./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y --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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:47:00,104 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:47:00,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:47:00,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:47:00,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:47:00,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:47:00,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:47:00,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:47:00,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:47:00,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:47:00,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:47:00,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:47:00,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:47:00,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:47:00,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:47:00,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:47:00,203 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:47:00,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:47:00,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:47:00,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:47:00,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:47:00,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:47:00,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:47:00,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:47:00,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:47:00,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:47:00,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:47:00,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:47:00,233 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:47:00,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:47:00,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:47:00,236 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:47:00,237 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:47:00,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:47:00,240 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:47:00,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:47:00,241 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:47:00,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:47:00,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:47:00,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:47:00,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:47:00,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-13 17:47:00,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:47:00,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:47:00,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:47:00,270 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:47:00,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:47:00,271 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:47:00,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:47:00,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:47:00,272 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:47:00,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:47:00,272 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:47:00,272 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:47:00,273 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:47:00,273 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:47:00,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:47:00,273 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:47:00,274 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:47:00,274 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:47:00,274 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:47:00,274 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:47:00,274 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:47:00,275 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:47:00,275 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:47:00,275 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:47:00,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:47:00,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:47:00,276 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:47:00,276 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:47:00,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:47:00,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:47:00,277 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:47:00,277 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_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2021-11-13 17:47:00,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:47:00,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:47:00,568 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:47:00,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:47:00,572 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:47:00,574 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-13 17:47:00,651 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/12d65f926/e6450b83e9df4be0b931888ed551da70/FLAGa5a0de06a [2021-11-13 17:47:01,287 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:47:01,294 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-13 17:47:01,311 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/12d65f926/e6450b83e9df4be0b931888ed551da70/FLAGa5a0de06a [2021-11-13 17:47:01,512 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/12d65f926/e6450b83e9df4be0b931888ed551da70 [2021-11-13 17:47:01,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:47:01,516 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:47:01,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:47:01,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:47:01,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:47:01,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:47:01" (1/1) ... [2021-11-13 17:47:01,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb563af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:01, skipping insertion in model container [2021-11-13 17:47:01,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:47:01" (1/1) ... [2021-11-13 17:47:01,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:47:01,587 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:47:02,089 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-13 17:47:02,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:47:02,239 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) [2021-11-13 17:47:02,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47f56a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:02, skipping insertion in model container [2021-11-13 17:47:02,240 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:47:02,240 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-13 17:47:02,243 INFO L158 Benchmark]: Toolchain (without parser) took 725.60ms. Allocated memory is still 96.5MB. Free memory was 63.9MB in the beginning and 67.4MB in the end (delta: -3.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:47:02,246 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 96.5MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:47:02,247 INFO L158 Benchmark]: CACSL2BoogieTranslator took 723.04ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 67.8MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-13 17:47:02,249 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 96.5MB. Free memory is still 54.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 723.04ms. Allocated memory is still 96.5MB. Free memory was 63.6MB in the beginning and 67.8MB in the end (delta: -4.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 751]: 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_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y --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 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:47:04,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:47:04,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:47:04,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:47:04,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:47:04,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:47:04,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:47:04,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:47:04,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:47:04,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:47:04,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:47:04,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:47:04,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:47:04,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:47:04,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:47:04,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:47:04,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:47:04,625 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:47:04,627 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:47:04,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:47:04,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:47:04,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:47:04,642 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:47:04,644 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:47:04,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:47:04,655 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:47:04,655 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:47:04,658 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:47:04,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:47:04,661 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:47:04,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:47:04,663 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:47:04,665 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:47:04,666 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:47:04,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:47:04,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:47:04,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:47:04,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:47:04,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:47:04,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:47:04,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:47:04,687 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-13 17:47:04,739 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:47:04,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:47:04,740 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:47:04,740 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:47:04,741 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:47:04,741 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:47:04,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:47:04,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:47:04,743 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:47:04,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:47:04,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:47:04,745 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:47:04,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:47:04,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:47:04,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:47:04,746 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-13 17:47:04,746 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-13 17:47:04,746 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-13 17:47:04,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:47:04,747 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 17:47:04,747 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 17:47:04,747 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 17:47:04,747 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:47:04,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:47:04,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:47:04,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:47:04,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:47:04,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:47:04,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:47:04,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:47:04,749 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-13 17:47:04,749 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 17:47:04,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:47:04,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 17:47:04,750 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_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 470d7065e9fd450e98d72326ef313763cf0710ea45f0a443b018e8a49bdf7927 [2021-11-13 17:47:05,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:47:05,173 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:47:05,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:47:05,177 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:47:05,178 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:47:05,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-13 17:47:05,248 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/4a71a689a/0a296f4db1c2402fa0dc207185b16fed/FLAG40dc2c629 [2021-11-13 17:47:05,993 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:47:05,993 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i [2021-11-13 17:47:06,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/4a71a689a/0a296f4db1c2402fa0dc207185b16fed/FLAG40dc2c629 [2021-11-13 17:47:06,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/data/4a71a689a/0a296f4db1c2402fa0dc207185b16fed [2021-11-13 17:47:06,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:47:06,196 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-13 17:47:06,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:47:06,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:47:06,201 