INFO L226 Difference]: Without dead ends: 3327 [2021-11-19 04:12:28,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:12:28,638 INFO L933 BasicCegarLoop]: 2066 mSDtfsCounter, 1027 mSDsluCounter, 7257 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 9323 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:28,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 9323 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-11-19 04:12:28,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3327 states. [2021-11-19 04:12:28,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3327 to 3065. [2021-11-19 04:12:28,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3065 states, 2120 states have (on average 1.8287735849056603) internal successors, (3877), 3039 states have internal predecessors, (3877), 25 states have call successors, (25), 5 states have call predecessors, (25), 4 states have return successors, (24), 21 states have call predecessors, (24), 24 states have call successors, (24) [2021-11-19 04:12:28,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3065 states to 3065 states and 3926 transitions. [2021-11-19 04:12:28,672 INFO L78 Accepts]: Start accepts. Automaton has 3065 states and 3926 transitions. Word has length 61 [2021-11-19 04:12:28,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:28,672 INFO L470 AbstractCegarLoop]: Abstraction has 3065 states and 3926 transitions. [2021-11-19 04:12:28,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:12:28,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3065 states and 3926 transitions. [2021-11-19 04:12:28,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 04:12:28,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:28,674 INFO L514 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] [2021-11-19 04:12:28,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-19 04:12:28,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:28,887 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting mainErr437REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:28,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:28,888 INFO L85 PathProgramCache]: Analyzing trace with hash 73014525, now seen corresponding path program 1 times [2021-11-19 04:12:28,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:28,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518155161] [2021-11-19 04:12:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:28,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:28,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:28,890 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:28,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 04:12:29,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:29,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:12:29,214 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:29,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:30,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:30,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:30,026 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518155161] [2021-11-19 04:12:30,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518155161] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:30,026 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:30,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 04:12:30,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823217932] [2021-11-19 04:12:30,027 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:30,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 04:12:30,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:30,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 04:12:30,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:12:30,028 INFO L87 Difference]: Start difference. First operand 3065 states and 3926 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-19 04:12:30,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:30,180 INFO L93 Difference]: Finished difference Result 4507 states and 5561 transitions. [2021-11-19 04:12:30,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 04:12:30,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 63 [2021-11-19 04:12:30,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:30,186 INFO L225 Difference]: With dead ends: 4507 [2021-11-19 04:12:30,186 INFO L226 Difference]: Without dead ends: 4507 [2021-11-19 04:12:30,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 04:12:30,187 INFO L933 BasicCegarLoop]: 2541 mSDtfsCounter, 1261 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 4602 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:30,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 4602 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:12:30,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2021-11-19 04:12:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 3788. [2021-11-19 04:12:30,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3788 states, 2839 states have (on average 1.792180345191969) internal successors, (5088), 3755 states have internal predecessors, (5088), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 04:12:30,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3788 states to 3788 states and 5151 transitions. [2021-11-19 04:12:30,240 INFO L78 Accepts]: Start accepts. Automaton has 3788 states and 5151 transitions. Word has length 63 [2021-11-19 04:12:30,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:30,240 INFO L470 AbstractCegarLoop]: Abstraction has 3788 states and 5151 transitions. [2021-11-19 04:12:30,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2021-11-19 04:12:30,241 INFO L276 IsEmpty]: Start isEmpty. Operand 3788 states and 5151 transitions. [2021-11-19 04:12:30,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-19 04:12:30,241 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:30,242 INFO L514 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] [2021-11-19 04:12:30,254 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-19 04:12:30,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:30,454 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr391REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:30,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:30,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1815743939, now seen corresponding path program 1 times [2021-11-19 04:12:30,455 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:30,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [501818064] [2021-11-19 04:12:30,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:30,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:30,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:30,457 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:30,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 04:12:30,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:30,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:12:30,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:30,991 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 [2021-11-19 04:12:31,000 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 [2021-11-19 04:12:31,736 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-19 04:12:31,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2021-11-19 04:12:31,743 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-19 04:12:31,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 21 [2021-11-19 04:12:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:31,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:36,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:36,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:36,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [501818064] [2021-11-19 04:12:36,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [501818064] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:36,802 