./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:05:40,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:05:40,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:05:40,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:05:40,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:05:40,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:05:40,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:05:40,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:05:40,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:05:40,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:05:40,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:05:40,181 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:05:40,182 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:05:40,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:05:40,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:05:40,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:05:40,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:05:40,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:05:40,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:05:40,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:05:40,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:05:40,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:05:40,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:05:40,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:05:40,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:05:40,224 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:05:40,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:05:40,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:05:40,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:05:40,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:05:40,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:05:40,234 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:05:40,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:05:40,238 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:05:40,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:05:40,240 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:05:40,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:05:40,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:05:40,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:05:40,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:05:40,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:05:40,244 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-19 05:05:40,290 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:05:40,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:05:40,291 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:05:40,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:05:40,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:05:40,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:05:40,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:05:40,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:05:40,300 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:05:40,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:05:40,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:05:40,302 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:05:40,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:05:40,303 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:05:40,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:05:40,303 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:05:40,303 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:05:40,304 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:05:40,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:05:40,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:05:40,304 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:05:40,304 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:05:40,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:05:40,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:05:40,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:05:40,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:05:40,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:05:40,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:05:40,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:05:40,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:05:40,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:05:40,309 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_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 [2021-11-19 05:05:40,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:05:40,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:05:40,650 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:05:40,651 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:05:40,652 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:05:40,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-11-19 05:05:40,732 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/a18addf37/6adc8ead0fba468f8dc9f8d34d48543d/FLAG82da1b742 [2021-11-19 05:05:41,349 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:05:41,350 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-11-19 05:05:41,362 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/a18addf37/6adc8ead0fba468f8dc9f8d34d48543d/FLAG82da1b742 [2021-11-19 05:05:41,649 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/a18addf37/6adc8ead0fba468f8dc9f8d34d48543d [2021-11-19 05:05:41,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:05:41,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:05:41,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:05:41,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:05:41,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:05:41,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:41" (1/1) ... [2021-11-19 05:05:41,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1402d2c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:41, skipping insertion in model container [2021-11-19 05:05:41,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:41" (1/1) ... [2021-11-19 05:05:41,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:05:41,709 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:05:42,143 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:05:42,153 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 05:05:42,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@46882ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:42, skipping insertion in model container [2021-11-19 05:05:42,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:05:42,155 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-11-19 05:05:42,158 INFO L158 Benchmark]: Toolchain (without parser) took 502.61ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.4MB in the beginning and 84.0MB in the end (delta: -40.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 05:05:42,160 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 05:05:42,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.80ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.2MB in the beginning and 84.0MB in the end (delta: -40.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 05:05:42,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory is still 61.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.80ms. Allocated memory was 81.8MB in the beginning and 109.1MB in the end (delta: 27.3MB). Free memory was 43.2MB in the beginning and 84.0MB in the end (delta: -40.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 526]: 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_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:05:44,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:05:44,735 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:05:44,770 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:05:44,771 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:05:44,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:05:44,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:05:44,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:05:44,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:05:44,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:05:44,798 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:05:44,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:05:44,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:05:44,803 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:05:44,805 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:05:44,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:05:44,810 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:05:44,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:05:44,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:05:44,824 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:05:44,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:05:44,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:05:44,831 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:05:44,832 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:05:44,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:05:44,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:05:44,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:05:44,845 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:05:44,846 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:05:44,847 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:05:44,847 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:05:44,848 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:05:44,850 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:05:44,852 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:05:44,853 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:05:44,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:05:44,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:05:44,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:05:44,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:05:44,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:05:44,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:05:44,861 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-19 05:05:44,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:05:44,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:05:44,914 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:05:44,914 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:05:44,915 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:05:44,916 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:05:44,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:05:44,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:05:44,918 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:05:44,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:05:44,919 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:05:44,920 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-19 05:05:44,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:05:44,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:05:44,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:05:44,921 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-19 05:05:44,921 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-19 05:05:44,921 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-19 05:05:44,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:05:44,922 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 05:05:44,922 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 05:05:44,922 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 05:05:44,922 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:05:44,923 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:05:44,923 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:05:44,923 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:05:44,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:05:44,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:05:44,924 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:05:44,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:05:44,925 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-19 05:05:44,925 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 05:05:44,925 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:05:44,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 05:05:44,926 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_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ba885d2ca843c278430bc3d4272c307ea7df8f1fbcd0da84e81382a8c1939a93 [2021-11-19 05:05:45,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:05:45,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:05:45,405 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:05:45,407 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:05:45,408 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:05:45,410 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-11-19 05:05:45,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/9b7dd776b/4a299d880aa54e4bb301334a258f8f5a/FLAGded5912cc [2021-11-19 05:05:46,236 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:05:46,237 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/sv-benchmarks/c/array-memsafety/java_BubbleSort-alloca-1.i [2021-11-19 05:05:46,249 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/9b7dd776b/4a299d880aa54e4bb301334a258f8f5a/FLAGded5912cc [2021-11-19 05:05:46,263 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/data/9b7dd776b/4a299d880aa54e4bb301334a258f8f5a [2021-11-19 05:05:46,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:05:46,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-11-19 05:05:46,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:05:46,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:05:46,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:05:46,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:46,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5257de90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46, skipping insertion in model container [2021-11-19 05:05:46,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:46,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:05:46,345 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:05:46,805 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:05:46,821 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 05:05:46,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:05:46,898 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:05:46,903 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:05:46,936 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:05:46,970 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:05:46,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46 WrapperNode [2021-11-19 05:05:46,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:05:46,972 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:05:46,972 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:05:46,972 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:05:46,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:46,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:47,007 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:47,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:47,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:47,047 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:47,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:47,067 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:05:47,068 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:05:47,068 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:05:47,068 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:05:47,069 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (1/1) ... [2021-11-19 05:05:47,088 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:05:47,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:05:47,122 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:05:47,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:05:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-11-19 05:05:47,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:05:47,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:05:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-11-19 05:05:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-11-19 05:05:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-11-19 05:05:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-11-19 05:05:47,175 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-11-19 05:05:47,176 INFO L138 BoogieDeclarations]: Found implementation of procedure sort [2021-11-19 05:05:47,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-11-19 05:05:47,176 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-11-19 05:05:47,177 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-11-19 05:05:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-11-19 05:05:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-11-19 05:05:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-11-19 05:05:47,182 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-11-19 05:05:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-11-19 05:05:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-11-19 05:05:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-11-19 05:05:47,183 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-11-19 05:05:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-11-19 05:05:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-11-19 05:05:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-11-19 05:05:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-11-19 05:05:47,184 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-11-19 05:05:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-11-19 05:05:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-11-19 05:05:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-11-19 05:05:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-11-19 05:05:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-11-19 05:05:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-11-19 05:05:47,185 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-11-19 05:05:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-11-19 05:05:47,186 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-11-19 05:05:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-11-19 05:05:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-11-19 05:05:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-11-19 05:05:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-11-19 05:05:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-11-19 05:05:47,187 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-11-19 05:05:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-11-19 05:05:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-11-19 05:05:47,188 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-11-19 05:05:47,189 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-11-19 05:05:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-11-19 05:05:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-11-19 05:05:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-11-19 05:05:47,190 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-11-19 05:05:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-11-19 05:05:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-11-19 05:05:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-11-19 05:05:47,191 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-11-19 05:05:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-11-19 05:05:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-11-19 05:05:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-11-19 05:05:47,202 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-11-19 05:05:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-11-19 05:05:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-11-19 05:05:47,203 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-11-19 05:05:47,204 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-11-19 05:05:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-11-19 05:05:47,205 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-11-19 05:05:47,206 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-11-19 05:05:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-11-19 05:05:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-11-19 05:05:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-11-19 05:05:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-11-19 05:05:47,207 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-11-19 05:05:47,208 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-11-19 05:05:47,209 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-11-19 05:05:47,210 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-11-19 05:05:47,211 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-11-19 05:05:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-11-19 05:05:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-11-19 05:05:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-11-19 05:05:47,212 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-11-19 05:05:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-11-19 05:05:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-11-19 05:05:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-11-19 05:05:47,213 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-11-19 05:05:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-11-19 05:05:47,214 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-11-19 05:05:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-11-19 05:05:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-11-19 05:05:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-11-19 05:05:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-11-19 05:05:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-11-19 05:05:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-11-19 05:05:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-11-19 05:05:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-11-19 05:05:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-11-19 05:05:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-11-19 05:05:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-11-19 05:05:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-11-19 05:05:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-11-19 05:05:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-11-19 05:05:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-11-19 05:05:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure sort [2021-11-19 05:05:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 05:05:47,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 05:05:47,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-11-19 05:05:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 05:05:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 05:05:47,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-11-19 05:05:47,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:05:47,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-11-19 05:05:47,565 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:05:47,566 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:05:48,050 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:05:48,057 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:05:48,058 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-19 05:05:48,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:48 BoogieIcfgContainer [2021-11-19 05:05:48,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:05:48,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:05:48,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:05:48,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:05:48,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:05:46" (1/3) ... [2021-11-19 05:05:48,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110145e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:48, skipping insertion in model container [2021-11-19 05:05:48,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:05:46" (2/3) ... [2021-11-19 05:05:48,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@110145e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:05:48, skipping insertion in model container [2021-11-19 05:05:48,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:05:48" (3/3) ... [2021-11-19 05:05:48,068 INFO L111 eAbstractionObserver]: Analyzing ICFG java_BubbleSort-alloca-1.i [2021-11-19 05:05:48,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:05:48,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-19 05:05:48,165 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:05:48,175 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:05:48,176 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-19 05:05:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 42 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:48,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:05:48,229 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:48,230 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:48,231 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:48,239 INFO L85 PathProgramCache]: Analyzing trace with hash -435715572, now seen corresponding path program 1 times [2021-11-19 05:05:48,255 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:48,255 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1219923287] [2021-11-19 05:05:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:48,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:48,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:48,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:48,302 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 05:05:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:48,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 05:05:48,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:48,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:05:48,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:48,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:48,948 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:48,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1219923287] [2021-11-19 05:05:48,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1219923287] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:48,950 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:48,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-19 05:05:48,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777022890] [2021-11-19 05:05:48,953 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:48,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 05:05:48,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:49,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 05:05:49,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:05:49,006 INFO L87 Difference]: Start difference. First operand has 49 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 42 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:49,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:49,690 INFO L93 Difference]: Finished difference Result 74 states and 82 transitions. [2021-11-19 05:05:49,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:05:49,694 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 [2021-11-19 05:05:49,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:49,703 INFO L225 Difference]: With dead ends: 74 [2021-11-19 05:05:49,704 INFO L226 Difference]: Without dead ends: 69 [2021-11-19 05:05:49,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:05:49,709 INFO L933 BasicCegarLoop]: 54 mSDtfsCounter, 41 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:49,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 212 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:05:49,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-19 05:05:49,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 50. [2021-11-19 05:05:49,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 30 states have (on average 1.7) internal successors, (51), 44 states have internal predecessors, (51), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:49,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2021-11-19 05:05:49,753 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 10 [2021-11-19 05:05:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:49,754 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2021-11-19 05:05:49,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2021-11-19 05:05:49,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-19 05:05:49,755 