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:47:06,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:47:06" (1/1) ... [2021-11-13 17:47:06,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24ae37d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:06, skipping insertion in model container [2021-11-13 17:47:06,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:47:06" (1/1) ... [2021-11-13 17:47:06,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:47:06,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:47:06,840 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-13 17:47:07,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:47:07,024 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 17:47:07,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:47:07,086 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-13 17:47:07,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:47:07,163 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:47:07,188 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test1-1.i[33021,33034] [2021-11-13 17:47:07,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:47:07,281 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:47:07,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07 WrapperNode [2021-11-13 17:47:07,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:47:07,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:47:07,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:47:07,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:47:07,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,332 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:47:07,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:47:07,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:47:07,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:47:07,458 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (1/1) ... [2021-11-13 17:47:07,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:47:07,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:07,492 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:07,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:47:07,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-13 17:47:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:47:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:47:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-13 17:47:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-13 17:47:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-13 17:47:07,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-13 17:47:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-13 17:47:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-11-13 17:47:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 17:47:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2021-11-13 17:47:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-13 17:47:07,528 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-13 17:47:07,528 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure memmove [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure memccpy [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure memchr [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure strcpy [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2021-11-13 17:47:07,529 INFO L130 BoogieDeclarations]: Found specification of procedure strcat [2021-11-13 17:47:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure strncat [2021-11-13 17:47:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure strcmp [2021-11-13 17:47:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-11-13 17:47:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll [2021-11-13 17:47:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm [2021-11-13 17:47:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure strcoll_l [2021-11-13 17:47:07,530 INFO L130 BoogieDeclarations]: Found specification of procedure strxfrm_l [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strdup [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strndup [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strchr [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strspn [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strpbrk [2021-11-13 17:47:07,531 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtok [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure __strtok_r [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure strtok_r [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure strlen [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure strnlen [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_r [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure strerror_l [2021-11-13 17:47:07,532 INFO L130 BoogieDeclarations]: Found specification of procedure bcmp [2021-11-13 17:47:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure bcopy [2021-11-13 17:47:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure bzero [2021-11-13 17:47:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure index [2021-11-13 17:47:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure rindex [2021-11-13 17:47:07,543 INFO L130 BoogieDeclarations]: Found specification of procedure ffs [2021-11-13 17:47:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure ffsl [2021-11-13 17:47:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure ffsll [2021-11-13 17:47:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp [2021-11-13 17:47:07,544 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp [2021-11-13 17:47:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure strcasecmp_l [2021-11-13 17:47:07,545 INFO L130 BoogieDeclarations]: Found specification of procedure strncasecmp_l [2021-11-13 17:47:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure explicit_bzero [2021-11-13 17:47:07,547 INFO L130 BoogieDeclarations]: Found specification of procedure strsep [2021-11-13 17:47:07,548 INFO L130 BoogieDeclarations]: Found specification of procedure strsignal [2021-11-13 17:47:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure __stpcpy [2021-11-13 17:47:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure stpcpy [2021-11-13 17:47:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure __stpncpy [2021-11-13 17:47:07,549 INFO L130 BoogieDeclarations]: Found specification of procedure stpncpy [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-13 17:47:07,550 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-13 17:47:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-13 17:47:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-13 17:47:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-13 17:47:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-13 17:47:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-13 17:47:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-13 17:47:07,551 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-13 17:47:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-13 17:47:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-13 17:47:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-13 17:47:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-13 17:47:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-13 17:47:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-13 17:47:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-13 17:47:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-13 17:47:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-13 17:47:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-13 17:47:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-13 17:47:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-13 17:47:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-13 17:47:07,556 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-13 17:47:07,557 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-13 17:47:07,558 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-13 17:47:07,558 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-13 17:47:07,558 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-13 17:47:07,558 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-13 17:47:07,558 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-13 17:47:07,558 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-13 17:47:07,559 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-13 17:47:07,559 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-13 17:47:07,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-13 17:47:07,560 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-13 17:47:07,560 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-13 17:47:07,563 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-13 17:47:07,563 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-13 17:47:07,564 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-13 17:47:07,564 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-13 17:47:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-13 17:47:07,565 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-13 17:47:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-13 17:47:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-13 17:47:07,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-13 17:47:07,572 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-13 17:47:07,573 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-13 17:47:07,574 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-13 17:47:07,575 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-13 17:47:07,576 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:47:07,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 17:47:07,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:47:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-13 17:47:07,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-13 17:47:08,086 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-13 17:47:11,241 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:47:11,245 INFO L299 CfgBuilder]: Removed 31 assume(true) statements. [2021-11-13 17:47:11,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:47:11 BoogieIcfgContainer [2021-11-13 17:47:11,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:47:11,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:47:11,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:47:11,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:47:11,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:47:06" (1/3) ... [2021-11-13 17:47:11,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8cd618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:47:11, skipping insertion in model container [2021-11-13 17:47:11,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:07" (2/3) ... [2021-11-13 17:47:11,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d8cd618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:47:11, skipping insertion in model container [2021-11-13 17:47:11,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:47:11" (3/3) ... [2021-11-13 17:47:11,260 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test1-1.i [2021-11-13 17:47:11,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:47:11,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 330 error locations. [2021-11-13 17:47:11,326 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:47:11,335 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 [2021-11-13 17:47:11,336 INFO L340 AbstractCegarLoop]: Starting to check reachability of 330 error locations. [2021-11-13 17:47:11,381 INFO L276 IsEmpty]: Start isEmpty. Operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2021-11-13 17:47:11,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:47:11,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:11,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:11,390 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:11,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:11,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779480, now seen corresponding path program 1 times [2021-11-13 17:47:11,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:11,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528172793] [2021-11-13 17:47:11,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:11,409 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:11,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:11,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:11,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 17:47:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:11,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-13 17:47:11,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:11,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:11,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:11,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:11,808 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528172793] [2021-11-13 17:47:11,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528172793] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:11,809 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:11,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:47:11,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352979795] [2021-11-13 17:47:11,812 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:11,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-13 17:47:11,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-13 17:47:11,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:47:11,852 INFO L87 Difference]: Start difference. First operand has 676 states, 327 states have (on average 2.223241590214067) internal successors, (727), 664 states have internal predecessors, (727), 16 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-13 17:47:11,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:11,959 INFO L93 Difference]: Finished difference Result 667 states and 714 transitions. [2021-11-13 