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:36,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:12:36,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931583030] [2021-11-19 04:12:36,802 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:36,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:12:36,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:36,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:12:36,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-19 04:12:36,804 INFO L87 Difference]: Start difference. First operand 3788 states and 5151 transitions. Second operand has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-19 04:12:44,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:44,735 INFO L93 Difference]: Finished difference Result 5502 states and 7503 transitions. [2021-11-19 04:12:44,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:12:44,736 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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 66 [2021-11-19 04:12:44,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:44,740 INFO L225 Difference]: With dead ends: 5502 [2021-11-19 04:12:44,740 INFO L226 Difference]: Without dead ends: 5502 [2021-11-19 04:12:44,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=19, Invalid=22, Unknown=1, NotChecked=0, Total=42 [2021-11-19 04:12:44,741 INFO L933 BasicCegarLoop]: 2165 mSDtfsCounter, 1454 mSDsluCounter, 2381 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 4546 SdHoareTripleChecker+Invalid, 3722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1550 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:44,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1462 Valid, 4546 Invalid, 3722 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 2110 Invalid, 0 Unknown, 1550 Unchecked, 7.8s Time] [2021-11-19 04:12:44,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5502 states. [2021-11-19 04:12:44,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5502 to 3948. [2021-11-19 04:12:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3948 states, 3028 states have (on average 1.7823645970937914) internal successors, (5397), 3913 states have internal predecessors, (5397), 34 states have call successors, (34), 5 states have call predecessors, (34), 4 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2021-11-19 04:12:44,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3948 states to 3948 states and 5464 transitions. [2021-11-19 04:12:44,800 INFO L78 Accepts]: Start accepts. Automaton has 3948 states and 5464 transitions. Word has length 66 [2021-11-19 04:12:44,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:44,801 INFO L470 AbstractCegarLoop]: Abstraction has 3948 states and 5464 transitions. [2021-11-19 04:12:44,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 24.2) internal successors, (121), 6 states have internal predecessors, (121), 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) [2021-11-19 04:12:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 3948 states and 5464 transitions. [2021-11-19 04:12:44,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 04:12:44,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:44,802 INFO L514 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] [2021-11-19 04:12:44,817 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-19 04:12:45,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:45,017 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting mainErr393REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:45,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:45,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1173241412, now seen corresponding path program 1 times [2021-11-19 04:12:45,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:45,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301285952] [2021-11-19 04:12:45,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:45,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:45,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:45,018 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:45,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 04:12:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:45,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:12:45,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:45,485 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:45,540 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 8 treesize of output 6 [2021-11-19 04:12:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:45,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:45,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301285952] [2021-11-19 04:12:45,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301285952] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:45,885 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:45,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 04:12:45,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150241255] [2021-11-19 04:12:45,886 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:45,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:12:45,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:45,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:12:45,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:12:45,888 INFO L87 Difference]: Start difference. First operand 3948 states and 5464 transitions. Second operand has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 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) [2021-11-19 04:12:51,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:51,449 INFO L93 Difference]: Finished difference Result 3917 states and 5385 transitions. [2021-11-19 04:12:51,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:12:51,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 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 68 [2021-11-19 04:12:51,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:51,455 INFO L225 Difference]: With dead ends: 3917 [2021-11-19 04:12:51,455 INFO L226 Difference]: Without dead ends: 3917 [2021-11-19 04:12:51,455 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:12:51,456 INFO L933 BasicCegarLoop]: 1460 mSDtfsCounter, 4458 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 2697 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:51,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4468 Valid, 2697 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-11-19 04:12:51,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3917 states. [2021-11-19 04:12:51,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3917 to 3777. [2021-11-19 04:12:51,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3777 states, 2892 states have (on average 1.744121715076072) internal successors, (5044), 3744 states have internal predecessors, (5044), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 04:12:51,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3777 states to 3777 states and 5107 transitions. [2021-11-19 04:12:51,512 INFO L78 Accepts]: Start accepts. Automaton has 3777 states and 5107 transitions. Word has length 68 [2021-11-19 04:12:51,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:51,513 INFO L470 AbstractCegarLoop]: Abstraction has 3777 states and 5107 transitions. [2021-11-19 04:12:51,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 25.0) internal successors, (125), 6 states have internal predecessors, (125), 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) [2021-11-19 04:12:51,513 INFO L276 IsEmpty]: Start isEmpty. Operand 3777 states and 5107 transitions. [2021-11-19 04:12:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 04:12:51,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:51,514 INFO L514 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] [2021-11-19 04:12:51,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-19 04:12:51,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:51,729 