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:49,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:49,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:49,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:49,968 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:49,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:49,969 INFO L85 PathProgramCache]: Analyzing trace with hash -435715573, now seen corresponding path program 1 times [2021-11-19 05:05:49,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:49,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364654065] [2021-11-19 05:05:49,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:49,971 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:49,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:49,972 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:50,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 05:05:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:50,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 05:05:50,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:50,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:05:50,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:50,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:50,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:50,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364654065] [2021-11-19 05:05:50,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364654065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:50,138 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:50,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 05:05:50,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880773972] [2021-11-19 05:05:50,139 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:50,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:05:50,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:50,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:05:50,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:05:50,142 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:50,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:50,257 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2021-11-19 05:05:50,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:05:50,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 [2021-11-19 05:05:50,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:50,260 INFO L225 Difference]: With dead ends: 49 [2021-11-19 05:05:50,260 INFO L226 Difference]: Without dead ends: 49 [2021-11-19 05:05:50,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:05:50,262 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 5 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:50,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 71 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:05:50,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-11-19 05:05:50,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-11-19 05:05:50,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 43 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:50,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2021-11-19 05:05:50,272 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 10 [2021-11-19 05:05:50,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:50,272 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2021-11-19 05:05:50,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:50,273 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2021-11-19 05:05:50,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:05:50,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:50,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:50,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:50,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:50,492 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting sortErr0REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:50,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:50,493 INFO L85 PathProgramCache]: Analyzing trace with hash -2089908068, now seen corresponding path program 1 times [2021-11-19 05:05:50,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:50,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411067142] [2021-11-19 05:05:50,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:50,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:50,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:50,502 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:50,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 05:05:50,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:50,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:05:50,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:50,690 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-19 05:05:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:50,753 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:50,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:50,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:50,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411067142] [2021-11-19 05:05:50,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411067142] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:50,819 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:50,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-19 05:05:50,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364348006] [2021-11-19 05:05:50,820 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:50,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:05:50,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:50,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:05:50,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:05:50,822 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:51,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:51,055 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-11-19 05:05:51,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:05:51,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 05:05:51,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:51,059 INFO L225 Difference]: With dead ends: 43 [2021-11-19 05:05:51,059 INFO L226 Difference]: Without dead ends: 43 [2021-11-19 05:05:51,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:05:51,061 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 50 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:51,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 66 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 05:05:51,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-19 05:05:51,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-11-19 05:05:51,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.4333333333333333) internal successors, (43), 37 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:51,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-11-19 05:05:51,067 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 14 [2021-11-19 05:05:51,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:51,068 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-11-19 05:05:51,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:51,068 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-11-19 05:05:51,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:05:51,069 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:51,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:51,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:51,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:51,285 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting sortErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:51,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:51,285 INFO L85 PathProgramCache]: Analyzing trace with hash -2089908067, now seen corresponding path program 1 times [2021-11-19 05:05:51,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:51,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659635024] [2021-11-19 05:05:51,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:51,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:51,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:51,288 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:51,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 05:05:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:51,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:05:51,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:51,480 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 17 treesize of output 16 [2021-11-19 05:05:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:51,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:52,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:52,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:52,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659635024] [2021-11-19 05:05:52,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659635024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:52,440 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:52,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-19 05:05:52,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88265525] [2021-11-19 05:05:52,441 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:52,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:05:52,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:52,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:05:52,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:05:52,447 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:52,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:52,879 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2021-11-19 05:05:52,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:05:52,880 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 05:05:52,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:52,882 INFO L225 Difference]: With dead ends: 50 [2021-11-19 05:05:52,882 INFO L226 Difference]: Without dead ends: 50 [2021-11-19 05:05:52,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:05:52,884 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 15 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:52,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 185 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 39 Unchecked, 0.4s Time] [2021-11-19 05:05:52,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-19 05:05:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-11-19 05:05:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.4) internal successors, (49), 42 states have internal predecessors, (49), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 05:05:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2021-11-19 05:05:52,892 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 14 [2021-11-19 05:05:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:52,892 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2021-11-19 05:05:52,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 10 states have internal predecessors, (17), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2021-11-19 05:05:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:05:52,894 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:52,894 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:52,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:53,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:53,104 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:53,105 INFO L85 PathProgramCache]: Analyzing trace with hash -1290110897, now seen corresponding path program 1 times [2021-11-19 05:05:53,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:53,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1557900995] [2021-11-19 05:05:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:53,106 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:53,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:53,107 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:53,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 05:05:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:53,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 05:05:53,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:53,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:53,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:53,362 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:53,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:53,363 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1557900995] [2021-11-19 05:05:53,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1557900995] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:53,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:05:53,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-19 05:05:53,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941100139] [2021-11-19 05:05:53,364 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:53,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:05:53,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:05:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:05:53,365 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:53,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:53,464 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-11-19 05:05:53,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:05:53,465 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-11-19 05:05:53,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:53,466 INFO L225 Difference]: With dead ends: 57 [2021-11-19 05:05:53,466 INFO L226 Difference]: Without dead ends: 57 [2021-11-19 05:05:53,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:05:53,467 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 9 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:53,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 213 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:05:53,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-19 05:05:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2021-11-19 05:05:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.358974358974359) internal successors, (53), 46 states have internal predecessors, (53), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2021-11-19 05:05:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 61 transitions. [2021-11-19 05:05:53,476 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 61 transitions. Word has length 14 [2021-11-19 05:05:53,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:53,476 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 61 transitions. [2021-11-19 05:05:53,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:53,477 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 61 transitions. [2021-11-19 05:05:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-19 05:05:53,478 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:53,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:53,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:53,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:53,690 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:53,691 INFO L85 PathProgramCache]: Analyzing trace with hash -362640618, now seen corresponding path program 1 times [2021-11-19 05:05:53,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:53,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791847929] [2021-11-19 05:05:53,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:53,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:53,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:53,693 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:53,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 05:05:53,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:53,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-19 05:05:53,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:53,860 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 8 treesize of output 7 [2021-11-19 05:05:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:53,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:54,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:54,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791847929] [2021-11-19 05:05:54,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791847929] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:54,526 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:54,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 7] imperfect sequences [] total 10 [2021-11-19 05:05:54,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912920305] [2021-11-19 05:05:54,527 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:54,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:05:54,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:54,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:05:54,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:05:54,528 INFO L87 Difference]: Start difference. First operand 53 states and 61 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:55,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:55,176 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2021-11-19 05:05:55,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:05:55,177 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-11-19 05:05:55,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:55,178 INFO L225 Difference]: With dead ends: 46 [2021-11-19 05:05:55,178 INFO L226 Difference]: Without dead ends: 46 [2021-11-19 05:05:55,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:05:55,180 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 29 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:55,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 175 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 05:05:55,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-19 05:05:55,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2021-11-19 05:05:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 38 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:55,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2021-11-19 05:05:55,189 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 15 [2021-11-19 05:05:55,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:55,190 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2021-11-19 05:05:55,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:55,190 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2021-11-19 05:05:55,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-19 05:05:55,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:55,191 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:55,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:55,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:55,398 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:55,398 INFO L85 PathProgramCache]: Analyzing trace with hash -2099457523, now seen corresponding path program 1 times [2021-11-19 05:05:55,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:55,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758779850] [2021-11-19 05:05:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:55,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:55,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:55,400 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:55,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-19 05:05:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:55,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-19 05:05:55,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:55,551 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 8 treesize of output 7 [2021-11-19 05:05:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:55,770 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:56,396 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:56,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:56,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758779850] [2021-11-19 05:05:56,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758779850] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:05:56,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:05:56,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-11-19 05:05:56,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915159281] [2021-11-19 05:05:56,397 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:05:56,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 05:05:56,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:56,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 05:05:56,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-19 05:05:56,398 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:56,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:56,855 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-11-19 05:05:56,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 05:05:56,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 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 14 [2021-11-19 05:05:56,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:56,859 INFO L225 Difference]: With dead ends: 58 [2021-11-19 05:05:56,859 INFO L226 Difference]: Without dead ends: 58 [2021-11-19 05:05:56,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-19 05:05:56,861 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 35 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:56,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 133 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 75 Invalid, 0 Unknown, 6 Unchecked, 0.4s Time] [2021-11-19 05:05:56,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-19 05:05:56,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2021-11-19 05:05:56,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 46 states have internal predecessors, (53), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 05:05:56,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 58 transitions. [2021-11-19 05:05:56,869 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 58 transitions. Word has length 14 [2021-11-19 05:05:56,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:56,869 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 58 transitions. [2021-11-19 05:05:56,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 10 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:56,870 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 58 transitions. [2021-11-19 05:05:56,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:05:56,871 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:56,871 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:56,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:57,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:57,076 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting sortErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:57,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:57,077 INFO L85 PathProgramCache]: Analyzing trace with hash 906251170, now seen corresponding path program 1 times [2021-11-19 05:05:57,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:57,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [485081190] [2021-11-19 05:05:57,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:57,082 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:57,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:57,084 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:57,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 05:05:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:05:57,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:57,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:05:57,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:05:57,343 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:57,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [485081190] [2021-11-19 05:05:57,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [485081190] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:57,344 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:57,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-19 05:05:57,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091452353] [2021-11-19 05:05:57,344 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:57,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:05:57,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:57,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:05:57,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:05:57,346 INFO L87 Difference]: Start difference. First operand 52 states and 58 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:57,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:57,429 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-11-19 05:05:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 05:05:57,430 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 05:05:57,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:57,431 INFO L225 Difference]: With dead ends: 60 [2021-11-19 05:05:57,431 INFO L226 Difference]: Without dead ends: 60 [2021-11-19 05:05:57,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-19 05:05:57,432 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 10 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:57,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 198 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:05:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-19 05:05:57,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2021-11-19 05:05:57,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 45 states have (on average 1.2444444444444445) internal successors, (56), 50 states have internal predecessors, (56), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:57,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2021-11-19 05:05:57,440 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 18 [2021-11-19 05:05:57,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:57,440 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2021-11-19 05:05:57,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:57,441 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2021-11-19 05:05:57,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-19 05:05:57,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:57,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:57,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 05:05:57,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:05:57,649 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting sortErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:05:57,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:57,650 INFO L85 PathProgramCache]: Analyzing trace with hash 1164416608, now seen corresponding path program 1 times [2021-11-19 05:05:57,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:05:57,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804231979] [2021-11-19 05:05:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:57,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:05:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:05:57,651 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:05:57,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 05:05:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:57,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:05:57,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:05:57,779 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 13 treesize of output 12 [2021-11-19 05:05:58,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:58,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:05:59,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:59,196 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:05:59,197 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804231979] [2021-11-19 05:05:59,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804231979] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 05:05:59,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 05:05:59,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2021-11-19 05:05:59,197 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423625331] [2021-11-19 05:05:59,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:59,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 05:05:59,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:05:59,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 05:05:59,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-11-19 05:05:59,199 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:59,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:59,951 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2021-11-19 05:05:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:05:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-19 