17:47:11,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:47:11,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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 9 [2021-11-13 17:47:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:12,001 INFO L225 Difference]: With dead ends: 667 [2021-11-13 17:47:12,002 INFO L226 Difference]: Without dead ends: 664 [2021-11-13 17:47:12,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-13 17:47:12,008 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.19ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:12,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 9.19ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-13 17:47:12,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2021-11-13 17:47:12,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2021-11-13 17:47:12,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 322 states have (on average 2.111801242236025) internal successors, (680), 653 states have internal predecessors, (680), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-13 17:47:12,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 711 transitions. [2021-11-13 17:47:12,132 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 711 transitions. Word has length 9 [2021-11-13 17:47:12,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:12,139 INFO L470 AbstractCegarLoop]: Abstraction has 664 states and 711 transitions. [2021-11-13 17:47:12,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 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) [2021-11-13 17:47:12,140 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 711 transitions. [2021-11-13 17:47:12,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:47:12,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:12,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:12,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:12,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:12,342 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:12,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:12,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779418, now seen corresponding path program 1 times [2021-11-13 17:47:12,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:12,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270140385] [2021-11-13 17:47:12,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:12,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:12,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:12,345 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:12,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 17:47:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:12,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:12,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:12,580 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 [2021-11-13 17:47:12,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:12,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:12,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:12,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:12,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270140385] [2021-11-13 17:47:12,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270140385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:12,659 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:12,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-13 17:47:12,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059130447] [2021-11-13 17:47:12,659 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:12,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:47:12,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:47:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:47:12,662 INFO L87 Difference]: Start difference. First operand 664 states and 711 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-11-13 17:47:14,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:14,285 INFO L93 Difference]: Finished difference Result 622 states and 670 transitions. [2021-11-13 17:47:14,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:47:14,286 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 9 [2021-11-13 17:47:14,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:14,292 INFO L225 Difference]: With dead ends: 622 [2021-11-13 17:47:14,292 INFO L226 Difference]: Without dead ends: 622 [2021-11-13 17:47:14,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:47:14,295 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 574 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1271.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.78ms SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1542.08ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:14,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 405 Invalid, 397 Unknown, 0 Unchecked, 16.78ms Time], IncrementalHoareTripleChecker [54 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 1542.08ms Time] [2021-11-13 17:47:14,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-13 17:47:14,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 615. [2021-11-13 17:47:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 322 states have (on average 1.9596273291925466) internal successors, (631), 604 states have internal predecessors, (631), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-13 17:47:14,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 662 transitions. [2021-11-13 17:47:14,329 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 662 transitions. Word has length 9 [2021-11-13 17:47:14,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:14,329 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 662 transitions. [2021-11-13 17:47:14,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-11-13 17:47:14,330 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 662 transitions. [2021-11-13 17:47:14,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-13 17:47:14,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:14,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:14,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:14,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:14,544 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr1REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:14,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:14,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1974779417, now seen corresponding path program 1 times [2021-11-13 17:47:14,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:14,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164510295] [2021-11-13 17:47:14,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:14,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:14,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:14,548 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:14,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 17:47:14,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:14,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:14,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:14,763 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 [2021-11-13 17:47:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:14,794 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:14,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:14,887 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:14,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164510295] [2021-11-13 17:47:14,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164510295] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:14,888 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:14,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-13 17:47:14,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163536253] [2021-11-13 17:47:14,888 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:14,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:14,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:14,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:14,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:14,890 INFO L87 Difference]: Start difference. First operand 615 states and 662 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-11-13 17:47:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:17,949 INFO L93 Difference]: Finished difference Result 688 states and 739 transitions. [2021-11-13 17:47:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:17,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 9 [2021-11-13 17:47:17,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:17,957 INFO L225 Difference]: With dead ends: 688 [2021-11-13 17:47:17,957 INFO L226 Difference]: Without dead ends: 688 [2021-11-13 17:47:17,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:17,959 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 301 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2602.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 939 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.66ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3001.57ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:17,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 939 Invalid, 635 Unknown, 0 Unchecked, 14.66ms Time], IncrementalHoareTripleChecker [15 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 3001.57ms Time] [2021-11-13 17:47:17,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2021-11-13 17:47:17,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 637. [2021-11-13 17:47:17,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 354 states have (on average 1.9406779661016949) internal successors, (687), 626 states have internal predecessors, (687), 16 states have call successors, (16), 5 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 15 states have call successors, (15) [2021-11-13 17:47:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 718 transitions. [2021-11-13 17:47:18,004 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 718 transitions. Word has length 9 [2021-11-13 17:47:18,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:18,005 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 718 transitions. [2021-11-13 17:47:18,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2021-11-13 17:47:18,006 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 718 transitions. [2021-11-13 17:47:18,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-13 17:47:18,006 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:18,007 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:18,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:18,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:18,219 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr322REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:18,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:18,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1087799300, now seen corresponding path program 1 times [2021-11-13 17:47:18,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:18,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462971136] [2021-11-13 17:47:18,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:18,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:18,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:18,222 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:18,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 17:47:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:18,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:18,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:18,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:18,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:18,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:18,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:18,465 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462971136] [2021-11-13 17:47:18,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462971136] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:18,474 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:18,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:47:18,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514444228] [2021-11-13 17:47:18,476 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:18,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:18,477 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:18,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:18,479 INFO L87 Difference]: Start difference. First operand 637 states and 718 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-13 17:47:18,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:18,617 INFO L93 Difference]: Finished difference Result 1219 states and 1361 transitions. [2021-11-13 17:47:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:18,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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 10 [2021-11-13 17:47:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:18,626 INFO L225 Difference]: With dead ends: 1219 [2021-11-13 17:47:18,626 INFO L226 Difference]: Without dead ends: 1219 [2021-11-13 17:47:18,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:18,628 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1138 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 90.