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting mainErr396REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:51,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:51,730 INFO L85 PathProgramCache]: Analyzing trace with hash -407756336, now seen corresponding path program 1 times [2021-11-19 04:12:51,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:51,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436390188] [2021-11-19 04:12:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:51,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:51,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:51,733 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:51,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 04:12:52,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:52,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:12:52,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:12:52,246 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 [2021-11-19 04:12:52,275 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 [2021-11-19 04:12:52,308 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 [2021-11-19 04:12:52,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:52,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:12:52,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:12:52,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:12:52,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436390188] [2021-11-19 04:12:52,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436390188] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:12:52,465 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:12:52,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:12:52,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842486322] [2021-11-19 04:12:52,465 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:12:52,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:12:52,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:12:52,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:12:52,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:12:52,466 INFO L87 Difference]: Start difference. First operand 3777 states and 5107 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2021-11-19 04:12:59,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:12:59,412 INFO L93 Difference]: Finished difference Result 3776 states and 5104 transitions. [2021-11-19 04:12:59,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:12:59,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 71 [2021-11-19 04:12:59,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:12:59,417 INFO L225 Difference]: With dead ends: 3776 [2021-11-19 04:12:59,417 INFO L226 Difference]: Without dead ends: 3776 [2021-11-19 04:12:59,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:12:59,418 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 4 mSDsluCounter, 3474 mSDsCounter, 0 mSdLazyCounter, 2903 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5598 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-11-19 04:12:59,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5598 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2903 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2021-11-19 04:12:59,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-19 04:12:59,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2021-11-19 04:12:59,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 2892 states have (on average 1.7430843706777317) internal successors, (5041), 3743 states have internal predecessors, (5041), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 04:12:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 5104 transitions. [2021-11-19 04:12:59,462 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 5104 transitions. Word has length 71 [2021-11-19 04:12:59,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:12:59,463 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 5104 transitions. [2021-11-19 04:12:59,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2021-11-19 04:12:59,463 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 5104 transitions. [2021-11-19 04:12:59,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 04:12:59,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:12:59,465 INFO L514 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] [2021-11-19 04:12:59,482 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-19 04:12:59,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:12:59,678 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting mainErr397REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:12:59,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:12:59,678 INFO L85 PathProgramCache]: Analyzing trace with hash -407756335, now seen corresponding path program 1 times [2021-11-19 04:12:59,679 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:12:59,679 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [930502701] [2021-11-19 04:12:59,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:12:59,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:12:59,679 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:12:59,680 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:12:59,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 04:12:59,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:12:59,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:12:59,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:13:00,071 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 [2021-11-19 04:13:00,090 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 [2021-11-19 04:13:00,100 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 [2021-11-19 04:13:00,162 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 [2021-11-19 04:13:00,167 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 [2021-11-19 04:13:00,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:00,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:13:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:00,593 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:13:00,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [930502701] [2021-11-19 04:13:00,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [930502701] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:13:00,593 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:13:00,594 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 04:13:00,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226565826] [2021-11-19 04:13:00,594 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:13:00,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:13:00,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:13:00,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:13:00,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:13:00,595 INFO L87 Difference]: Start difference. First operand 3776 states and 5104 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-19 04:13:19,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:13:19,308 INFO L93 Difference]: Finished difference Result 3775 states and 5101 transitions. [2021-11-19 04:13:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:13:19,315 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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 71 [2021-11-19 04:13:19,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:13:19,320 INFO L225 Difference]: With dead ends: 3775 [2021-11-19 04:13:19,320 INFO L226 Difference]: Without dead ends: 3775 [2021-11-19 04:13:19,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:13:19,321 INFO L933 BasicCegarLoop]: 2124 mSDtfsCounter, 4 mSDsluCounter, 4635 mSDsCounter, 0 mSdLazyCounter, 3865 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6759 SdHoareTripleChecker+Invalid, 3866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-11-19 04:13:19,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 6759 Invalid, 