05:05:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:59,954 INFO L225 Difference]: With dead ends: 62 [2021-11-19 05:05:59,954 INFO L226 Difference]: Without dead ends: 62 [2021-11-19 05:05:59,954 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:05:59,955 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 71 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:59,955 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 91 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 05:05:59,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-19 05:05:59,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2021-11-19 05:05:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 51 states have internal predecessors, (58), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:05:59,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2021-11-19 05:05:59,962 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 18 [2021-11-19 05:05:59,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:59,962 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2021-11-19 05:05:59,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:05:59,963 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2021-11-19 05:05:59,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-19 05:05:59,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:59,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:05:59,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:00,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:00,168 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:00,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1737176499, now seen corresponding path program 1 times [2021-11-19 05:06:00,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:00,169 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370697909] [2021-11-19 05:06:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:00,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:00,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:00,170 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:00,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 05:06:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:00,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:06:00,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:00,313 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 8 treesize of output 7 [2021-11-19 05:06:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:00,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:01,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:01,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:01,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370697909] [2021-11-19 05:06:01,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370697909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:06:01,364 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:06:01,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-19 05:06:01,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336110587] [2021-11-19 05:06:01,365 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:06:01,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 05:06:01,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:01,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 05:06:01,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 05:06:01,366 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:01,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:01,978 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-11-19 05:06:01,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:06:01,979 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-11-19 05:06:01,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:01,980 INFO L225 Difference]: With dead ends: 65 [2021-11-19 05:06:01,981 INFO L226 Difference]: Without dead ends: 65 [2021-11-19 05:06:01,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:06:01,982 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 27 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:01,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 144 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 99 Invalid, 0 Unknown, 7 Unchecked, 0.4s Time] [2021-11-19 05:06:01,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-11-19 05:06:01,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 62. [2021-11-19 05:06:01,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 51 states have (on average 1.2549019607843137) internal successors, (64), 55 states have internal predecessors, (64), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:01,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2021-11-19 05:06:01,989 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 19 [2021-11-19 05:06:01,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:01,989 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2021-11-19 05:06:01,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:01,990 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2021-11-19 05:06:01,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-19 05:06:01,991 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:01,991 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] [2021-11-19 05:06:02,000 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:02,196 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:02,196 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:02,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:02,197 INFO L85 PathProgramCache]: Analyzing trace with hash -971749880, now seen corresponding path program 1 times [2021-11-19 05:06:02,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:02,197 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1030208211] [2021-11-19 05:06:02,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:02,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:02,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:02,198 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:02,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-19 05:06:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:02,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 05:06:02,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:02,369 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 0 case distinctions, treesize of input 15 treesize of output 12 [2021-11-19 05:06:02,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:02,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:06,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:06,668 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:06,668 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1030208211] [2021-11-19 05:06:06,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1030208211] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 05:06:06,669 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:06:06,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2021-11-19 05:06:06,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710680507] [2021-11-19 05:06:06,669 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 05:06:06,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:06:06,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:06,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:06:06,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=36, Unknown=2, NotChecked=0, Total=56 [2021-11-19 05:06:06,671 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:08,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:08,858 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2021-11-19 05:06:08,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:06:08,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 20 [2021-11-19 05:06:08,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:08,860 INFO L225 Difference]: With dead ends: 65 [2021-11-19 05:06:08,860 INFO L226 Difference]: Without dead ends: 46 [2021-11-19 05:06:08,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=23, Invalid=46, Unknown=3, NotChecked=0, Total=72 [2021-11-19 05:06:08,861 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 32 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:08,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 51 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 59 Invalid, 0 Unknown, 60 Unchecked, 0.2s Time] [2021-11-19 05:06:08,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-19 05:06:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-19 05:06:08,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 39 states have (on average 1.2564102564102564) internal successors, (49), 41 states have internal predecessors, (49), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:08,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 53 transitions. [2021-11-19 05:06:08,865 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 53 transitions. Word has length 20 [2021-11-19 05:06:08,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:08,865 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 53 transitions. [2021-11-19 05:06:08,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-19 05:06:08,865 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 53 transitions. [2021-11-19 05:06:08,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:06:08,866 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:08,867 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] [2021-11-19 05:06:08,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:09,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:09,072 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:09,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:09,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2134236971, now seen corresponding path program 1 times [2021-11-19 05:06:09,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:09,073 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282546584] [2021-11-19 05:06:09,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:09,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:09,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:09,075 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:09,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 05:06:09,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:09,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:06:09,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:09,234 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 8 treesize of output 7 [2021-11-19 05:06:09,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:09,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:11,145 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:11,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:11,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282546584] [2021-11-19 05:06:11,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282546584] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:11,146 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:11,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-11-19 05:06:11,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527134085] [2021-11-19 05:06:11,146 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:11,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 05:06:11,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:11,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 05:06:11,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:06:11,151 INFO L87 Difference]: Start difference. First operand 46 states and 53 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:14,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:14,755 INFO L93 Difference]: Finished difference Result 84 states and 98 transitions. [2021-11-19 05:06:14,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:06:14,757 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-19 05:06:14,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:14,757 INFO L225 Difference]: With dead ends: 84 [2021-11-19 05:06:14,757 INFO L226 Difference]: Without dead ends: 84 [2021-11-19 05:06:14,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=187, Invalid=569, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:06:14,759 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 162 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:14,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [162 Valid, 119 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 179 Invalid, 0 Unknown, 19 Unchecked, 1.5s Time] [2021-11-19 05:06:14,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-11-19 05:06:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2021-11-19 05:06:14,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 61 states have (on average 1.278688524590164) internal successors, (78), 63 states have internal predecessors, (78), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:14,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-11-19 05:06:14,765 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 22 [2021-11-19 05:06:14,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:14,766 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-11-19 05:06:14,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 14 states have internal predecessors, (33), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:14,766 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-11-19 05:06:14,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-19 05:06:14,767 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:14,767 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] [2021-11-19 05:06:14,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:14,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:14,980 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting sortErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:14,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:14,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1630145898, now seen corresponding path program 1 times [2021-11-19 05:06:14,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:14,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673110032] [2021-11-19 05:06:14,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:14,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:14,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:14,981 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:14,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-19 05:06:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:15,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:06:15,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:15,118 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 13 treesize of output 12 [2021-11-19 05:06:16,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:16,221 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:17,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:17,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673110032] [2021-11-19 05:06:17,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673110032] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:17,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:17,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-11-19 05:06:17,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30523522] [2021-11-19 05:06:17,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:17,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:06:17,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:17,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:06:17,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:06:17,487 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:17,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:17,696 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2021-11-19 05:06:17,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:06:17,699 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-11-19 05:06:17,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:17,700 INFO L225 Difference]: With dead ends: 79 [2021-11-19 05:06:17,700 INFO L226 Difference]: Without dead ends: 79 [2021-11-19 05:06:17,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:06:17,701 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:17,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 180 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2021-11-19 05:06:17,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-11-19 05:06:17,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2021-11-19 05:06:17,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 70 states have (on average 1.3142857142857143) internal successors, (92), 72 states have internal predecessors, (92), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:17,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2021-11-19 05:06:17,708 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 23 [2021-11-19 05:06:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:17,715 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2021-11-19 05:06:17,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5) internal successors, (35), 13 states have internal predecessors, (35), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2021-11-19 05:06:17,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-19 05:06:17,719 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:17,720 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:17,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:17,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:17,932 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:17,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:17,932 INFO L85 PathProgramCache]: Analyzing trace with hash 607933459, now seen corresponding path program 2 times [2021-11-19 05:06:17,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:17,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [319732498] [2021-11-19 05:06:17,933 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:06:17,933 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:17,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:17,933 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:17,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-19 05:06:18,012 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:06:18,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:06:18,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:06:18,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:18,065 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 8 treesize of output 7 [2021-11-19 05:06:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:06:18,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:19,806 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:06:19,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:19,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [319732498] [2021-11-19 05:06:19,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [319732498] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:19,807 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:19,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-11-19 05:06:19,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531649152] [2021-11-19 05:06:19,807 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:19,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-19 05:06:19,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:19,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-19 05:06:19,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-11-19 05:06:19,809 INFO L87 Difference]: Start difference. First operand 77 states and 96 transitions. Second operand has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:22,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:22,501 INFO L93 Difference]: Finished difference Result 98 states and 121 transitions. [2021-11-19 05:06:22,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:06:22,502 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2021-11-19 05:06:22,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:22,503 INFO L225 Difference]: With dead ends: 98 [2021-11-19 05:06:22,503 INFO L226 Difference]: Without dead ends: 98 [2021-11-19 05:06:22,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:06:22,504 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 55 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:22,504 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 197 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 174 Invalid, 0 Unknown, 12 Unchecked, 1.0s Time] [2021-11-19 05:06:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-19 05:06:22,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 93. [2021-11-19 05:06:22,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 86 states have (on average 1.302325581395349) internal successors, (112), 88 states have internal predecessors, (112), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:22,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 116 transitions. [2021-11-19 05:06:22,510 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 116 transitions. Word has length 22 [2021-11-19 05:06:22,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:22,511 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 116 transitions. [2021-11-19 05:06:22,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 14 states have internal predecessors, (35), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:22,511 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 116 transitions. [2021-11-19 05:06:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-19 05:06:22,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:22,513 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:22,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:22,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:22,720 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1005084733, now seen corresponding path program 1 times [2021-11-19 05:06:22,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:22,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628049549] [2021-11-19 05:06:22,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:22,721 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:22,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:22,723 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:22,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 05:06:22,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:22,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:06:22,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:22,854 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 8 treesize of output 7 [2021-11-19 05:06:23,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:06:23,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:06:24,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:24,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628049549] [2021-11-19 05:06:24,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628049549] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:24,877 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:24,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-11-19 05:06:24,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345864219] [2021-11-19 05:06:24,877 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:24,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:06:24,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:06:24,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:06:24,879 INFO L87 Difference]: Start difference. First operand 93 states and 116 transitions. Second operand has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:25,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:25,799 INFO L93 Difference]: Finished difference Result 99 states and 122 transitions. [2021-11-19 05:06:25,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:06:25,801 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-11-19 05:06:25,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:25,802 INFO L225 Difference]: With dead ends: 99 [2021-11-19 05:06:25,802 INFO L226 Difference]: Without dead ends: 97 [2021-11-19 05:06:25,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:06:25,804 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 38 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:25,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 167 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 50 Unchecked, 0.8s Time] [2021-11-19 05:06:25,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2021-11-19 05:06:25,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2021-11-19 05:06:25,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 89 states have (on average 1.2921348314606742) internal successors, (115), 91 states have internal predecessors, (115), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:25,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2021-11-19 05:06:25,811 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 24 [2021-11-19 05:06:25,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:25,811 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2021-11-19 05:06:25,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:25,812 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2021-11-19 05:06:25,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-19 05:06:25,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:25,813 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:25,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:26,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:26,034 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting sortErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:26,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash 631185422, now seen corresponding path program 1 times [2021-11-19 05:06:26,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:26,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [797776104] [2021-11-19 05:06:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:26,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:26,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:26,036 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:26,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-19 05:06:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:26,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:06:26,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:26,187 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 13 treesize of output 12 [2021-11-19 05:06:27,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:06:27,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:06:28,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:28,285 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [797776104] [2021-11-19 05:06:28,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [797776104] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:28,285 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:28,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-11-19 05:06:28,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377571522] [2021-11-19 05:06:28,286 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:28,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:06:28,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:28,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:06:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:06:28,287 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:30,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:30,224 INFO L93 Difference]: Finished difference Result 132 states and 164 transitions. [2021-11-19 05:06:30,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:06:30,225 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-11-19 05:06:30,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:30,227 INFO L225 Difference]: With dead ends: 132 [2021-11-19 05:06:30,227 INFO L226 Difference]: Without dead ends: 132 [2021-11-19 05:06:30,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:06:30,228 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:30,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 154 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2021-11-19 05:06:30,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-11-19 05:06:30,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 120. [2021-11-19 05:06:30,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 112 states have (on average 1.3125) internal successors, (147), 114 states have internal predecessors, (147), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:30,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 152 transitions. [2021-11-19 05:06:30,235 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 152 transitions. Word has length 