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1144 SdHoareTripleChecker+Valid, 1371 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.28ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.63ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:18,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1144 Valid, 1371 Invalid, 16 Unknown, 0 Unchecked, 6.28ms Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 104.63ms Time] [2021-11-13 17:47:18,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2021-11-13 17:47:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 959. [2021-11-13 17:47:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 676 states have (on average 1.9585798816568047) internal successors, (1324), 945 states have internal predecessors, (1324), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1361 transitions. [2021-11-13 17:47:18,664 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1361 transitions. Word has length 10 [2021-11-13 17:47:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:18,664 INFO L470 AbstractCegarLoop]: Abstraction has 959 states and 1361 transitions. [2021-11-13 17:47:18,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2021-11-13 17:47:18,664 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1361 transitions. [2021-11-13 17:47:18,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-13 17:47:18,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:18,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:18,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:18,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:18,877 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr4REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:18,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 548999728, now seen corresponding path program 1 times [2021-11-13 17:47:18,879 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:18,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218284476] [2021-11-13 17:47:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:18,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:18,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:18,881 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:18,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 17:47:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:19,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:19,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:19,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:19,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:19,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:19,193 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218284476] [2021-11-13 17:47:19,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218284476] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:19,193 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:19,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-13 17:47:19,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803885135] [2021-11-13 17:47:19,193 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:19,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:19,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:19,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:19,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:19,194 INFO L87 Difference]: Start difference. First operand 959 states and 1361 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) [2021-11-13 17:47:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:19,246 INFO L93 Difference]: Finished difference Result 899 states and 1275 transitions. [2021-11-13 17:47:19,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:47:19,247 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 [2021-11-13 17:47:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:19,253 INFO L225 Difference]: With dead ends: 899 [2021-11-13 17:47:19,254 INFO L226 Difference]: Without dead ends: 899 [2021-11-13 17:47:19,254 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 [2021-11-13 17:47:19,255 INFO L933 BasicCegarLoop]: 604 mSDtfsCounter, 1082 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.71ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.85ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:19,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1086 Valid, 673 Invalid, 16 Unknown, 0 Unchecked, 4.71ms Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 28.85ms Time] [2021-11-13 17:47:19,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2021-11-13 17:47:19,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 899. [2021-11-13 17:47:19,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 640 states have (on average 1.934375) internal successors, (1238), 885 states have internal predecessors, (1238), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1275 transitions. [2021-11-13 17:47:19,285 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1275 transitions. Word has length 15 [2021-11-13 17:47:19,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:19,286 INFO L470 AbstractCegarLoop]: Abstraction has 899 states and 1275 transitions. [2021-11-13 17:47:19,286 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) [2021-11-13 17:47:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1275 transitions. [2021-11-13 17:47:19,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-13 17:47:19,287 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:19,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:19,303 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-13 17:47:19,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:19,500 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr28REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -692239478, now seen corresponding path program 1 times [2021-11-13 17:47:19,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:19,501 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2115226351] [2021-11-13 17:47:19,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:19,501 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:19,501 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:19,503 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:19,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 17:47:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:19,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:19,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:19,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:19,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:19,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2115226351] [2021-11-13 17:47:19,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2115226351] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:19,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:19,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-13 17:47:19,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497285804] [2021-11-13 17:47:19,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:19,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:47:19,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:19,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:47:19,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:19,802 INFO L87 Difference]: Start difference. First operand 899 states and 1275 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) [2021-11-13 17:47:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:19,898 INFO L93 Difference]: Finished difference Result 871 states and 1219 transitions. [2021-11-13 17:47:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:19,899 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 [2021-11-13 17:47:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:19,905 INFO L225 Difference]: With dead ends: 871 [2021-11-13 17:47:19,906 INFO L226 Difference]: Without dead ends: 871 [2021-11-13 17:47:19,906 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 [2021-11-13 17:47:19,908 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 512 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.34ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:19,909 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 1250 Invalid, 64 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [32 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 60.34ms Time] [2021-11-13 17:47:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2021-11-13 17:47:19,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 869. [2021-11-13 17:47:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 869 states, 624 states have (on average 1.891025641025641) internal successors, (1180), 855 states have internal predecessors, (1180), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1217 transitions. [2021-11-13 17:47:19,943 INFO L78 Accepts]: Start accepts. Automaton has 869 states and 1217 transitions. Word has length 17 [2021-11-13 17:47:19,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:19,944 INFO L470 AbstractCegarLoop]: Abstraction has 869 states and 1217 transitions. [2021-11-13 17:47:19,944 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) [2021-11-13 17:47:19,944 INFO L276 IsEmpty]: Start isEmpty. Operand 869 states and 1217 transitions. [2021-11-13 17:47:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:47:19,947 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:19,947 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] [2021-11-13 17:47:19,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:20,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:20,161 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr42REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:20,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:20,161 INFO L85 PathProgramCache]: Analyzing trace with hash 460749560, now seen corresponding path program 1 times [2021-11-13 17:47:20,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:20,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239821120] [2021-11-13 17:47:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:20,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:20,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:20,163 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:20,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 17:47:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:20,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:20,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:20,381 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 [2021-11-13 17:47:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:20,498 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:20,618 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:20,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239821120] [2021-11-13 17:47:20,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239821120] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:20,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:20,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:47:20,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237877409] [2021-11-13 17:47:20,620 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:20,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:20,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:20,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:20,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:20,621 INFO L87 Difference]: Start difference. First operand 869 states and 1217 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) [2021-11-13 17:47:22,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:22,176 INFO L93 Difference]: Finished difference Result 898 states and 1244 transitions. [2021-11-13 17:47:22,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:47:22,177 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 [2021-11-13 17:47:22,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:22,184 INFO L225 Difference]: With dead ends: 898 [2021-11-13 17:47:22,185 INFO L226 Difference]: Without dead ends: 898 [2021-11-13 17:47:22,185 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 [2021-11-13 17:47:22,186 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 894 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1253.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.78ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1497.42ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:22,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 456 Invalid, 386 Unknown, 0 Unchecked, 10.78ms Time], IncrementalHoareTripleChecker [23 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 1497.42ms Time] [2021-11-13 17:47:22,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-11-13 17:47:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 865. [2021-11-13 17:47:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 624 states have (on average 1.8782051282051282) internal successors, (1172), 851 states have internal predecessors, (1172), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1209 transitions. [2021-11-13 17:47:22,217 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1209 transitions. Word has length 31 [2021-11-13 17:47:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:22,217 INFO L470 AbstractCegarLoop]: Abstraction has 865 states and 1209 transitions. [2021-11-13 17:47:22,218 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) [2021-11-13 17:47:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1209 transitions. [2021-11-13 17:47:22,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-13 17:47:22,219 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:22,219 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] [2021-11-13 17:47:22,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:22,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:22,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr43REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:22,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:22,435 INFO L85 PathProgramCache]: Analyzing trace with hash 460749561, now seen corresponding path program 1 times [2021-11-13 17:47:22,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:22,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714590078] [2021-11-13 17:47:22,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:22,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:22,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:22,439 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:22,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 17:47:22,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:22,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:47:22,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:22,707 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 [2021-11-13 17:47:23,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:23,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:23,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:23,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:23,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714590078] [2021-11-13 17:47:23,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1714590078] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:23,541 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:23,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:47:23,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009204370] [2021-11-13 17:47:23,542 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:23,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:23,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:23,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:23,543 INFO L87 Difference]: Start difference. First operand 865 states and 1209 transitions. Second operand has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:28,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:28,352 INFO L93 Difference]: Finished difference Result 945 states and 1262 transitions. [2021-11-13 17:47:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:47:28,354 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-11-13 17:47:28,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:28,359 INFO L225 Difference]: With dead ends: 945 [2021-11-13 17:47:28,360 INFO L226 Difference]: Without dead ends: 945 [2021-11-13 17:47:28,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:47:28,361 INFO L933 BasicCegarLoop]: 457 mSDtfsCounter, 588 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4114.