3866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3865 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2021-11-19 04:13:19,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2021-11-19 04:13:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3775. [2021-11-19 04:13:19,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3775 states, 2889 states have (on average 1.7438560055382486) internal successors, (5038), 3742 states have internal predecessors, (5038), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 04:13:19,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3775 states to 3775 states and 5101 transitions. [2021-11-19 04:13:19,378 INFO L78 Accepts]: Start accepts. Automaton has 3775 states and 5101 transitions. Word has length 71 [2021-11-19 04:13:19,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:13:19,379 INFO L470 AbstractCegarLoop]: Abstraction has 3775 states and 5101 transitions. [2021-11-19 04:13:19,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-19 04:13:19,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3775 states and 5101 transitions. [2021-11-19 04:13:19,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 04:13:19,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:19,380 INFO L514 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] [2021-11-19 04:13:19,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 04:13:19,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:13:19,595 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting mainErr78REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:13:19,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:19,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1405255012, now seen corresponding path program 1 times [2021-11-19 04:13:19,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:13:19,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1902630584] [2021-11-19 04:13:19,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:19,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:13:19,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:13:19,597 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:13:19,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 04:13:19,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:13:19,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 04:13:19,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:13:19,967 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 [2021-11-19 04:13:19,988 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 [2021-11-19 04:13:20,028 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 [2021-11-19 04:13:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:20,041 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:13:20,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:20,183 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:13:20,184 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1902630584] [2021-11-19 04:13:20,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1902630584] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:13:20,184 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:13:20,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 04:13:20,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140429708] [2021-11-19 04:13:20,184 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:13:20,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:13:20,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:13:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:13:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:13:20,185 INFO L87 Difference]: Start difference. First operand 3775 states and 5101 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2021-11-19 04:13:25,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:13:25,942 INFO L93 Difference]: Finished difference Result 3774 states and 5099 transitions. [2021-11-19 04:13:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:13:25,943 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 71 [2021-11-19 04:13:25,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:13:25,947 INFO L225 Difference]: With dead ends: 3774 [2021-11-19 04:13:25,947 INFO L226 Difference]: Without dead ends: 3774 [2021-11-19 04:13:25,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 137 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:13:25,948 INFO L933 BasicCegarLoop]: 2122 mSDtfsCounter, 4 mSDsluCounter, 3471 mSDsCounter, 0 mSdLazyCounter, 2900 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5593 SdHoareTripleChecker+Invalid, 2901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-19 04:13:25,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5593 Invalid, 2901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2900 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-19 04:13:25,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3774 states. [2021-11-19 04:13:26,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3774 to 3774. [2021-11-19 04:13:26,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3774 states, 2889 states have (on average 1.7431637244721356) internal successors, (5036), 3741 states have internal predecessors, (5036), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 04:13:26,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3774 states to 3774 states and 5099 transitions. [2021-11-19 04:13:26,009 INFO L78 Accepts]: Start accepts. Automaton has 3774 states and 5099 transitions. Word has length 71 [2021-11-19 04:13:26,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:13:26,009 INFO L470 AbstractCegarLoop]: Abstraction has 3774 states and 5099 transitions. [2021-11-19 04:13:26,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2021-11-19 04:13:26,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3774 states and 5099 transitions. [2021-11-19 04:13:26,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 04:13:26,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:26,011 INFO L514 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] [2021-11-19 04:13:26,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 04:13:26,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:13:26,211 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting mainErr79REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:13:26,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1405255013, now seen corresponding path program 1 times [2021-11-19 04:13:26,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:13:26,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [52328133] [2021-11-19 04:13:26,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:26,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:13:26,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:13:26,215 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:13:26,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 04:13:26,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:13:26,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:13:26,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:13:26,626 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 [2021-11-19 04:13:26,646 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 [2021-11-19 04:13:26,654 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 [2021-11-19 04:13:26,713 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 [2021-11-19 04:13:26,717 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 [2021-11-19 04:13:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:26,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:13:27,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:27,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:13:27,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [52328133] [2021-11-19 04:13:27,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [52328133] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:13:27,047 