26 [2021-11-19 05:06:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:30,236 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 152 transitions. [2021-11-19 05:06:30,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.9285714285714284) internal successors, (41), 13 states have internal predecessors, (41), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 152 transitions. [2021-11-19 05:06:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-19 05:06:30,238 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:30,238 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:30,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:30,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:30,457 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:30,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:30,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1908088379, now seen corresponding path program 1 times [2021-11-19 05:06:30,458 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:30,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [656752298] [2021-11-19 05:06:30,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:06:30,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:30,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:30,460 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:30,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-19 05:06:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:06:30,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:06:30,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:30,601 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 8 treesize of output 7 [2021-11-19 05:06:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:31,044 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 05:06:32,623 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:32,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [656752298] [2021-11-19 05:06:32,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [656752298] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:32,623 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:32,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-11-19 05:06:32,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249955048] [2021-11-19 05:06:32,624 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:32,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-19 05:06:32,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:32,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-19 05:06:32,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:06:32,625 INFO L87 Difference]: Start difference. First operand 120 states and 152 transitions. Second operand has 18 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:33,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:33,433 INFO L93 Difference]: Finished difference Result 137 states and 171 transitions. [2021-11-19 05:06:33,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 05:06:33,436 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-11-19 05:06:33,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:33,437 INFO L225 Difference]: With dead ends: 137 [2021-11-19 05:06:33,437 INFO L226 Difference]: Without dead ends: 135 [2021-11-19 05:06:33,437 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:06:33,438 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 33 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:33,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 150 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 130 Invalid, 0 Unknown, 41 Unchecked, 0.6s Time] [2021-11-19 05:06:33,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-11-19 05:06:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 134. [2021-11-19 05:06:33,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 126 states have (on average 1.2857142857142858) internal successors, (162), 128 states have internal predecessors, (162), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:33,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 167 transitions. [2021-11-19 05:06:33,444 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 167 transitions. Word has length 27 [2021-11-19 05:06:33,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:33,445 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 167 transitions. [2021-11-19 05:06:33,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:33,445 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 167 transitions. [2021-11-19 05:06:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-19 05:06:33,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:33,447 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:33,471 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:33,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:33,660 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:33,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:33,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1578543552, now seen corresponding path program 2 times [2021-11-19 05:06:33,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:33,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076725686] [2021-11-19 05:06:33,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:06:33,661 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:33,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:33,661 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:33,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 05:06:33,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:06:33,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:06:33,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:06:33,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:33,821 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 8 treesize of output 7 [2021-11-19 05:06:34,414 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:06:34,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:36,663 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:06:36,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:36,664 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076725686] [2021-11-19 05:06:36,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076725686] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:36,664 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:36,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-11-19 05:06:36,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582108533] [2021-11-19 05:06:36,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:36,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 05:06:36,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:36,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 05:06:36,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:06:36,667 INFO L87 Difference]: Start difference. First operand 134 states and 167 transitions. Second operand has 17 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:42,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:06:42,794 INFO L93 Difference]: Finished difference Result 218 states and 266 transitions. [2021-11-19 05:06:42,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 05:06:42,796 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2021-11-19 05:06:42,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:06:42,798 INFO L225 Difference]: With dead ends: 218 [2021-11-19 05:06:42,798 INFO L226 Difference]: Without dead ends: 214 [2021-11-19 05:06:42,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=224, Invalid=768, Unknown=0, NotChecked=0, Total=992 [2021-11-19 05:06:42,799 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 157 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:06:42,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 178 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 307 Invalid, 0 Unknown, 15 Unchecked, 2.5s Time] [2021-11-19 05:06:42,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2021-11-19 05:06:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 163. [2021-11-19 05:06:42,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.2756410256410255) internal successors, (199), 158 states have internal predecessors, (199), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 203 transitions. [2021-11-19 05:06:42,807 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 203 transitions. Word has length 28 [2021-11-19 05:06:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:06:42,807 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 203 transitions. [2021-11-19 05:06:42,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.3125) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:06:42,808 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 203 transitions. [2021-11-19 05:06:42,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 05:06:42,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:06:42,809 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:06:42,836 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-19 05:06:43,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:06:43,021 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting sortErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:06:43,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:06:43,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1642072525, now seen corresponding path program 2 times [2021-11-19 05:06:43,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:06:43,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258928898] [2021-11-19 05:06:43,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:06:43,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:06:43,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:06:43,023 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:06:43,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-19 05:06:43,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:06:43,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:06:43,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 05:06:43,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:06:43,170 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 8 treesize of output 7 [2021-11-19 05:06:43,945 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:06:43,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:06:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-19 05:06:47,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:06:47,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258928898] [2021-11-19 05:06:47,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258928898] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:06:47,005 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:06:47,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 20 [2021-11-19 05:06:47,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395962830] [2021-11-19 05:06:47,005 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:06:47,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-19 05:06:47,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:06:47,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-19 05:06:47,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2021-11-19 05:06:47,007 INFO L87 Difference]: Start difference. First operand 163 states and 203 transitions. Second operand has 21 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:01,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:07:01,636 INFO L93 Difference]: Finished difference Result 265 states and 330 transitions. [2021-11-19 05:07:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 05:07:01,639 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 37 [2021-11-19 05:07:01,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:07:01,641 INFO L225 Difference]: With dead ends: 265 [2021-11-19 05:07:01,641 INFO L226 Difference]: Without dead ends: 265 [2021-11-19 05:07:01,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 635 ImplicationChecksByTransitivity, 13.0s TimeCoverageRelationStatistics Valid=575, Invalid=1875, Unknown=0, NotChecked=0, Total=2450 [2021-11-19 05:07:01,643 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 395 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:07:01,643 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 205 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 408 Invalid, 0 Unknown, 47 Unchecked, 3.6s Time] [2021-11-19 05:07:01,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2021-11-19 05:07:01,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 116. [2021-11-19 05:07:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:01,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 136 transitions. [2021-11-19 05:07:01,651 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 136 transitions. Word has length 37 [2021-11-19 05:07:01,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:07:01,651 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 136 transitions. [2021-11-19 05:07:01,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:01,652 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 136 transitions. [2021-11-19 05:07:01,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:07:01,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:07:01,653 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:07:01,668 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-11-19 05:07:01,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:07:01,865 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:07:01,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:07:01,865 INFO L85 PathProgramCache]: Analyzing trace with hash 635359296, now seen corresponding path program 3 times [2021-11-19 05:07:01,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:07:01,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896669497] [2021-11-19 05:07:01,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:07:01,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:07:01,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:07:01,867 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:07:01,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-19 05:07:02,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-19 05:07:02,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:07:02,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-19 05:07:02,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:07:02,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2021-11-19 05:07:03,041 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:07:03,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:07:08,851 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:07:08,852 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:07:08,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896669497] [2021-11-19 05:07:08,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896669497] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:07:08,852 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:07:08,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 28 [2021-11-19 05:07:08,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771442191] [2021-11-19 05:07:08,853 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:07:08,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 05:07:08,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:07:08,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 05:07:08,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:07:08,854 INFO L87 Difference]: Start difference. First operand 116 states and 136 transitions. Second operand has 28 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:15,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:07:15,314 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2021-11-19 05:07:15,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 05:07:15,318 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 05:07:15,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:07:15,319 INFO L225 Difference]: With dead ends: 163 [2021-11-19 05:07:15,319 INFO L226 Difference]: Without dead ends: 162 [2021-11-19 05:07:15,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=256, Invalid=1384, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 05:07:15,321 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 88 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:07:15,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 227 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 263 Invalid, 0 Unknown, 44 Unchecked, 2.2s Time] [2021-11-19 05:07:15,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-11-19 05:07:15,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 147. [2021-11-19 05:07:15,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 139 states have (on average 1.2158273381294964) internal successors, (169), 140 states have internal predecessors, (169), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:15,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 175 transitions. [2021-11-19 05:07:15,328 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 175 transitions. Word has length 38 [2021-11-19 05:07:15,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:07:15,329 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 175 transitions. [2021-11-19 05:07:15,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 2.5) internal successors, (65), 26 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:15,329 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 175 transitions. [2021-11-19 05:07:15,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:07:15,330 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:07:15,330 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:07:15,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (21)] Ended with exit code 0 [2021-11-19 05:07:15,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:07:15,544 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:07:15,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:07:15,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1179613040, now seen corresponding path program 2 times [2021-11-19 05:07:15,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:07:15,545 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [256287777] [2021-11-19 05:07:15,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:07:15,545 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:07:15,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:07:15,546 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:07:15,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-19 05:07:15,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:07:15,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:07:15,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:07:15,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:07:15,685 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 8 treesize of output 7 [2021-11-19 05:07:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 05:07:16,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:07:18,267 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 05:07:18,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:07:18,268 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [256287777] [2021-11-19 05:07:18,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [256287777] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:07:18,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:07:18,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-11-19 05:07:18,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39076537] [2021-11-19 05:07:18,268 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:07:18,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 05:07:18,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:07:18,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 05:07:18,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:07:18,270 INFO L87 Difference]: Start difference. First operand 147 states and 175 transitions. Second operand has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:19,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:07:19,957 INFO L93 Difference]: Finished difference Result 203 states and 241 transitions. [2021-11-19 05:07:19,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 05:07:19,959 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-11-19 05:07:19,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:07:19,960 INFO L225 Difference]: With dead ends: 203 [2021-11-19 05:07:19,960 INFO L226 Difference]: Without dead ends: 203 [2021-11-19 05:07:19,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=113, Invalid=537, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:07:19,962 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 92 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:07:19,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 199 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 143 Invalid, 0 Unknown, 56 Unchecked, 0.7s Time] [2021-11-19 05:07:19,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-11-19 05:07:19,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 167. [2021-11-19 05:07:19,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 159 states have (on average 1.2327044025157232) internal successors, (196), 160 states have internal predecessors, (196), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:19,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 202 transitions. [2021-11-19 05:07:19,970 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 202 transitions. Word has length 39 [2021-11-19 05:07:19,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:07:19,971 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 202 transitions. [2021-11-19 05:07:19,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:19,971 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 202 transitions. [2021-11-19 05:07:19,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-19 05:07:19,972 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:07:19,973 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:07:19,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-11-19 05:07:20,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:07:20,191 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:07:20,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:07:20,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1334126804, now seen corresponding path program 3 times [2021-11-19 05:07:20,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:07:20,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776616506] [2021-11-19 05:07:20,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:07:20,193 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:07:20,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:07:20,194 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:07:20,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-19 05:07:20,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-19 05:07:20,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:07:20,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-19 05:07:20,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:07:20,318 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 8 treesize of output 7 [2021-11-19 05:07:20,875 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 05:07:20,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:07:22,261 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-19 05:07:22,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:07:22,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776616506] [2021-11-19 05:07:22,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776616506] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:07:22,261 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:07:22,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-11-19 05:07:22,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327645508] [2021-11-19 05:07:22,262 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:07:22,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:07:22,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:07:22,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:07:22,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:07:22,263 INFO L87 Difference]: Start difference. First operand 167 states and 202 transitions. Second operand has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:23,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:07:23,038 INFO L93 Difference]: Finished difference Result 221 states and 272 transitions. [2021-11-19 05:07:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 05:07:23,051 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2021-11-19 05:07:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:07:23,053 INFO L225 Difference]: With dead ends: 221 [2021-11-19 05:07:23,053 INFO L226 Difference]: Without dead ends: 221 [2021-11-19 05:07:23,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:07:23,054 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 33 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:07:23,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 133 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 24 Unchecked, 0.4s Time] [2021-11-19 05:07:23,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-19 05:07:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 196. [2021-11-19 05:07:23,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 188 states have (on average 1.2606382978723405) internal successors, (237), 189 states have internal predecessors, (237), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:23,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 243 transitions. [2021-11-19 05:07:23,063 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 243 transitions. Word has length 39 [2021-11-19 05:07:23,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:07:23,063 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 243 transitions. [2021-11-19 05:07:23,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 243 transitions. [2021-11-19 05:07:23,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-19 05:07:23,065 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:07:23,065 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:07:23,077 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-11-19 05:07:23,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:07:23,276 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:07:23,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:07:23,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1521165855, now seen corresponding path program 3 times [2021-11-19 05:07:23,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:07:23,277 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1370692056] [2021-11-19 05:07:23,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:07:23,277 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:07:23,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:07:23,278 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:07:23,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-19 05:07:23,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-19 05:07:23,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:07:23,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:07:23,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:07:23,477 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 8 treesize of output 7 [2021-11-19 05:07:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:07:24,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:07:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:07:28,706 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:07:28,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1370692056] [2021-11-19 05:07:28,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1370692056] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:07:28,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:07:28,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-19 05:07:28,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666591904] [2021-11-19 05:07:28,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:07:28,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 05:07:28,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:07:28,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 05:07:28,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=400, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:07:28,707 INFO L87 Difference]: Start difference. First operand 196 states and 243 transitions. Second operand has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:35,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:07:43,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:07:48,788 