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 589 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.11ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4619.62ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:28,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [589 Valid, 1130 Invalid, 849 Unknown, 0 Unchecked, 11.11ms Time], IncrementalHoareTripleChecker [16 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 4619.62ms Time] [2021-11-13 17:47:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2021-11-13 17:47:28,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 861. [2021-11-13 17:47:28,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 861 states, 624 states have (on average 1.8653846153846154) internal successors, (1164), 847 states have internal predecessors, (1164), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:28,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 861 states to 861 states and 1201 transitions. [2021-11-13 17:47:28,386 INFO L78 Accepts]: Start accepts. Automaton has 861 states and 1201 transitions. Word has length 31 [2021-11-13 17:47:28,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:28,387 INFO L470 AbstractCegarLoop]: Abstraction has 861 states and 1201 transitions. [2021-11-13 17:47:28,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.6) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:28,387 INFO L276 IsEmpty]: Start isEmpty. Operand 861 states and 1201 transitions. [2021-11-13 17:47:28,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 17:47:28,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:28,389 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] [2021-11-13 17:47:28,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:28,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:28,602 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:28,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:28,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1828330934, now seen corresponding path program 1 times [2021-11-13 17:47:28,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:28,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910998813] [2021-11-13 17:47:28,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:28,603 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:28,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:28,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:28,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 17:47:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:28,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:28,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:28,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:28,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:29,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:29,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:29,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910998813] [2021-11-13 17:47:29,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910998813] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:29,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:29,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:47:29,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546048480] [2021-11-13 17:47:29,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:29,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:47:29,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:29,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:29,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:29,123 INFO L87 Difference]: Start difference. First operand 861 states and 1201 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:29,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:29,199 INFO L93 Difference]: Finished difference Result 849 states and 1181 transitions. [2021-11-13 17:47:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:29,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 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 46 [2021-11-13 17:47:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:29,207 INFO L225 Difference]: With dead ends: 849 [2021-11-13 17:47:29,207 INFO L226 Difference]: Without dead ends: 849 [2021-11-13 17:47:29,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:29,211 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 488 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.11ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.02ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:29,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [492 Valid, 1159 Invalid, 41 Unknown, 0 Unchecked, 3.11ms Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 49.02ms Time] [2021-11-13 17:47:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2021-11-13 17:47:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 849. [2021-11-13 17:47:29,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 849 states, 612 states have (on average 1.869281045751634) internal successors, (1144), 835 states have internal predecessors, (1144), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:29,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 849 states to 849 states and 1181 transitions. [2021-11-13 17:47:29,255 INFO L78 Accepts]: Start accepts. Automaton has 849 states and 1181 transitions. Word has length 46 [2021-11-13 17:47:29,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:29,258 INFO L470 AbstractCegarLoop]: Abstraction has 849 states and 1181 transitions. [2021-11-13 17:47:29,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:29,258 INFO L276 IsEmpty]: Start isEmpty. Operand 849 states and 1181 transitions. [2021-11-13 17:47:29,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-13 17:47:29,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:29,268 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] [2021-11-13 17:47:29,289 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:29,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:29,480 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr107REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:29,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:29,481 INFO L85 PathProgramCache]: Analyzing trace with hash -850731138, now seen corresponding path program 1 times [2021-11-13 17:47:29,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:29,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250685243] [2021-11-13 17:47:29,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:29,482 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:29,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:29,484 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:29,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-13 17:47:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:29,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:29,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:30,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:30,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:30,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250685243] [2021-11-13 17:47:30,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250685243] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:30,647 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:30,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 17:47:30,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665432270] [2021-11-13 17:47:30,648 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:30,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:47:30,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:30,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:47:30,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:47:30,649 INFO L87 Difference]: Start difference. First operand 849 states and 1181 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:30,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:30,759 INFO L93 Difference]: Finished difference Result 799 states and 1076 transitions. [2021-11-13 17:47:30,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:47:30,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 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 54 [2021-11-13 17:47:30,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:30,765 INFO L225 Difference]: With dead ends: 799 [2021-11-13 17:47:30,766 INFO L226 Difference]: Without dead ends: 799 [2021-11-13 17:47:30,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:47:30,767 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 67 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.46ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:30,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1026 Invalid, 29 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 97.46ms Time] [2021-11-13 17:47:30,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2021-11-13 17:47:30,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 799. [2021-11-13 17:47:30,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 799 states, 562 states have (on average 1.8487544483985765) internal successors, (1039), 785 states have internal predecessors, (1039), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:30,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 799 states to 799 states and 1076 transitions. [2021-11-13 17:47:30,793 INFO L78 Accepts]: Start accepts. Automaton has 799 states and 1076 transitions. Word has length 54 [2021-11-13 17:47:30,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:30,794 INFO L470 AbstractCegarLoop]: Abstraction has 799 states and 1076 transitions. [2021-11-13 17:47:30,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:30,794 INFO L276 IsEmpty]: Start isEmpty. Operand 799 states and 1076 transitions. [2021-11-13 17:47:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-13 17:47:30,795 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:30,796 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] [2021-11-13 17:47:30,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:31,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:31,010 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr61REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:31,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:31,011 INFO L85 PathProgramCache]: Analyzing trace with hash 363306019, now seen corresponding path program 1 times [2021-11-13 17:47:31,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:31,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235949056] [2021-11-13 17:47:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:31,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:31,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:31,014 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:31,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 17:47:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:31,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-13 17:47:31,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:31,385 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 [2021-11-13 17:47:31,394 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 [2021-11-13 17:47:32,161 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-13 17:47:32,162 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2021-11-13 17:47:32,173 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-13 17:47:32,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 22 [2021-11-13 17:47:32,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:32,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:37,446 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:37,447 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235949056] [2021-11-13 17:47:37,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235949056] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:37,447 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:37,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:47:37,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797456165] [2021-11-13 17:47:37,448 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:37,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:37,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:47:37,450 INFO L87 Difference]: Start difference. First operand 799 states and 1076 transitions. Second operand has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:41,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:41,377 INFO L93 Difference]: Finished difference Result 970 states and 1192 transitions. [2021-11-13 17:47:41,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:47:41,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 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 57 [2021-11-13 17:47:41,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:41,386 INFO L225 Difference]: With dead ends: 970 [2021-11-13 17:47:41,386 INFO L226 Difference]: Without dead ends: 970 [2021-11-13 17:47:41,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-13 17:47:41,387 INFO L933 BasicCegarLoop]: 361 mSDtfsCounter, 987 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 707 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3327.