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:13:27,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-19 04:13:27,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128380767] [2021-11-19 04:13:27,047 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:13:27,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:13:27,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:13:27,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:13:27,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:13:27,048 INFO L87 Difference]: Start difference. First operand 3774 states and 5099 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-19 04:13:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:13:45,349 INFO L93 Difference]: Finished difference Result 3773 states and 5097 transitions. [2021-11-19 04:13:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:13:45,350 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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 71 [2021-11-19 04:13:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:13:45,353 INFO L225 Difference]: With dead ends: 3773 [2021-11-19 04:13:45,353 INFO L226 Difference]: Without dead ends: 3773 [2021-11-19 04:13:45,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:13:45,353 INFO L933 BasicCegarLoop]: 2122 mSDtfsCounter, 3 mSDsluCounter, 5794 mSDsCounter, 0 mSdLazyCounter, 4821 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 7916 SdHoareTripleChecker+Invalid, 4822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:13:45,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 7916 Invalid, 4822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4821 Invalid, 0 Unknown, 0 Unchecked, 18.1s Time] [2021-11-19 04:13:45,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2021-11-19 04:13:45,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 3773. [2021-11-19 04:13:45,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2887 states have (on average 1.7436785590578454) internal successors, (5034), 3740 states have internal predecessors, (5034), 32 states have call successors, (32), 5 states have call predecessors, (32), 4 states have return successors, (31), 28 states have call predecessors, (31), 31 states have call successors, (31) [2021-11-19 04:13:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 5097 transitions. [2021-11-19 04:13:45,397 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 5097 transitions. Word has length 71 [2021-11-19 04:13:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:13:45,397 INFO L470 AbstractCegarLoop]: Abstraction has 3773 states and 5097 transitions. [2021-11-19 04:13:45,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 8 states have internal predecessors, (75), 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) [2021-11-19 04:13:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 5097 transitions. [2021-11-19 04:13:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 04:13:45,399 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:45,399 INFO L514 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, 1, 1] [2021-11-19 04:13:45,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 04:13:45,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:13:45,614 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:13:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash 491384311, now seen corresponding path program 1 times [2021-11-19 04:13:45,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:13:45,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [751047627] [2021-11-19 04:13:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:45,615 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:13:45,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:13:45,616 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:13:45,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 04:13:45,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:13:45,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:13:45,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:13:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:46,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:13:46,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:46,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:13:46,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [751047627] [2021-11-19 04:13:46,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [751047627] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 04:13:46,183 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:13:46,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 04:13:46,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882454925] [2021-11-19 04:13:46,183 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 04:13:46,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 04:13:46,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:13:46,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 04:13:46,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:13:46,184 INFO L87 Difference]: Start difference. First operand 3773 states and 5097 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-19 04:13:46,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:13:46,369 INFO L93 Difference]: Finished difference Result 3783 states and 5113 transitions. [2021-11-19 04:13:46,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:13:46,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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 [2021-11-19 04:13:46,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:13:46,377 INFO L225 Difference]: With dead ends: 3783 [2021-11-19 04:13:46,378 INFO L226 Difference]: Without dead ends: 3783 [2021-11-19 04:13:46,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:13:46,379 INFO L933 BasicCegarLoop]: 2120 mSDtfsCounter, 7 mSDsluCounter, 8454 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 10574 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:13:46,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 10574 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:13:46,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2021-11-19 04:13:46,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3783. [2021-11-19 04:13:46,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3783 states, 2895 states have (on average 1.7430051813471503) internal successors, (5046), 3749 states have internal predecessors, (5046), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-19 04:13:46,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3783 states to 3783 states and 5113 transitions. [2021-11-19 04:13:46,434 INFO L78 Accepts]: Start accepts. Automaton has 3783 states and 5113 transitions. Word has length 79 [2021-11-19 04:13:46,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:13:46,434 INFO L470 AbstractCegarLoop]: Abstraction has 3783 states and 5113 transitions. [2021-11-19 04:13:46,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 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) [2021-11-19 04:13:46,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3783 states and 5113 transitions. [2021-11-19 04:13:46,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-19 04:13:46,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:46,436 INFO L514 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, 1, 1] [2021-11-19 04:13:46,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-19 04:13:46,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:13:46,651 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:13:46,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:46,652 INFO L85 PathProgramCache]: Analyzing trace with hash -787144713, now seen corresponding path program 1 times [2021-11-19 04:13:46,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:13:46,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662751052] [2021-11-19 