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:07:54,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:07:54,787 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2021-11-19 05:07:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-19 05:07:54,788 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-11-19 05:07:54,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:07:54,790 INFO L225 Difference]: With dead ends: 238 [2021-11-19 05:07:54,790 INFO L226 Difference]: Without dead ends: 238 [2021-11-19 05:07:54,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 19.9s TimeCoverageRelationStatistics Valid=547, Invalid=1259, Unknown=0, NotChecked=0, Total=1806 [2021-11-19 05:07:54,792 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 155 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 39 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:07:54,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 323 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 452 Invalid, 2 Unknown, 31 Unchecked, 8.5s Time] [2021-11-19 05:07:54,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2021-11-19 05:07:54,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 228. [2021-11-19 05:07:54,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 220 states have (on average 1.259090909090909) internal successors, (277), 221 states have internal predecessors, (277), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 283 transitions. [2021-11-19 05:07:54,801 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 283 transitions. Word has length 38 [2021-11-19 05:07:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:07:54,802 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 283 transitions. [2021-11-19 05:07:54,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.9130434782608696) internal successors, (67), 24 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:07:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 283 transitions. [2021-11-19 05:07:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-19 05:07:54,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:07:54,803 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:07:54,819 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2021-11-19 05:07:55,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:07:55,015 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:07:55,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:07:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash 802118654, now seen corresponding path program 4 times [2021-11-19 05:07:55,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:07:55,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [634674299] [2021-11-19 05:07:55,016 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:07:55,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:07:55,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:07:55,017 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:07:55,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-19 05:07:55,144 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:07:55,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:07:55,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 05:07:55,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:07:55,173 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 8 treesize of output 7 [2021-11-19 05:07:56,146 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:07:56,146 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:00,420 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 2 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:00,420 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:00,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [634674299] [2021-11-19 05:08:00,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [634674299] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:00,420 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:00,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-11-19 05:08:00,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620489939] [2021-11-19 05:08:00,421 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:00,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 05:08:00,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:00,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 05:08:00,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:08:00,422 INFO L87 Difference]: Start difference. First operand 228 states and 283 transitions. Second operand has 26 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:04,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:04,189 INFO L93 Difference]: Finished difference Result 269 states and 333 transitions. [2021-11-19 05:08:04,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 05:08:04,192 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-11-19 05:08:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:04,194 INFO L225 Difference]: With dead ends: 269 [2021-11-19 05:08:04,194 INFO L226 Difference]: Without dead ends: 267 [2021-11-19 05:08:04,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=188, Invalid=1072, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 05:08:04,196 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 70 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:04,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 317 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 225 Invalid, 0 Unknown, 63 Unchecked, 1.3s Time] [2021-11-19 05:08:04,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-11-19 05:08:04,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 256. [2021-11-19 05:08:04,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 248 states have (on average 1.2701612903225807) internal successors, (315), 249 states have internal predecessors, (315), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 321 transitions. [2021-11-19 05:08:04,209 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 321 transitions. Word has length 41 [2021-11-19 05:08:04,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:04,209 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 321 transitions. [2021-11-19 05:08:04,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.9583333333333335) internal successors, (71), 24 states have internal predecessors, (71), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:04,210 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 321 transitions. [2021-11-19 05:08:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 05:08:04,212 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:04,212 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:04,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2021-11-19 05:08:04,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:04,434 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:08:04,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:04,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1430428375, now seen corresponding path program 1 times [2021-11-19 05:08:04,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:04,435 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029389975] [2021-11-19 05:08:04,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:04,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:04,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:04,437 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:04,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-19 05:08:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:04,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 05:08:04,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:04,597 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 8 treesize of output 7 [2021-11-19 05:08:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:05,537 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:09,033 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:08:09,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:09,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029389975] [2021-11-19 05:08:09,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029389975] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:09,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:09,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13] total 24 [2021-11-19 05:08:09,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059412572] [2021-11-19 05:08:09,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:09,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 05:08:09,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:09,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 05:08:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:08:09,036 INFO L87 Difference]: Start difference. First operand 256 states and 321 transitions. Second operand has 24 states, 22 states have (on average 3.5) internal successors, (77), 22 states have internal predecessors, (77), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:10,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:10,656 INFO L93 Difference]: Finished difference Result 286 states and 352 transitions. [2021-11-19 05:08:10,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:08:10,659 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 3.5) internal successors, (77), 22 states have internal predecessors, (77), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-11-19 05:08:10,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:10,660 INFO L225 Difference]: With dead ends: 286 [2021-11-19 05:08:10,660 INFO L226 Difference]: Without dead ends: 282 [2021-11-19 05:08:10,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=120, Invalid=636, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:08:10,662 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 61 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 82 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:10,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 307 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 174 Invalid, 0 Unknown, 82 Unchecked, 0.9s Time] [2021-11-19 05:08:10,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-11-19 05:08:10,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 260. [2021-11-19 05:08:10,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 251 states have (on average 1.247011952191235) internal successors, (313), 252 states have internal predecessors, (313), 6 states have call successors, (6), 6 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:10,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 320 transitions. [2021-11-19 05:08:10,672 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 320 transitions. Word has length 44 [2021-11-19 05:08:10,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:10,673 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 320 transitions. [2021-11-19 05:08:10,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 3.5) internal successors, (77), 22 states have internal predecessors, (77), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 320 transitions. [2021-11-19 05:08:10,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:08:10,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:10,675 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:10,691 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2021-11-19 05:08:10,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:10,888 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:08:10,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:10,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1838178165, now seen corresponding path program 1 times [2021-11-19 05:08:10,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:10,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419372717] [2021-11-19 05:08:10,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:08:10,889 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:10,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:10,891 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:10,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-19 05:08:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:08:11,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-19 05:08:11,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:11,084 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 13 treesize of output 12 [2021-11-19 05:08:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 05:08:12,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:14,259 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 8 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-19 05:08:14,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:14,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419372717] [2021-11-19 05:08:14,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419372717] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:14,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:14,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14 [2021-11-19 05:08:14,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923800854] [2021-11-19 05:08:14,260 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:14,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 05:08:14,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:14,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 05:08:14,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:08:14,263 INFO L87 Difference]: Start difference. First operand 260 states and 320 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:14,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:14,545 INFO L93 Difference]: Finished difference Result 410 states and 509 transitions. [2021-11-19 05:08:14,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 05:08:14,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-11-19 05:08:14,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:14,548 INFO L225 Difference]: With dead ends: 410 [2021-11-19 05:08:14,548 INFO L226 Difference]: Without dead ends: 410 [2021-11-19 05:08:14,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:08:14,549 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 33 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:14,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 207 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 38 Unchecked, 0.1s Time] [2021-11-19 05:08:14,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-19 05:08:14,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 310. [2021-11-19 05:08:14,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 301 states have (on average 1.239202657807309) internal successors, (373), 302 states have internal predecessors, (373), 6 states have call successors, (6), 6 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:14,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 380 transitions. [2021-11-19 05:08:14,562 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 380 transitions. Word has length 45 [2021-11-19 05:08:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:14,562 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 380 transitions. [2021-11-19 05:08:14,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:14,562 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 380 transitions. [2021-11-19 05:08:14,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:08:14,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:14,564 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:14,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-19 05:08:14,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:14,777 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:08:14,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:14,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1669250549, now seen corresponding path program 2 times [2021-11-19 05:08:14,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:14,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1364059971] [2021-11-19 05:08:14,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:08:14,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:14,778 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:14,779 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:14,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-19 05:08:14,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:08:14,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:08:14,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 05:08:14,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:14,936 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 8 treesize of output 7 [2021-11-19 05:08:15,740 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 05:08:15,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:17,394 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 05:08:17,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:17,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1364059971] [2021-11-19 05:08:17,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1364059971] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:17,395 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:17,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-11-19 05:08:17,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524957643] [2021-11-19 05:08:17,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:17,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 05:08:17,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:17,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 05:08:17,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-19 05:08:17,397 INFO L87 Difference]: Start difference. First operand 310 states and 380 transitions. Second operand has 17 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:17,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:17,555 INFO L93 Difference]: Finished difference Result 316 states and 387 transitions. [2021-11-19 05:08:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:08:17,555 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-11-19 05:08:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:17,557 INFO L225 Difference]: With dead ends: 316 [2021-11-19 05:08:17,558 INFO L226 Difference]: Without dead ends: 316 [2021-11-19 05:08:17,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2021-11-19 05:08:17,559 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 16 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:17,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 146 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 35 Unchecked, 0.1s Time] [2021-11-19 05:08:17,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-11-19 05:08:17,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 193. [2021-11-19 05:08:17,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 184 states have (on average 1.201086956521739) internal successors, (221), 185 states have internal predecessors, (221), 6 states have call successors, (6), 6 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:17,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 228 transitions. [2021-11-19 05:08:17,567 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 228 transitions. Word has length 45 [2021-11-19 05:08:17,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:17,567 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 228 transitions. [2021-11-19 05:08:17,568 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0625) internal successors, (65), 15 states have internal predecessors, (65), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:17,568 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 228 transitions. [2021-11-19 05:08:17,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-19 05:08:17,569 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:17,569 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:17,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-19 05:08:17,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:17,781 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:08:17,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:17,781 INFO L85 PathProgramCache]: Analyzing trace with hash 114216027, now seen corresponding path program 5 times [2021-11-19 05:08:17,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:17,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239587781] [2021-11-19 05:08:17,782 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:08:17,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:17,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:17,783 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:17,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-19 05:08:17,955 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-19 05:08:17,955 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:08:17,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-19 05:08:17,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:18,249 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 05:08:18,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 05:08:18,958 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:18,958 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239587781] [2021-11-19 05:08:18,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239587781] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:18,959 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:18,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-11-19 05:08:18,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58995299] [2021-11-19 05:08:18,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:18,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:08:18,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:18,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:08:18,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:08:18,960 INFO L87 Difference]: Start difference. First operand 193 states and 228 transitions. Second operand has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:20,486 INFO L93 Difference]: Finished difference Result 256 states and 301 transitions. [2021-11-19 05:08:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 05:08:20,487 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2021-11-19 05:08:20,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:20,489 INFO L225 Difference]: With dead ends: 256 [2021-11-19 05:08:20,489 INFO L226 Difference]: Without dead ends: 256 [2021-11-19 05:08:20,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:08:20,490 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 159 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:20,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 292 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 05:08:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-19 05:08:20,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 193. [2021-11-19 05:08:20,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 184 states have (on average 1.190217391304348) internal successors, (219), 185 states have internal predecessors, (219), 6 states have call successors, (6), 6 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 226 transitions. [2021-11-19 05:08:20,497 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 226 transitions. Word has length 45 [2021-11-19 05:08:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:20,497 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 226 transitions. [2021-11-19 05:08:20,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.85) internal successors, (57), 18 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:20,497 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 226 transitions. [2021-11-19 05:08:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-19 05:08:20,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:20,499 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:20,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-19 05:08:20,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:20,715 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:08:20,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:20,716 INFO L85 PathProgramCache]: Analyzing trace with hash -92659642, now seen corresponding path program 4 times [2021-11-19 05:08:20,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:20,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614259305] [2021-11-19 05:08:20,717 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:08:20,717 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:20,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:20,718 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:20,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-19 05:08:20,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:08:20,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:08:20,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-19 05:08:20,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:20,918 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 8 treesize of output 7 [2021-11-19 05:08:22,081 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 05:08:22,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-19 05:08:26,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:26,213 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614259305] [2021-11-19 05:08:26,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614259305] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:26,213 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:26,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-11-19 05:08:26,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688404286] [2021-11-19 05:08:26,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:26,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-19 05:08:26,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:26,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-19 05:08:26,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2021-11-19 05:08:26,215 INFO L87 Difference]: Start difference. First operand 193 states and 226 transitions. Second operand has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:40,989 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:08:43,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:08:43,290 INFO L93 Difference]: Finished difference Result 344 states and 405 transitions. [2021-11-19 05:08:43,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-19 05:08:43,292 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-11-19 05:08:43,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:08:43,294 INFO L225 Difference]: With dead ends: 344 [2021-11-19 05:08:43,294 INFO L226 Difference]: Without dead ends: 344 [2021-11-19 05:08:43,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 719 ImplicationChecksByTransitivity, 13.9s TimeCoverageRelationStatistics Valid=583, Invalid=2069, Unknown=0, NotChecked=0, Total=2652 [2021-11-19 05:08:43,296 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 369 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 520 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 520 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 128 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:08:43,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 282 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 520 Invalid, 0 Unknown, 128 Unchecked, 6.0s Time] [2021-11-19 05:08:43,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-19 05:08:43,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 258. [2021-11-19 05:08:43,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 251 states have (on average 1.203187250996016) internal successors, (302), 252 states have internal predecessors, (302), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 307 transitions. [2021-11-19 05:08:43,306 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 307 transitions. Word has length 46 [2021-11-19 05:08:43,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:08:43,306 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 307 transitions. [2021-11-19 05:08:43,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 22 states have internal predecessors, (57), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:08:43,307 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 307 transitions. [2021-11-19 05:08:43,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-11-19 05:08:43,308 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:08:43,308 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:08:43,328 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2021-11-19 05:08:43,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:08:43,522 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:08:43,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:08:43,523 INFO L85 PathProgramCache]: Analyzing trace with hash -39586297, now seen corresponding path program 3 times [2021-11-19 05:08:43,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:08:43,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [309216166] [2021-11-19 05:08:43,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:08:43,523 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:08:43,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:08:43,524 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:08:43,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-19 05:08:43,668 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-19 05:08:43,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:08:43,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-19 05:08:43,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:08:43,704 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 8 treesize of output 7 [2021-11-19 05:08:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 05:08:44,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:08:47,696 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-19 05:08:47,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:08:47,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [309216166] [2021-11-19 05:08:47,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [309216166] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:08:47,697 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:08:47,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-11-19 05:08:47,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502196833] [2021-11-19 05:08:47,697 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:08:47,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-19 05:08:47,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:08:47,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-19 05:08:47,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2021-11-19 05:08:47,698 INFO L87 Difference]: Start difference. First operand 258 states and 307 transitions. Second operand has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:07,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:07,901 INFO L93 Difference]: Finished difference Result 474 states and 557 transitions. [2021-11-19 05:09:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-19 05:09:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 47 [2021-11-19 05:09:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:07,907 INFO L225 Difference]: With dead ends: 474 [2021-11-19 05:09:07,907 INFO L226 Difference]: Without dead ends: 474 [2021-11-19 05:09:07,908 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 816 ImplicationChecksByTransitivity, 17.9s TimeCoverageRelationStatistics Valid=659, Invalid=2311, Unknown=0, NotChecked=0, Total=2970 [2021-11-19 05:09:07,910 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 554 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:07,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 215 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 407 Invalid, 0 Unknown, 54 Unchecked, 4.3s Time] [2021-11-19 05:09:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-11-19 05:09:07,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 379. [2021-11-19 05:09:07,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 372 states have (on average 1.2016129032258065) internal successors, (447), 373 states have internal predecessors, (447), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:07,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 452 transitions. [2021-11-19 05:09:07,923 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 452 transitions. Word has length 47 [2021-11-19 05:09:07,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:07,924 INFO L470 AbstractCegarLoop]: Abstraction has 379 states and 452 transitions. [2021-11-19 05:09:07,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.5714285714285716) internal successors, (75), 20 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:07,925 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 452 transitions. [2021-11-19 05:09:07,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-11-19 05:09:07,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:07,926 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:07,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:08,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:09:08,141 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:09:08,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:08,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1133097275, now seen corresponding path program 4 times [2021-11-19 05:09:08,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:09:08,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644778634] [2021-11-19 05:09:08,142 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:09:08,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:09:08,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:09:08,144 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:09:08,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-19 05:09:08,335 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:09:08,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:08,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:09:08,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:08,371 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 8 treesize of output 7 [2021-11-19 05:09:09,141 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:09:09,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:12,075 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:09:12,075 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:09:12,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644778634] [2021-11-19 05:09:12,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644778634] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:12,075 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:12,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-11-19 05:09:12,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491185629] [2021-11-19 05:09:12,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:12,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 05:09:12,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:09:12,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 05:09:12,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-19 05:09:12,077 INFO L87 Difference]: Start difference. First operand 379 states and 452 transitions. Second operand has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 18 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:25,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:25,931 INFO L93 Difference]: Finished difference Result 724 states and 871 transitions. [2021-11-19 05:09:25,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-19 05:09:25,933 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 18 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2021-11-19 05:09:25,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:25,936 INFO L225 Difference]: With dead ends: 724 [2021-11-19 05:09:25,936 INFO L226 Difference]: Without dead ends: 724 [2021-11-19 05:09:25,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 12.2s TimeCoverageRelationStatistics Valid=562, Invalid=2090, Unknown=0, NotChecked=0, Total=2652 [2021-11-19 05:09:25,938 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 317 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:25,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 207 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 396 Invalid, 0 Unknown, 42 Unchecked, 3.5s Time] [2021-11-19 05:09:25,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2021-11-19 05:09:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 607. [2021-11-19 05:09:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 600 states have (on average 1.2216666666666667) internal successors, (733), 601 states have internal predecessors, (733), 4 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 738 transitions. [2021-11-19 05:09:25,967 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 738 transitions. Word has length 50 [2021-11-19 05:09:25,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:25,968 INFO L470 AbstractCegarLoop]: Abstraction has 607 states and 738 transitions. [2021-11-19 05:09:25,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 18 states have internal predecessors, (81), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 738 transitions. [2021-11-19 05:09:25,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-11-19 05:09:25,970 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:25,970 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:25,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:26,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:09:26,183 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:09:26,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1292309586, now seen corresponding path program 5 times [2021-11-19 05:09:26,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:09:26,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561269373] [2021-11-19 05:09:26,184 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:09:26,184 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:09:26,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:09:26,185 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:09:26,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-19 05:09:26,331 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-11-19 05:09:26,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:26,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 05:09:26,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:26,718 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 05:09:26,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:27,761 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 35 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 05:09:27,761 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:09:27,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561269373] [2021-11-19 05:09:27,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561269373] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:27,762 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:27,762 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2021-11-19 05:09:27,762 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875595769] [2021-11-19 05:09:27,762 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:27,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 05:09:27,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:09:27,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 05:09:27,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-11-19 05:09:27,763 INFO L87 Difference]: Start difference. First operand 607 states and 738 transitions. Second operand has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:29,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:29,456 INFO L93 Difference]: Finished difference Result 746 states and 876 transitions. [2021-11-19 05:09:29,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 05:09:29,458 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2021-11-19 05:09:29,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:29,462 INFO L225 Difference]: With dead ends: 746 [2021-11-19 05:09:29,462 INFO L226 Difference]: Without dead ends: 705 [2021-11-19 05:09:29,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=141, Invalid=459, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:09:29,463 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 138 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:29,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 160 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 212 Invalid, 0 Unknown, 20 Unchecked, 0.8s Time] [2021-11-19 05:09:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-11-19 05:09:29,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 569. [2021-11-19 05:09:29,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 563 states have (on average 1.1953818827708704) internal successors, (673), 564 states have internal predecessors, (673), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:29,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 677 transitions. [2021-11-19 05:09:29,490 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 677 transitions. Word has length 56 [2021-11-19 05:09:29,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:29,491 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 677 transitions. [2021-11-19 05:09:29,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5625) internal successors, (57), 16 states have internal predecessors, (57), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:29,491 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 677 transitions. [2021-11-19 05:09:29,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-19 05:09:29,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:29,493 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:29,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:29,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:09:29,704 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:09:29,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:29,705 INFO L85 PathProgramCache]: Analyzing trace with hash 939915651, now seen corresponding path program 5 times [2021-11-19 05:09:29,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:09:29,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325418469] [2021-11-19 05:09:29,705 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:09:29,705 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:09:29,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:09:29,706 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:09:29,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-19 05:09:30,035 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2021-11-19 05:09:30,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:30,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 05:09:30,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:30,087 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 8 treesize of output 7 [2021-11-19 05:09:31,373 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 33 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:31,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:37,975 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:09:37,976 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:09:37,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325418469] [2021-11-19 05:09:37,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325418469] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:37,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:37,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2021-11-19 05:09:37,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494326308] [2021-11-19 05:09:37,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:37,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-11-19 05:09:37,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:09:37,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-11-19 05:09:37,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=960, Unknown=0, NotChecked=0, Total=1122 [2021-11-19 05:09:37,977 INFO L87 Difference]: Start difference. First operand 569 states and 677 transitions. Second operand has 34 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:42,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:42,951 INFO L93 Difference]: Finished difference Result 663 states and 786 transitions. [2021-11-19 05:09:42,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-19 05:09:42,966 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-19 05:09:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:42,969 INFO L225 Difference]: With dead ends: 663 [2021-11-19 05:09:42,970 INFO L226 Difference]: Without dead ends: 661 [2021-11-19 05:09:42,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=250, Invalid=1390, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 05:09:42,971 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 116 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:42,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 486 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 377 Invalid, 0 Unknown, 65 Unchecked, 2.6s Time] [2021-11-19 05:09:42,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-11-19 05:09:42,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 620. [2021-11-19 05:09:42,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 612 states have (on average 1.2026143790849673) internal successors, (736), 613 states have internal predecessors, (736), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 742 transitions. [2021-11-19 05:09:42,989 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 742 transitions. Word has length 62 [2021-11-19 05:09:42,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:42,990 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 742 transitions. [2021-11-19 05:09:42,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.53125) internal successors, (113), 32 states have internal predecessors, (113), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:42,990 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 742 transitions. [2021-11-19 05:09:42,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 05:09:42,993 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:42,993 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:43,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-19 05:09:43,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:09:43,213 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:09:43,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2035532353, now seen corresponding path program 6 times [2021-11-19 05:09:43,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:09:43,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593557172] [2021-11-19 05:09:43,214 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 05:09:43,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:09:43,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:09:43,215 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:09:43,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-19 05:09:43,472 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-19 05:09:43,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:43,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 05:09:43,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:43,526 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 8 treesize of output 7 [2021-11-19 05:09:45,112 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 67 proven. 75 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:09:45,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:09:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:09:52,647 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:09:52,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593557172] [2021-11-19 05:09:52,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593557172] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:09:52,647 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:09:52,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-11-19 05:09:52,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972451805] [2021-11-19 05:09:52,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:09:52,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-19 05:09:52,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:09:52,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-19 05:09:52,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1007, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 05:09:52,649 INFO L87 Difference]: Start difference. First operand 620 states and 742 transitions. Second operand has 35 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 states have internal predecessors, (109), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:09:59,158 INFO L93 Difference]: Finished difference Result 1003 states and 1235 transitions. [2021-11-19 05:09:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-19 05:09:59,161 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 states have internal predecessors, (109), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-11-19 05:09:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:09:59,165 INFO L225 Difference]: With dead ends: 1003 [2021-11-19 05:09:59,165 INFO L226 Difference]: Without dead ends: 999 [2021-11-19 05:09:59,166 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=330, Invalid=1926, Unknown=0, NotChecked=0, Total=2256 [2021-11-19 05:09:59,166 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 95 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 05:09:59,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 356 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 266 Invalid, 0 Unknown, 66 Unchecked, 1.8s Time] [2021-11-19 05:09:59,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 999 states. [2021-11-19 05:09:59,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 999 to 924. [2021-11-19 05:09:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 915 states have (on average 1.2557377049180327) internal successors, (1149), 916 states have internal predecessors, (1149), 6 states have call successors, (6), 6 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:59,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1156 transitions. [2021-11-19 05:09:59,197 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1156 transitions. Word has length 65 [2021-11-19 05:09:59,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:09:59,198 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1156 transitions. [2021-11-19 05:09:59,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 3.303030303030303) internal successors, (109), 33 states have internal predecessors, (109), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:09:59,198 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1156 transitions. [2021-11-19 05:09:59,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-19 05:09:59,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:09:59,201 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:09:59,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2021-11-19 05:09:59,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:09:59,419 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:09:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:09:59,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1975561126, now seen corresponding path program 2 times [2021-11-19 05:09:59,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:09:59,420 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773165193] [2021-11-19 05:09:59,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:09:59,421 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:09:59,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:09:59,421 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:09:59,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-19 05:09:59,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:09:59,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:09:59,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2021-11-19 05:09:59,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:09:59,601 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 8 treesize of output 7 [2021-11-19 05:10:01,065 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 05:10:01,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:10:08,555 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-19 05:10:08,555 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:10:08,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773165193] [2021-11-19 05:10:08,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773165193] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:10:08,556 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:10:08,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2021-11-19 05:10:08,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407999272] [2021-11-19 05:10:08,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:10:08,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-19 05:10:08,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:10:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-19 05:10:08,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=709, Unknown=0, NotChecked=0, Total=870 [2021-11-19 05:10:08,557 INFO L87 Difference]: Start difference. First operand 924 states and 1156 transitions. Second operand has 30 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 28 states have internal predecessors, (109), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:12,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:11:12,706 INFO L93 Difference]: Finished difference Result 1313 states and 1625 transitions. [2021-11-19 05:11:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2021-11-19 05:11:12,709 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 28 states have internal predecessors, (109), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 68 [2021-11-19 05:11:12,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:11:12,714 INFO L225 Difference]: With dead ends: 1313 [2021-11-19 05:11:12,714 INFO L226 Difference]: Without dead ends: 1313 [2021-11-19 05:11:12,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 105 SyntacticMatches, 2 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2931 ImplicationChecksByTransitivity, 53.1s TimeCoverageRelationStatistics Valid=1920, Invalid=7010, Unknown=0, NotChecked=0, Total=8930 [2021-11-19 05:11:12,717 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 789 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 1526 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:11:12,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 749 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1526 Invalid, 0 Unknown, 249 Unchecked, 15.4s Time] [2021-11-19 05:11:12,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2021-11-19 05:11:12,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1176. [2021-11-19 05:11:12,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 1168 states have (on average 1.2482876712328768) internal successors, (1458), 1169 states have internal predecessors, (1458), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:12,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1464 transitions. [2021-11-19 05:11:12,747 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1464 transitions. Word has length 68 [2021-11-19 05:11:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:11:12,747 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1464 transitions. [2021-11-19 05:11:12,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.7586206896551726) internal successors, (109), 28 states have internal predecessors, (109), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:12,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1464 transitions. [2021-11-19 05:11:12,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:11:12,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:11:12,751 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:11:12,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-11-19 05:11:12,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:11:12,964 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:11:12,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:11:12,965 INFO L85 PathProgramCache]: Analyzing trace with hash -209064659, now seen corresponding path program 7 times [2021-11-19 05:11:12,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:11:12,965 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1308101876] [2021-11-19 05:11:12,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 05:11:12,965 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:11:12,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:11:12,966 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:11:12,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-19 05:11:13,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:11:13,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-19 05:11:13,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:11:13,171 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 8 treesize of output 7 [2021-11-19 05:11:14,304 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 05:11:14,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:11:18,490 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 0 proven. 