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 991 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.41ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 718 IncrementalHoareTripleChecker+Unchecked, 3867.61ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:41,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [991 Valid, 748 Invalid, 1468 Unknown, 0 Unchecked, 11.41ms Time], IncrementalHoareTripleChecker [43 Valid, 707 Invalid, 0 Unknown, 718 Unchecked, 3867.61ms Time] [2021-11-13 17:47:41,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2021-11-13 17:47:41,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 780. [2021-11-13 17:47:41,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 575 states have (on average 1.7373913043478262) internal successors, (999), 766 states have internal predecessors, (999), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:41,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 1036 transitions. [2021-11-13 17:47:41,413 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 1036 transitions. Word has length 57 [2021-11-13 17:47:41,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:41,414 INFO L470 AbstractCegarLoop]: Abstraction has 780 states and 1036 transitions. [2021-11-13 17:47:41,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.0) internal successors, (105), 6 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:41,414 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 1036 transitions. [2021-11-13 17:47:41,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-11-13 17:47:41,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:41,415 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] [2021-11-13 17:47:41,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:41,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:41,632 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr63REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:41,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:41,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1244743876, now seen corresponding path program 1 times [2021-11-13 17:47:41,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:41,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1245611760] [2021-11-13 17:47:41,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:41,634 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:41,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:41,636 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:41,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 17:47:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:41,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:41,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:42,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:42,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:42,186 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 [2021-11-13 17:47:42,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:42,467 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:42,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1245611760] [2021-11-13 17:47:42,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1245611760] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:42,467 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:42,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-13 17:47:42,468 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017583205] [2021-11-13 17:47:42,468 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:42,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:42,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:42,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:42,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:42,470 INFO L87 Difference]: Start difference. First operand 780 states and 1036 transitions. Second operand has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:44,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:44,053 INFO L93 Difference]: Finished difference Result 778 states and 1032 transitions. [2021-11-13 17:47:44,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:44,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 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 59 [2021-11-13 17:47:44,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:44,059 INFO L225 Difference]: With dead ends: 778 [2021-11-13 17:47:44,059 INFO L226 Difference]: Without dead ends: 778 [2021-11-13 17:47:44,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:44,060 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 442 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1291.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.47ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1538.68ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:44,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 563 Invalid, 311 Unknown, 0 Unchecked, 5.47ms Time], IncrementalHoareTripleChecker [9 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1538.68ms Time] [2021-11-13 17:47:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2021-11-13 17:47:44,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 778. [2021-11-13 17:47:44,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 575 states have (on average 1.7304347826086957) internal successors, (995), 764 states have internal predecessors, (995), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:44,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 1032 transitions. [2021-11-13 17:47:44,085 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 1032 transitions. Word has length 59 [2021-11-13 17:47:44,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:44,086 INFO L470 AbstractCegarLoop]: Abstraction has 778 states and 1032 transitions. [2021-11-13 17:47:44,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 21.8) internal successors, (109), 6 states have internal predecessors, (109), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:44,086 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 1032 transitions. [2021-11-13 17:47:44,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 17:47:44,087 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:44,087 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] [2021-11-13 17:47:44,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:44,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:44,313 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr66REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:44,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:44,314 INFO L85 PathProgramCache]: Analyzing trace with hash -582487087, now seen corresponding path program 1 times [2021-11-13 17:47:44,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:44,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [265764916] [2021-11-13 17:47:44,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:44,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:44,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:44,317 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:44,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 17:47:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:44,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:44,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:44,685 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 [2021-11-13 17:47:44,706 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 19 [2021-11-13 17:47:44,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-13 17:47:44,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:44,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:44,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:44,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [265764916] [2021-11-13 17:47:44,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [265764916] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:44,929 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:44,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-13 17:47:44,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086518805] [2021-11-13 17:47:44,930 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:44,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 17:47:44,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:44,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 17:47:44,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:47:44,932 INFO L87 Difference]: Start difference. First operand 778 states and 1032 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:46,988 INFO L93 Difference]: Finished difference Result 777 states and 1030 transitions. [2021-11-13 17:47:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:46,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 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 62 [2021-11-13 17:47:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:46,994 INFO L225 Difference]: With dead ends: 777 [2021-11-13 17:47:46,995 INFO L226 Difference]: Without dead ends: 777 [2021-11-13 17:47:46,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:47:46,996 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 4 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1697.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.22ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1995.92ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:46,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1367 Invalid, 731 Unknown, 0 Unchecked, 6.22ms Time], IncrementalHoareTripleChecker [1 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 1995.92ms Time] [2021-11-13 17:47:46,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2021-11-13 17:47:47,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 777. [2021-11-13 17:47:47,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777 states, 575 states have (on average 1.7269565217391305) internal successors, (993), 763 states have internal predecessors, (993), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777 states to 777 states and 1030 transitions. [2021-11-13 17:47:47,019 INFO L78 Accepts]: Start accepts. Automaton has 777 states and 1030 transitions. Word has length 62 [2021-11-13 17:47:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:47,020 INFO L470 AbstractCegarLoop]: Abstraction has 777 states and 1030 transitions. [2021-11-13 17:47:47,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 777 states and 1030 transitions. [2021-11-13 17:47:47,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-13 17:47:47,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:47,021 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] [2021-11-13 17:47:47,045 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:47,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:47,246 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr67REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:47,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:47,246 INFO L85 PathProgramCache]: Analyzing trace with hash -582487086, now seen corresponding path program 1 times [2021-11-13 17:47:47,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:47,247 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437450282] [2021-11-13 17:47:47,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:47,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:47,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:47,249 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:47,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 17:47:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:47,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:47:47,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:47,618 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 [2021-11-13 17:47:47,645 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 [2021-11-13 17:47:47,657 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 [2021-11-13 17:47:47,725 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 [2021-11-13 17:47:47,729 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 [2021-11-13 17:47:47,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:47,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:48,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:48,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:48,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437450282] [2021-11-13 17:47:48,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437450282] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:48,121 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:48,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-13 17:47:48,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801614024] [2021-11-13 17:47:48,121 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:48,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:47:48,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:48,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:47:48,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:47:48,122 INFO L87 Difference]: Start difference. First operand 777 states and 1030 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:54,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:54,655 INFO L93 Difference]: Finished difference Result 776 states and 1028 transitions. [2021-11-13 17:47:54,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:54,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-13 17:47:54,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:54,666 INFO L225 Difference]: With dead ends: 776 [2021-11-13 17:47:54,666 INFO L226 Difference]: Without dead ends: 776 [2021-11-13 17:47:54,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:47:54,668 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 2 mSDsluCounter, 1692 mSDsCounter, 0 mSdLazyCounter, 1449 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5735.