04:13:46,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:13:46,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:13:46,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:13:46,653 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:13:46,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 04:13:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:13:46,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:13:46,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:13:47,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:47,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:13:47,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:13:47,344 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 04:13:47,344 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [662751052] [2021-11-19 04:13:47,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [662751052] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:13:47,345 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:13:47,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-19 04:13:47,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827027907] [2021-11-19 04:13:47,345 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:13:47,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 04:13:47,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 04:13:47,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 04:13:47,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-19 04:13:47,346 INFO L87 Difference]: Start difference. First operand 3783 states and 5113 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-19 04:13:47,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:13:47,752 INFO L93 Difference]: Finished difference Result 3797 states and 5137 transitions. [2021-11-19 04:13:47,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 04:13:47,753 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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 81 [2021-11-19 04:13:47,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:13:47,763 INFO L225 Difference]: With dead ends: 3797 [2021-11-19 04:13:47,764 INFO L226 Difference]: Without dead ends: 3793 [2021-11-19 04:13:47,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-19 04:13:47,765 INFO L933 BasicCegarLoop]: 2122 mSDtfsCounter, 28 mSDsluCounter, 10578 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 12700 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:13:47,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 12700 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:13:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2021-11-19 04:13:47,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 3789. [2021-11-19 04:13:47,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3789 states, 2901 states have (on average 1.7421578765942778) internal successors, (5054), 3755 states have internal predecessors, (5054), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (35), 28 states have call predecessors, (35), 31 states have call successors, (35) [2021-11-19 04:13:47,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3789 states to 3789 states and 5121 transitions. [2021-11-19 04:13:47,835 INFO L78 Accepts]: Start accepts. Automaton has 3789 states and 5121 transitions. Word has length 81 [2021-11-19 04:13:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:13:47,835 INFO L470 AbstractCegarLoop]: Abstraction has 3789 states and 5121 transitions. [2021-11-19 04:13:47,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-19 04:13:47,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3789 states and 5121 transitions. [2021-11-19 04:13:47,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-19 04:13:47,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:13:47,837 INFO L514 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, 1, 1] [2021-11-19 04:13:47,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2021-11-19 04:13:48,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 04:13:48,051 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting mainErr400REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 1189 more)] === [2021-11-19 04:13:48,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:13:48,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1438516215, now seen corresponding path program 2 times [2021-11-19 04:13:48,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 04:13:48,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511236299] [2021-11-19 04:13:48,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 04:13:48,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 04:13:48,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 04:13:48,053 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 04:13:48,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eb8ee3e2-81f9-446e-983f-1d57691524fa/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 04:13:48,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-19 04:13:48,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 04:13:48,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:13:48,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:13:48,460 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 [2021-11-19 04:13:48,475 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:13:48,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:13:48,476 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 04:13:48,530 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 04:13:48,530 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 [2021-11-19 04:13:48,616 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-19 04:13:48,616 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 18 treesize of output 18 [2021-11-19 04:13:48,833 INFO L354 Elim1Store]: treesize reduction 229, result has 11.2 percent of original size [2021-11-19 04:13:48,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 66 treesize of output 86 [2021-11-19 04:13:54,697 INFO L354 Elim1Store]: treesize reduction 1963, result has 5.1 percent of original size [2021-11-19 04:13:54,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 39 case distinctions, treesize of input 118 treesize of output 150 [2021-11-19 04:14:04,664 INFO L354 Elim1Store]: treesize reduction 876, result has 0.1 percent of original size [2021-11-19 04:14:04,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 0 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 157 treesize of output 67 [2021-11-19 04:14:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 04:14:04,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:14:17,820 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_main_~user~0.base_331 (_ BitVec 32))) (or (forall ((|main_#t~mem11| (_ BitVec 32)) (|main_#t~mem10| (_ BitVec 32)) (main_~user~0.offset (_ BitVec 32)) (|main_#t~mem9| (_ BitVec 32))) (bvslt (let ((.cse0 (select (store |c_#memory_int| v_main_~user~0.base_331 (let ((.cse1 (bvmul |main_#t~mem10| |main_#t~mem11|))) (store (store (store (store (store (store (store (store (select |c_#memory_int| v_main_~user~0.base_331) main_~user~0.offset ((_ extract 7 0) |main_#t~mem9|)) (bvadd main_~user~0.offset (_ bv1 32)) ((_ extract 15 8) |main_#t~mem9|)) (bvadd (_ bv2 32) main_~user~0.offset) ((_ extract 23 16) |main_#t~mem9|)) (bvadd (_ bv3 32) main_~user~0.offset) ((_ extract 31 24) |main_#t~mem9|)) (bvadd (_ bv4 32) main_~user~0.offset) ((_ extract 7 0) .cse1)) (bvadd main_~user~0.offset (_ bv5 32)) ((_ extract 15 8) .cse1)) (bvadd (_ bv6 32) main_~user~0.offset) ((_ extract 23 16) .cse1)) (bvadd main_~user~0.offset (_ bv7 32)) ((_ extract 31 24) .cse1)))) |c_main_~#i~0.base|))) (concat (concat (concat (select .cse0 (bvadd (_ bv3 32) |c_main_~#i~0.offset|)) (select .cse0 (bvadd (_ bv2 32) |c_main_~#i~0.offset|))) (select .cse0 (bvadd |c_main_~#i~0.offset| (_ bv1 32)))) (select .cse0 |c_main_~#i~0.offset|))) (_ bv10 32))) (not (= (_ bv0 1) (bvneg (bvneg (select |c_#valid| v_main_~user~0.base_331))))))) is different from false