129 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 05:11:18,490 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:11:18,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1308101876] [2021-11-19 05:11:18,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1308101876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:11:18,490 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:11:18,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2021-11-19 05:11:18,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181861851] [2021-11-19 05:11:18,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:11:18,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-19 05:11:18,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:11:18,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-19 05:11:18,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=539, Unknown=0, NotChecked=0, Total=650 [2021-11-19 05:11:18,492 INFO L87 Difference]: Start difference. First operand 1176 states and 1464 transitions. Second operand has 26 states, 25 states have (on average 3.64) internal successors, (91), 24 states have internal predecessors, (91), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:51,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:11:51,185 INFO L93 Difference]: Finished difference Result 2020 states and 2547 transitions. [2021-11-19 05:11:51,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2021-11-19 05:11:51,187 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.64) internal successors, (91), 24 states have internal predecessors, (91), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2021-11-19 05:11:51,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:11:51,194 INFO L225 Difference]: With dead ends: 2020 [2021-11-19 05:11:51,194 INFO L226 Difference]: Without dead ends: 2020 [2021-11-19 05:11:51,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2370 ImplicationChecksByTransitivity, 29.5s TimeCoverageRelationStatistics Valid=1394, Invalid=6616, Unknown=0, NotChecked=0, Total=8010 [2021-11-19 05:11:51,197 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 190 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 145 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:11:51,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 304 Invalid, 778 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 587 Invalid, 0 Unknown, 145 Unchecked, 6.0s Time] [2021-11-19 05:11:51,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2021-11-19 05:11:51,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 1864. [2021-11-19 05:11:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1856 states have (on average 1.2855603448275863) internal successors, (2386), 1857 states have internal predecessors, (2386), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:51,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2392 transitions. [2021-11-19 05:11:51,250 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2392 transitions. Word has length 69 [2021-11-19 05:11:51,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:11:51,250 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 2392 transitions. [2021-11-19 05:11:51,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.64) internal successors, (91), 24 states have internal predecessors, (91), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:51,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2392 transitions. [2021-11-19 05:11:51,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 05:11:51,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:11:51,254 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:11:51,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-19 05:11:51,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:11:51,468 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:11:51,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:11:51,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1804479459, now seen corresponding path program 6 times [2021-11-19 05:11:51,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:11:51,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809937092] [2021-11-19 05:11:51,470 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 05:11:51,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:11:51,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:11:51,471 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:11:51,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-19 05:11:51,578 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-11-19 05:11:51,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:11:51,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-19 05:11:51,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:11:51,605 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 8 treesize of output 7 [2021-11-19 05:11:52,642 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 24 proven. 50 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 05:11:52,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:11:55,334 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 46 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-19 05:11:55,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:11:55,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809937092] [2021-11-19 05:11:55,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809937092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:11:55,334 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:11:55,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 18 [2021-11-19 05:11:55,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865572067] [2021-11-19 05:11:55,335 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:11:55,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-19 05:11:55,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:11:55,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-19 05:11:55,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2021-11-19 05:11:55,336 INFO L87 Difference]: Start difference. First operand 1864 states and 2392 transitions. Second operand has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 17 states have internal predecessors, (95), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:11:57,129 INFO L93 Difference]: Finished difference Result 1891 states and 2416 transitions. [2021-11-19 05:11:57,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 05:11:57,130 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 17 states have internal predecessors, (95), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 70 [2021-11-19 05:11:57,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:11:57,138 INFO L225 Difference]: With dead ends: 1891 [2021-11-19 05:11:57,138 INFO L226 Difference]: Without dead ends: 1891 [2021-11-19 05:11:57,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:11:57,139 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 98 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:11:57,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 241 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 171 Invalid, 0 Unknown, 40 Unchecked, 0.6s Time] [2021-11-19 05:11:57,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2021-11-19 05:11:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1365. [2021-11-19 05:11:57,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1357 states have (on average 1.2999263080324244) internal successors, (1764), 1358 states have internal predecessors, (1764), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:57,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1770 transitions. [2021-11-19 05:11:57,178 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1770 transitions. Word has length 70 [2021-11-19 05:11:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:11:57,179 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 1770 transitions. [2021-11-19 05:11:57,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 5.277777777777778) internal successors, (95), 17 states have internal predecessors, (95), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:11:57,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1770 transitions. [2021-11-19 05:11:57,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:11:57,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:11:57,182 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:11:57,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-19 05:11:57,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:11:57,394 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:11:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:11:57,394 INFO L85 PathProgramCache]: Analyzing trace with hash 119431048, now seen corresponding path program 7 times [2021-11-19 05:11:57,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:11:57,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [788695861] [2021-11-19 05:11:57,395 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-19 05:11:57,395 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:11:57,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:11:57,396 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:11:57,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-19 05:11:57,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:11:57,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 05:11:57,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:11:57,600 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 8 treesize of output 7 [2021-11-19 05:11:58,592 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 101 proven. 26 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 05:11:58,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:12:03,235 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:12:03,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:12:03,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [788695861] [2021-11-19 05:12:03,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [788695861] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:12:03,235 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:12:03,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2021-11-19 05:12:03,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292277174] [2021-11-19 05:12:03,236 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:12:03,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 05:12:03,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:12:03,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 05:12:03,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:12:03,237 INFO L87 Difference]: Start difference. First operand 1365 states and 1770 transitions. Second operand has 28 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:04,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:12:04,650 INFO L93 Difference]: Finished difference Result 1775 states and 2241 transitions. [2021-11-19 05:12:04,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 05:12:04,652 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 05:12:04,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:12:04,661 INFO L225 Difference]: With dead ends: 1775 [2021-11-19 05:12:04,661 INFO L226 Difference]: Without dead ends: 1753 [2021-11-19 05:12:04,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2021-11-19 05:12:04,662 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:12:04,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 320 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 228 Invalid, 0 Unknown, 41 Unchecked, 1.1s Time] [2021-11-19 05:12:04,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2021-11-19 05:12:04,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1676. [2021-11-19 05:12:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1676 states, 1668 states have (on average 1.2691846522781776) internal successors, (2117), 1669 states have internal predecessors, (2117), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:04,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1676 states to 1676 states and 2123 transitions. [2021-11-19 05:12:04,696 INFO L78 Accepts]: Start accepts. Automaton has 1676 states and 2123 transitions. Word has length 71 [2021-11-19 05:12:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:12:04,696 INFO L470 AbstractCegarLoop]: Abstraction has 1676 states and 2123 transitions. [2021-11-19 05:12:04,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.384615384615385) internal successors, (114), 26 states have internal predecessors, (114), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1676 states and 2123 transitions. [2021-11-19 05:12:04,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:12:04,699 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:12:04,699 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:12:04,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-11-19 05:12:04,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:12:04,924 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:12:04,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:12:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash -82437034, now seen corresponding path program 8 times [2021-11-19 05:12:04,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:12:04,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1179400323] [2021-11-19 05:12:04,925 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:12:04,925 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:12:04,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:12:04,927 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:12:04,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-19 05:12:05,085 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:12:05,085 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:12:05,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 05:12:05,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:12:05,118 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 8 treesize of output 7 [2021-11-19 05:12:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 101 proven. 26 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 05:12:06,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:12:10,870 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 142 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:12:10,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:12:10,870 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1179400323] [2021-11-19 05:12:10,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1179400323] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:12:10,870 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:12:10,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2021-11-19 05:12:10,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610406396] [2021-11-19 05:12:10,871 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:12:10,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 05:12:10,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:12:10,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 05:12:10,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:12:10,872 INFO L87 Difference]: Start difference. First operand 1676 states and 2123 transitions. Second operand has 28 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:12,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:12:12,377 INFO L93 Difference]: Finished difference Result 1896 states and 2395 transitions. [2021-11-19 05:12:12,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:12:12,379 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 05:12:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:12:12,386 INFO L225 Difference]: With dead ends: 1896 [2021-11-19 05:12:12,386 INFO L226 Difference]: Without dead ends: 1890 [2021-11-19 05:12:12,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2021-11-19 05:12:12,387 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 55 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:12:12,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 393 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 239 Invalid, 0 Unknown, 45 Unchecked, 1.2s Time] [2021-11-19 05:12:12,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2021-11-19 05:12:12,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1816. [2021-11-19 05:12:12,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1816 states, 1808 states have (on average 1.271570796460177) internal successors, (2299), 1809 states have internal predecessors, (2299), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:12,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1816 states to 1816 states and 2305 transitions. [2021-11-19 05:12:12,421 INFO L78 Accepts]: Start accepts. Automaton has 1816 states and 2305 transitions. Word has length 71 [2021-11-19 05:12:12,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:12:12,421 INFO L470 AbstractCegarLoop]: Abstraction has 1816 states and 2305 transitions. [2021-11-19 05:12:12,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.3076923076923075) internal successors, (112), 26 states have internal predecessors, (112), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:12,422 INFO L276 IsEmpty]: Start isEmpty. Operand 1816 states and 2305 transitions. [2021-11-19 05:12:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:12:12,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:12:12,425 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:12:12,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-11-19 05:12:12,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:12:12,638 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:12:12,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:12:12,638 INFO L85 PathProgramCache]: Analyzing trace with hash 803899976, now seen corresponding path program 9 times [2021-11-19 05:12:12,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:12:12,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1232056169] [2021-11-19 05:12:12,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:12:12,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:12:12,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:12:12,640 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:12:12,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-11-19 05:12:12,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 05:12:12,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:12:12,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 05:12:12,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:12:13,003 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 8 treesize of output 7 [2021-11-19 05:12:14,682 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 41 treesize of output 33 [2021-11-19 05:12:14,697 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 91 proven. 15 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-19 05:12:14,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:12:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 41 proven. 65 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-11-19 05:12:25,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:12:25,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1232056169] [2021-11-19 05:12:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1232056169] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:12:25,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:12:25,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2021-11-19 05:12:25,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909937808] [2021-11-19 05:12:25,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:12:25,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 05:12:25,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:12:25,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 05:12:25,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:12:25,231 INFO L87 Difference]: Start difference. First operand 1816 states and 2305 transitions. Second operand has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:12:25,432 INFO L93 Difference]: Finished difference Result 2037 states and 2567 transitions. [2021-11-19 05:12:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-19 05:12:25,433 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 71 [2021-11-19 05:12:25,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:12:25,440 INFO L225 Difference]: With dead ends: 2037 [2021-11-19 05:12:25,440 INFO L226 Difference]: Without dead ends: 2005 [2021-11-19 05:12:25,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:12:25,441 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:12:25,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 262 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 99 Unchecked, 0.2s Time] [2021-11-19 05:12:25,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2005 states. [2021-11-19 05:12:25,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2005 to 1852. [2021-11-19 05:12:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1844 states have (on average 1.2744034707158352) internal successors, (2350), 1845 states have internal predecessors, (2350), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2356 transitions. [2021-11-19 05:12:25,490 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2356 transitions. Word has length 71 [2021-11-19 05:12:25,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:12:25,491 INFO L470 AbstractCegarLoop]: Abstraction has 1852 states and 2356 transitions. [2021-11-19 05:12:25,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 26 states have internal predecessors, (94), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2356 transitions. [2021-11-19 05:12:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 05:12:25,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:12:25,494 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:12:25,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-11-19 05:12:25,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:12:25,709 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting mainErr1REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:12:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:12:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash -235929033, now seen corresponding path program 4 times [2021-11-19 05:12:25,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:12:25,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1666313737] [2021-11-19 05:12:25,710 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:12:25,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:12:25,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:12:25,710 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:12:25,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-11-19 05:12:25,826 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:12:25,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:12:25,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-19 05:12:25,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:12:25,882 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 8 treesize of output 7 [2021-11-19 05:12:28,083 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:12:28,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:12:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:12:39,384 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:12:39,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1666313737] [2021-11-19 05:12:39,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1666313737] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:12:39,385 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:12:39,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2021-11-19 05:12:39,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244826598] [2021-11-19 05:12:39,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:12:39,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-19 05:12:39,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:12:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-19 05:12:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=545, Invalid=1525, Unknown=0, NotChecked=0, Total=2070 [2021-11-19 05:12:39,387 INFO L87 Difference]: Start difference. First operand 1852 states and 2356 transitions. Second operand has 46 states, 45 states have (on average 2.911111111111111) internal successors, (131), 46 states have internal predecessors, (131), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:12:47,542 WARN L227 SmtUtils]: Spent 6.12s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:13:03,244 WARN L227 SmtUtils]: Spent 10.19s on a formula simplification that was a NOOP. DAG size: 171 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:13:05,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:13:07,525 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:13:16,935 WARN L227 SmtUtils]: Spent 8.74s on a formula simplification that was a NOOP. DAG size: 168 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:13:35,858 WARN L227 SmtUtils]: Spent 17.91s on a formula simplification. DAG size of input: 163 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:13:44,342 WARN L227 SmtUtils]: Spent 7.76s on a formula simplification that was a NOOP. DAG size: 167 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:13:46,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:13:48,409 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:13:56,033 WARN L227 SmtUtils]: Spent 7.07s on a formula simplification that was a NOOP. DAG size: 157 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:14:11,473 WARN L227 SmtUtils]: Spent 14.07s on a formula simplification. DAG size of input: 152 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:14:20,378 WARN L227 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 156 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:14:22,394 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:14:24,430 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:14:31,085 WARN L227 SmtUtils]: Spent 5.91s on a formula simplification that was a NOOP. DAG size: 146 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:14:44,081 WARN L227 SmtUtils]: Spent 12.15s on a formula simplification. DAG size of input: 141 DAG size of output: 141 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:14:50,818 WARN L227 SmtUtils]: Spent 5.76s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:14:52,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:14:54,865 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:15:09,669 WARN L227 SmtUtils]: Spent 9.57s on a formula simplification. DAG size of input: 131 DAG size of output: 131 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:15:16,826 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:15:18,829 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:15:31,683 WARN L227 SmtUtils]: Spent 7.63s on a formula simplification. DAG size of input: 120 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:15:37,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:15:39,542 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:15:49,254 WARN L227 SmtUtils]: Spent 5.78s on a formula simplification. DAG size of input: 109 DAG size of output: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-19 05:15:54,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:15:56,432 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:08,873 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:16,794 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:23,297 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:25,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:27,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:32,863 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:34,895 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:16:41,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:16:41,876 INFO L93 Difference]: Finished difference Result 1941 states and 2461 transitions. [2021-11-19 05:16:41,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2021-11-19 05:16:41,877 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.911111111111111) internal successors, (131), 46 states have internal predecessors, (131), 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 70 [2021-11-19 05:16:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:16:41,884 INFO L225 Difference]: With dead ends: 1941 [2021-11-19 05:16:41,884 INFO L226 Difference]: Without dead ends: 1941 [2021-11-19 05:16:41,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3116 ImplicationChecksByTransitivity, 200.3s TimeCoverageRelationStatistics Valid=2757, Invalid=6173, Unknown=0, NotChecked=0, Total=8930 [2021-11-19 05:16:41,885 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 606 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 1582 mSolverCounterSat, 