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2215 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.92ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6435.86ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:54,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 2215 Invalid, 1450 Unknown, 0 Unchecked, 10.92ms Time], IncrementalHoareTripleChecker [1 Valid, 1449 Invalid, 0 Unknown, 0 Unchecked, 6435.86ms Time] [2021-11-13 17:47:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2021-11-13 17:47:54,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 776. [2021-11-13 17:47:54,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 573 states have (on average 1.7294938917975566) internal successors, (991), 762 states have internal predecessors, (991), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 18 states have call successors, (18) [2021-11-13 17:47:54,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 1028 transitions. [2021-11-13 17:47:54,728 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 1028 transitions. Word has length 62 [2021-11-13 17:47:54,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:54,729 INFO L470 AbstractCegarLoop]: Abstraction has 776 states and 1028 transitions. [2021-11-13 17:47:54,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-13 17:47:54,730 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 1028 transitions. [2021-11-13 17:47:54,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 17:47:54,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:54,731 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] [2021-11-13 17:47:54,754 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:54,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:54,945 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:54,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:54,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1992122424, now seen corresponding path program 1 times [2021-11-13 17:47:54,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:54,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062259327] [2021-11-13 17:47:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:54,948 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:54,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:54,949 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:54,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-13 17:47:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:55,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:47:55,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:55,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:55,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:55,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:55,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:55,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062259327] [2021-11-13 17:47:55,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062259327] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:55,551 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:55,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-13 17:47:55,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661499071] [2021-11-13 17:47:55,552 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:55,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:47:55,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:55,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:47:55,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:47:55,553 INFO L87 Difference]: Start difference. First operand 776 states and 1028 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-13 17:47:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:55,647 INFO L93 Difference]: Finished difference Result 786 states and 1042 transitions. [2021-11-13 17:47:55,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:55,650 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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 70 [2021-11-13 17:47:55,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:55,656 INFO L225 Difference]: With dead ends: 786 [2021-11-13 17:47:55,656 INFO L226 Difference]: Without dead ends: 786 [2021-11-13 17:47:55,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:47:55,658 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 9 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.56ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:55,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 1564 Invalid, 34 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 64.56ms Time] [2021-11-13 17:47:55,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2021-11-13 17:47:55,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 786. [2021-11-13 17:47:55,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 581 states have (on average 1.7263339070567987) internal successors, (1003), 771 states have internal predecessors, (1003), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 17:47:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 1042 transitions. [2021-11-13 17:47:55,687 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 1042 transitions. Word has length 70 [2021-11-13 17:47:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:55,688 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 1042 transitions. [2021-11-13 17:47:55,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 6 states have internal predecessors, (68), 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) [2021-11-13 17:47:55,688 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 1042 transitions. [2021-11-13 17:47:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 17:47:55,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:55,689 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] [2021-11-13 17:47:55,703 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:55,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:55,900 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:55,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:55,901 INFO L85 PathProgramCache]: Analyzing trace with hash -616502664, now seen corresponding path program 1 times [2021-11-13 17:47:55,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:55,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977546010] [2021-11-13 17:47:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:55,902 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:55,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:55,903 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:55,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-13 17:47:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:56,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 17:47:56,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:56,366 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:56,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:56,621 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:56,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977546010] [2021-11-13 17:47:56,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977546010] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:56,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:47:56,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-13 17:47:56,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909182579] [2021-11-13 17:47:56,622 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:56,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 17:47:56,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:56,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 17:47:56,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:47:56,624 INFO L87 Difference]: Start difference. First operand 786 states and 1042 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-13 17:47:57,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:57,057 INFO L93 Difference]: Finished difference Result 800 states and 1062 transitions. [2021-11-13 17:47:57,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:47:57,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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 72 [2021-11-13 17:47:57,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:47:57,065 INFO L225 Difference]: With dead ends: 800 [2021-11-13 17:47:57,065 INFO L226 Difference]: Without dead ends: 796 [2021-11-13 17:47:57,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:47:57,066 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 30 mSDsluCounter, 2083 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 199.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 2608 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 231.47ms IncrementalHoareTripleChecker+Time [2021-11-13 17:47:57,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 2608 Invalid, 109 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [17 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 231.47ms Time] [2021-11-13 17:47:57,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2021-11-13 17:47:57,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 792. [2021-11-13 17:47:57,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 587 states have (on average 1.7223168654173764) internal successors, (1011), 777 states have internal predecessors, (1011), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 17:47:57,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 1050 transitions. [2021-11-13 17:47:57,097 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 1050 transitions. Word has length 72 [2021-11-13 17:47:57,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:47:57,098 INFO L470 AbstractCegarLoop]: Abstraction has 792 states and 1050 transitions. [2021-11-13 17:47:57,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 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) [2021-11-13 17:47:57,099 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 1050 transitions. [2021-11-13 17:47:57,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-13 17:47:57,100 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:47:57,100 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] [2021-11-13 17:47:57,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:57,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:47:57,317 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:47:57,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:57,318 INFO L85 PathProgramCache]: Analyzing trace with hash 876564216, now seen corresponding path program 2 times [2021-11-13 17:47:57,318 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:47:57,318 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599028702] [2021-11-13 17:47:57,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:47:57,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:47:57,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:47:57,320 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:47:57,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 17:47:57,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:47:57,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:47:57,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:47:57,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:58,045 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:58,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:58,640 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:58,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:47:58,641 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599028702] [2021-11-13 17:47:58,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599028702] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:58,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:47:58,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-11-13 17:47:58,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857705037] [2021-11-13 17:47:58,643 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:58,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-13 17:47:58,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:47:58,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-13 17:47:58,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:47:58,645 INFO L87 Difference]: Start difference. First operand 792 states and 1050 transitions. Second operand has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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) [2021-11-13 17:48:00,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:00,465 INFO L93 Difference]: Finished difference Result 820 states and 1094 transitions. [2021-11-13 17:48:00,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-13 17:48:00,466 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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 76 [2021-11-13 17:48:00,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:00,472 INFO L225 Difference]: With dead ends: 820 [2021-11-13 17:48:00,473 INFO L226 Difference]: Without dead ends: 816 [2021-11-13 17:48:00,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=457, Invalid=949, Unknown=0, NotChecked=0, Total=1406 [2021-11-13 17:48:00,475 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 78 mSDsluCounter, 4196 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 644.