115 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 1831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1582 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 49.9s IncrementalHoareTripleChecker+Time [2021-11-19 05:16:41,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 817 Invalid, 1831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1582 Invalid, 20 Unknown, 114 Unchecked, 49.9s Time] [2021-11-19 05:16:41,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2021-11-19 05:16:41,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1916. [2021-11-19 05:16:41,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1916 states, 1908 states have (on average 1.2735849056603774) internal successors, (2430), 1909 states have internal predecessors, (2430), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2436 transitions. [2021-11-19 05:16:41,933 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2436 transitions. Word has length 70 [2021-11-19 05:16:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:16:41,934 INFO L470 AbstractCegarLoop]: Abstraction has 1916 states and 2436 transitions. [2021-11-19 05:16:41,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.911111111111111) internal successors, (131), 46 states have internal predecessors, (131), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:16:41,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2436 transitions. [2021-11-19 05:16:41,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 05:16:41,937 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:16:41,937 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:16:41,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-11-19 05:16:42,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:16:42,150 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:16:42,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:16:42,150 INFO L85 PathProgramCache]: Analyzing trace with hash -162198522, now seen corresponding path program 8 times [2021-11-19 05:16:42,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:16:42,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [528573071] [2021-11-19 05:16:42,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 05:16:42,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:16:42,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:16:42,151 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:16:42,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-11-19 05:16:42,326 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 05:16:42,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:16:42,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 05:16:42,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:16:42,371 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 8 treesize of output 7 [2021-11-19 05:16:43,941 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-19 05:16:43,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:16:49,727 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-19 05:16:49,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:16:49,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [528573071] [2021-11-19 05:16:49,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [528573071] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:16:49,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:16:49,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 26 [2021-11-19 05:16:49,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838056773] [2021-11-19 05:16:49,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:16:49,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-19 05:16:49,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:16:49,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-19 05:16:49,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2021-11-19 05:16:49,729 INFO L87 Difference]: Start difference. First operand 1916 states and 2436 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:17:52,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:17:52,856 INFO L93 Difference]: Finished difference Result 2450 states and 3048 transitions. [2021-11-19 05:17:52,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-11-19 05:17:52,858 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 72 [2021-11-19 05:17:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:17:52,866 INFO L225 Difference]: With dead ends: 2450 [2021-11-19 05:17:52,866 INFO L226 Difference]: Without dead ends: 2440 [2021-11-19 05:17:52,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 120 SyntacticMatches, 1 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3344 ImplicationChecksByTransitivity, 57.8s TimeCoverageRelationStatistics Valid=1848, Invalid=7854, Unknown=0, NotChecked=0, Total=9702 [2021-11-19 05:17:52,868 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1143 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-19 05:17:52,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 439 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 812 Invalid, 0 Unknown, 132 Unchecked, 8.7s Time] [2021-11-19 05:17:52,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2440 states. [2021-11-19 05:17:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2440 to 2321. [2021-11-19 05:17:52,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 2313 states have (on average 1.25810635538262) internal successors, (2910), 2314 states have internal predecessors, (2910), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:17:52,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 2916 transitions. [2021-11-19 05:17:52,920 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 2916 transitions. Word has length 72 [2021-11-19 05:17:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:17:52,921 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 2916 transitions. [2021-11-19 05:17:52,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 25 states have internal predecessors, (89), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:17:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 2916 transitions. [2021-11-19 05:17:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 05:17:52,924 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:17:52,924 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:17:52,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2021-11-19 05:17:53,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:17:53,142 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:17:53,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:17:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash -875075468, now seen corresponding path program 9 times [2021-11-19 05:17:53,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:17:53,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125685910] [2021-11-19 05:17:53,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 05:17:53,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:17:53,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:17:53,145 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:17:53,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-11-19 05:17:53,443 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 05:17:53,443 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:17:53,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 05:17:53,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:17:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 74 proven. 35 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 05:17:53,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:17:55,222 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 87 proven. 22 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-19 05:17:55,222 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:17:55,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125685910] [2021-11-19 05:17:55,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125685910] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:17:55,223 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:17:55,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25 [2021-11-19 05:17:55,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257099843] [2021-11-19 05:17:55,223 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:17:55,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-11-19 05:17:55,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:17:55,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-11-19 05:17:55,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=510, Unknown=0, NotChecked=0, Total=600 [2021-11-19 05:17:55,225 INFO L87 Difference]: Start difference. First operand 2321 states and 2916 transitions. Second operand has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:17:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:17:58,718 INFO L93 Difference]: Finished difference Result 2323 states and 2913 transitions. [2021-11-19 05:17:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-19 05:17:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-11-19 05:17:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:17:58,731 INFO L225 Difference]: With dead ends: 2323 [2021-11-19 05:17:58,731 INFO L226 Difference]: Without dead ends: 2323 [2021-11-19 05:17:58,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=195, Invalid=1065, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 05:17:58,732 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 307 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-11-19 05:17:58,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [307 Valid, 411 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-11-19 05:17:58,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2323 states. [2021-11-19 05:17:58,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2323 to 2321. [2021-11-19 05:17:58,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2321 states, 2313 states have (on average 1.2568093385214008) internal successors, (2907), 2314 states have internal predecessors, (2907), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:17:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 2913 transitions. [2021-11-19 05:17:58,769 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 2913 transitions. Word has length 74 [2021-11-19 05:17:58,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:17:58,769 INFO L470 AbstractCegarLoop]: Abstraction has 2321 states and 2913 transitions. [2021-11-19 05:17:58,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.0) internal successors, (75), 23 states have internal predecessors, (75), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:17:58,769 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 2913 transitions. [2021-11-19 05:17:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 05:17:58,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:17:58,772 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:17:58,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2021-11-19 05:17:58,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:17:58,986 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:17:58,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:17:58,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1498197727, now seen corresponding path program 10 times [2021-11-19 05:17:58,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:17:58,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [577690321] [2021-11-19 05:17:58,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:17:58,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:17:58,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:17:58,988 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:17:58,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-11-19 05:17:59,146 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:17:59,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:17:59,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-19 05:17:59,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:17:59,182 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 8 treesize of output 7 [2021-11-19 05:18:00,426 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 101 proven. 34 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-19 05:18:00,426 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:18:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 148 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:18:05,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:18:05,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [577690321] [2021-11-19 05:18:05,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [577690321] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:18:05,573 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:18:05,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 28 [2021-11-19 05:18:05,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154874311] [2021-11-19 05:18:05,573 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:18:05,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-19 05:18:05,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:18:05,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-19 05:18:05,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=660, Unknown=0, NotChecked=0, Total=756 [2021-11-19 05:18:05,574 INFO L87 Difference]: Start difference. First operand 2321 states and 2913 transitions. Second operand has 28 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:18:10,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:18:10,837 INFO L93 Difference]: Finished difference Result 2901 states and 3614 transitions. [2021-11-19 05:18:10,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 05:18:10,840 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-11-19 05:18:10,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:18:10,852 INFO L225 Difference]: With dead ends: 2901 [2021-11-19 05:18:10,852 INFO L226 Difference]: Without dead ends: 2878 [2021-11-19 05:18:10,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=162, Invalid=1170, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 05:18:10,853 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 80 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-19 05:18:10,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 508 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 344 Invalid, 0 Unknown, 123 Unchecked, 2.4s Time] [2021-11-19 05:18:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2878 states. [2021-11-19 05:18:10,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2878 to 2714. [2021-11-19 05:18:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2714 states, 2706 states have (on average 1.2575757575757576) internal successors, (3403), 2707 states have internal predecessors, (3403), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:18:10,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2714 states to 2714 states and 3409 transitions. [2021-11-19 05:18:10,896 INFO L78 Accepts]: Start accepts. Automaton has 2714 states and 3409 transitions. Word has length 77 [2021-11-19 05:18:10,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:18:10,896 INFO L470 AbstractCegarLoop]: Abstraction has 2714 states and 3409 transitions. [2021-11-19 05:18:10,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 4.8076923076923075) internal successors, (125), 26 states have internal predecessors, (125), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:18:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 2714 states and 3409 transitions. [2021-11-19 05:18:10,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 05:18:10,899 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:18:10,899 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:18:10,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-11-19 05:18:11,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:18:11,120 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:18:11,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:18:11,120 INFO L85 PathProgramCache]: Analyzing trace with hash 444760913, now seen corresponding path program 11 times [2021-11-19 05:18:11,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:18:11,121 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689936696] [2021-11-19 05:18:11,121 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-19 05:18:11,121 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:18:11,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:18:11,122 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:18:11,125 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-11-19 05:18:11,773 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-11-19 05:18:11,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:18:11,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-19 05:18:11,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:18:12,524 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 74 proven. 23 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-19 05:18:12,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:18:13,957 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 83 proven. 14 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2021-11-19 05:18:13,957 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:18:13,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689936696] [2021-11-19 05:18:13,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689936696] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:18:13,957 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:18:13,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11] total 23 [2021-11-19 05:18:13,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724248021] [2021-11-19 05:18:13,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:18:13,958 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-19 05:18:13,958 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:18:13,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-19 05:18:13,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=397, Unknown=0, NotChecked=0, Total=506 [2021-11-19 05:18:13,959 INFO L87 Difference]: Start difference. First operand 2714 states and 3409 transitions. Second operand has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:18:17,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:18:17,785 INFO L93 Difference]: Finished difference Result 2883 states and 3564 transitions. [2021-11-19 05:18:17,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-19 05:18:17,787 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 77 [2021-11-19 05:18:17,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:18:17,793 INFO L225 Difference]: With dead ends: 2883 [2021-11-19 05:18:17,793 INFO L226 Difference]: Without dead ends: 2634 [2021-11-19 05:18:17,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=390, Invalid=1590, Unknown=0, NotChecked=0, Total=1980 [2021-11-19 05:18:17,794 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 397 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 397 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-11-19 05:18:17,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [397 Valid, 261 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-11-19 05:18:17,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2021-11-19 05:18:17,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2585. [2021-11-19 05:18:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2585 states, 2577 states have (on average 1.2506790842064417) internal successors, (3223), 2578 states have internal predecessors, (3223), 5 states have call successors, (5), 5 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:18:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3229 transitions. [2021-11-19 05:18:17,832 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3229 transitions. Word has length 77 [2021-11-19 05:18:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:18:17,832 INFO L470 AbstractCegarLoop]: Abstraction has 2585 states and 3229 transitions. [2021-11-19 05:18:17,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.130434782608696) internal successors, (72), 22 states have internal predecessors, (72), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:18:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3229 transitions. [2021-11-19 05:18:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-19 05:18:17,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:18:17,835 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:18:17,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-11-19 05:18:18,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:18:18,050 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:18:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:18:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1726649272, now seen corresponding path program 10 times [2021-11-19 05:18:18,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:18:18,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524454444] [2021-11-19 05:18:18,052 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-19 05:18:18,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:18:18,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:18:18,053 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:18:18,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-11-19 05:18:18,274 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-19 05:18:18,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:18:18,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 28 conjunts are in the unsatisfiable core [2021-11-19 05:18:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:18:18,325 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 8 treesize of output 7 [2021-11-19 05:18:20,166 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 105 proven. 136 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-19 05:18:20,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:18:28,296 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 8 proven. 238 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:18:28,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:18:28,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524454444] [2021-11-19 05:18:28,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524454444] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:18:28,297 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:18:28,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 41 [2021-11-19 05:18:28,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001667583] [2021-11-19 05:18:28,297 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:18:28,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-11-19 05:18:28,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:18:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-11-19 05:18:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=1412, Unknown=0, NotChecked=0, Total=1640 [2021-11-19 05:18:28,298 INFO L87 Difference]: Start difference. First operand 2585 states and 3229 transitions. Second operand has 41 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:18:51,481 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 05:19:03,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:19:03,686 INFO L93 Difference]: Finished difference Result 4130 states and 5078 transitions. [2021-11-19 05:19:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2021-11-19 05:19:03,688 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 79 [2021-11-19 05:19:03,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:19:03,695 INFO L225 Difference]: With dead ends: 4130 [2021-11-19 05:19:03,695 INFO L226 Difference]: Without dead ends: 4106 [2021-11-19 05:19:03,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 128 SyntacticMatches, 5 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2147 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=955, Invalid=6185, Unknown=0, NotChecked=0, Total=7140 [2021-11-19 05:19:03,696 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 530 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 933 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1107 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:19:03,696 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 822 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 933 Invalid, 0 Unknown, 1107 Unchecked, 11.1s Time] [2021-11-19 05:19:03,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4106 states. [2021-11-19 05:19:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4106 to 3702. [2021-11-19 05:19:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 3693 states have (on average 1.2374763065258598) internal successors, (4570), 3694 states have internal predecessors, (4570), 6 states have call successors, (6), 6 states have call predecessors, (6), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:19:03,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 4577 transitions. [2021-11-19 05:19:03,749 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 4577 transitions. Word has length 79 [2021-11-19 05:19:03,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:19:03,749 INFO L470 AbstractCegarLoop]: Abstraction has 3702 states and 4577 transitions. [2021-11-19 05:19:03,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 39 states have (on average 3.6666666666666665) internal successors, (143), 39 states have internal predecessors, (143), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 05:19:03,750 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 4577 transitions. [2021-11-19 05:19:03,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-19 05:19:03,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:19:03,752 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 7, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:19:03,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-11-19 05:19:03,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 [2021-11-19 05:19:03,972 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting sortErr3REQUIRES_VIOLATION === [mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr2ENSURES_VIOLATIONMEMORY_LEAK, sortErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-19 05:19:03,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:19:03,972 INFO L85 PathProgramCache]: Analyzing trace with hash -287754513, now seen corresponding path program 12 times [2021-11-19 05:19:03,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-19 05:19:03,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196759978] [2021-11-19 05:19:03,973 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-19 05:19:03,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 05:19:03,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat [2021-11-19 05:19:03,974 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 05:19:04,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_56537277-559a-4c47-b529-ee7d782450f1/bin/uautomizer-ZXIjhQolGL/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-11-19 05:19:04,399 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-11-19 05:19:04,399 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 05:19:04,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-19 05:19:04,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 05:19:04,456 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 8 treesize of output 7 [2021-11-19 05:19:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 05:19:06,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 05:19:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-19 05:19:15,720 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-19 05:19:15,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196759978] [2021-11-19 05:19:15,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196759978] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 05:19:15,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 05:19:15,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16] total 29 [2021-11-19 05:19:15,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025836385] [2021-11-19 05:19:15,721 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 05:19:15,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-19 05:19:15,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-19 05:19:15,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-19 05:19:15,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=711, Unknown=0, NotChecked=0, Total=870 [2021-11-19 05:19:15,722 INFO L87 Difference]: Start difference. First operand 3702 states and 4577 transitions. Second operand has 30 states, 29 states have (on average 3.689655172413793) internal successors, (107), 28 states have internal predecessors, (107), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)