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 4725 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.33ms SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 755.25ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:00,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 4725 Invalid, 366 Unknown, 0 Unchecked, 6.33ms Time], IncrementalHoareTripleChecker [57 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 755.25ms Time] [2021-11-13 17:48:00,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2021-11-13 17:48:00,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 804. [2021-11-13 17:48:00,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 804 states, 599 states have (on average 1.7145242070116862) internal successors, (1027), 789 states have internal predecessors, (1027), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 17:48:00,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 804 states to 804 states and 1066 transitions. [2021-11-13 17:48:00,506 INFO L78 Accepts]: Start accepts. Automaton has 804 states and 1066 transitions. Word has length 76 [2021-11-13 17:48:00,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:00,507 INFO L470 AbstractCegarLoop]: Abstraction has 804 states and 1066 transitions. [2021-11-13 17:48:00,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.444444444444445) internal successors, (80), 18 states have internal predecessors, (80), 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) [2021-11-13 17:48:00,507 INFO L276 IsEmpty]: Start isEmpty. Operand 804 states and 1066 transitions. [2021-11-13 17:48:00,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-13 17:48:00,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:00,509 INFO L514 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:00,528 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:48:00,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:48:00,724 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:48:00,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:00,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1089906696, now seen corresponding path program 3 times [2021-11-13 17:48:00,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:48:00,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [434097821] [2021-11-13 17:48:00,725 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:48:00,726 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:48:00,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:48:00,726 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:48:00,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 17:48:01,442 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:48:01,442 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:48:01,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-13 17:48:01,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:48:01,999 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:01,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:48:03,825 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:03,825 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:48:03,825 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [434097821] [2021-11-13 17:48:03,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [434097821] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:48:03,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:48:03,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2021-11-13 17:48:03,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555994716] [2021-11-13 17:48:03,826 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:48:03,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-13 17:48:03,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:48:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-13 17:48:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=801, Unknown=0, NotChecked=0, Total=1122 [2021-11-13 17:48:03,830 INFO L87 Difference]: Start difference. First operand 804 states and 1066 transitions. Second operand has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-13 17:48:12,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:12,757 INFO L93 Difference]: Finished difference Result 860 states and 1170 transitions. [2021-11-13 17:48:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-13 17:48:12,758 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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 84 [2021-11-13 17:48:12,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:12,764 INFO L225 Difference]: With dead ends: 860 [2021-11-13 17:48:12,764 INFO L226 Difference]: Without dead ends: 854 [2021-11-13 17:48:12,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=1377, Invalid=2783, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:48:12,767 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 261 mSDsluCounter, 7982 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2318.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 8518 SdHoareTripleChecker+Invalid, 1410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.61ms SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2661.37ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:12,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [261 Valid, 8518 Invalid, 1410 Unknown, 0 Unchecked, 16.61ms Time], IncrementalHoareTripleChecker [179 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 2661.37ms Time] [2021-11-13 17:48:12,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-13 17:48:12,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 828. [2021-11-13 17:48:12,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 623 states have (on average 1.6982343499197432) internal successors, (1058), 813 states have internal predecessors, (1058), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 17:48:12,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1097 transitions. [2021-11-13 17:48:12,800 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1097 transitions. Word has length 84 [2021-11-13 17:48:12,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:12,801 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1097 transitions. [2021-11-13 17:48:12,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.823529411764706) internal successors, (96), 34 states have internal predecessors, (96), 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) [2021-11-13 17:48:12,801 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1097 transitions. [2021-11-13 17:48:12,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-13 17:48:12,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:12,803 INFO L514 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:12,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:48:13,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:48:13,024 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:48:13,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:13,025 INFO L85 PathProgramCache]: Analyzing trace with hash -145593864, now seen corresponding path program 4 times [2021-11-13 17:48:13,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:48:13,025 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063590894] [2021-11-13 17:48:13,025 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:48:13,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:48:13,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:48:13,026 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:48:13,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-13 17:48:13,340 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:48:13,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:48:13,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-13 17:48:13,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:48:14,587 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:14,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:48:19,060 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:48:19,060 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-13 17:48:19,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063590894] [2021-11-13 17:48:19,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063590894] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:48:19,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-13 17:48:19,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-13 17:48:19,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627804723] [2021-11-13 17:48:19,061 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-13 17:48:19,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-13 17:48:19,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-13 17:48:19,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-13 17:48:19,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1000, Invalid=3290, Unknown=0, NotChecked=0, Total=4290 [2021-11-13 17:48:19,065 INFO L87 Difference]: Start difference. First operand 828 states and 1097 transitions. Second operand has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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) [2021-11-13 17:48:34,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:48:34,664 INFO L93 Difference]: Finished difference Result 920 states and 1246 transitions. [2021-11-13 17:48:34,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2021-11-13 17:48:34,665 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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 100 [2021-11-13 17:48:34,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:48:34,671 INFO L225 Difference]: With dead ends: 920 [2021-11-13 17:48:34,671 INFO L226 Difference]: Without dead ends: 916 [2021-11-13 17:48:34,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2313 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=4503, Invalid=14679, Unknown=0, NotChecked=0, Total=19182 [2021-11-13 17:48:34,678 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 267 mSDsluCounter, 16992 mSDsCounter, 0 mSdLazyCounter, 3989 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6987.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 17544 SdHoareTripleChecker+Invalid, 4488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 42.85ms SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 3989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8043.76ms IncrementalHoareTripleChecker+Time [2021-11-13 17:48:34,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 17544 Invalid, 4488 Unknown, 0 Unchecked, 42.85ms Time], IncrementalHoareTripleChecker [499 Valid, 3989 Invalid, 0 Unknown, 0 Unchecked, 8043.76ms Time] [2021-11-13 17:48:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2021-11-13 17:48:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 858. [2021-11-13 17:48:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 653 states have (on average 1.6906584992343032) internal successors, (1104), 843 states have internal predecessors, (1104), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (20), 9 states have call predecessors, (20), 18 states have call successors, (20) [2021-11-13 17:48:34,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1143 transitions. [2021-11-13 17:48:34,722 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1143 transitions. Word has length 100 [2021-11-13 17:48:34,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:48:34,723 INFO L470 AbstractCegarLoop]: Abstraction has 858 states and 1143 transitions. [2021-11-13 17:48:34,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 1.9393939393939394) internal successors, (128), 66 states have internal predecessors, (128), 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) [2021-11-13 17:48:34,723 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1143 transitions. [2021-11-13 17:48:34,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-13 17:48:34,728 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:48:34,728 INFO L514 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:48:34,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-13 17:48:34,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 [2021-11-13 17:48:34,944 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting mainErr70REQUIRES_VIOLATION === [__VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION (and 326 more)] === [2021-11-13 17:48:34,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:48:34,945 INFO L85 PathProgramCache]: Analyzing trace with hash 841634232, now seen corresponding path program 5 times [2021-11-13 17:48:34,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-13 17:48:34,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128358405] [2021-11-13 17:48:34,946 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:48:34,946 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 17:48:34,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat [2021-11-13 17:48:34,948 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 17:48:34,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_78bb3e7f-4bd4-4c6c-ae29-355cf270b57b/bin/uautomizer-YU5uOKAj3y/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-13 17:48:36,217 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2021-11-13 17:48:36,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:48:36,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-13 17:48:36,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:48:36,273 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 [2021-11-13 17:48:36,524 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-13 17:48:36,524 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-13 17:48:36,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-13 17:48:36,822 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 48 treesize of output 36