./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0 --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 d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:20:34,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:20:34,353 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:20:34,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:20:34,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:20:34,388 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:20:34,390 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:20:34,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:20:34,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:20:34,396 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:20:34,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:20:34,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:20:34,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:20:34,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:20:34,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:20:34,405 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:20:34,406 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:20:34,408 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:20:34,410 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:20:34,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:20:34,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:20:34,416 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:20:34,418 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:20:34,419 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:20:34,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:20:34,423 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:20:34,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:20:34,425 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:20:34,425 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:20:34,427 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:20:34,427 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:20:34,428 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:20:34,429 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:20:34,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:20:34,438 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:20:34,438 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:20:34,439 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:20:34,440 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:20:34,440 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:20:34,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:20:34,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:20:34,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-22 15:20:34,472 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:20:34,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:20:34,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:20:34,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:20:34,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:20:34,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:20:34,475 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:20:34,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:20:34,476 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:20:34,476 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:20:34,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:20:34,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:20:34,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:20:34,477 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:20:34,477 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:20:34,477 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:20:34,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:20:34,477 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:20:34,478 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:20:34,478 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:20:34,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:20:34,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:20:34,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:20:34,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:20:34,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:20:34,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:20:34,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 15:20:34,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 15:20:34,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:20:34,480 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_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-11-22 15:20:34,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:20:34,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:20:34,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:20:34,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:20:34,853 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:20:34,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-22 15:20:34,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/72f336b29/3290baeaa3b94ed79485c4b97ca66f4e/FLAG66c082078 [2021-11-22 15:20:35,573 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:20:35,574 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-22 15:20:35,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/72f336b29/3290baeaa3b94ed79485c4b97ca66f4e/FLAG66c082078 [2021-11-22 15:20:35,798 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/72f336b29/3290baeaa3b94ed79485c4b97ca66f4e [2021-11-22 15:20:35,801 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:20:35,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:20:35,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:20:35,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:20:35,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:20:35,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:20:35" (1/1) ... [2021-11-22 15:20:35,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1261340c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:35, skipping insertion in model container [2021-11-22 15:20:35,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:20:35" (1/1) ... [2021-11-22 15:20:35,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:20:35,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:20:36,345 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:20:36,376 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) [2021-11-22 15:20:36,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2c962974 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:36, skipping insertion in model container [2021-11-22 15:20:36,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:20:36,377 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-22 15:20:36,380 INFO L158 Benchmark]: Toolchain (without parser) took 572.79ms. Allocated memory is still 92.3MB. Free memory was 50.4MB in the beginning and 68.2MB in the end (delta: -17.8MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-22 15:20:36,382 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 92.3MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-22 15:20:36,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.03ms. Allocated memory is still 92.3MB. Free memory was 50.3MB in the beginning and 68.2MB in the end (delta: -17.9MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2021-11-22 15:20:36,386 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 92.3MB. Free memory is still 69.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.03ms. Allocated memory is still 92.3MB. Free memory was 50.3MB in the beginning and 68.2MB in the end (delta: -17.9MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0 --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 d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 15:20:38,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 15:20:38,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 15:20:38,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 15:20:38,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 15:20:38,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 15:20:38,840 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 15:20:38,847 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 15:20:38,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 15:20:38,859 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 15:20:38,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 15:20:38,863 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 15:20:38,863 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 15:20:38,866 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 15:20:38,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 15:20:38,873 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 15:20:38,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 15:20:38,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 15:20:38,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 15:20:38,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 15:20:38,889 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 15:20:38,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 15:20:38,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 15:20:38,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 15:20:38,905 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 15:20:38,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 15:20:38,906 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 15:20:38,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 15:20:38,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 15:20:38,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 15:20:38,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 15:20:38,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 15:20:38,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 15:20:38,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 15:20:38,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 15:20:38,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 15:20:38,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 15:20:38,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 15:20:38,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 15:20:38,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 15:20:38,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 15:20:38,921 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-22 15:20:38,975 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 15:20:38,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 15:20:38,976 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 15:20:38,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 15:20:38,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 15:20:38,980 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 15:20:38,980 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 15:20:38,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 15:20:38,980 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-22 15:20:38,981 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-22 15:20:38,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 15:20:38,982 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-22 15:20:38,982 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 15:20:38,983 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-22 15:20:38,983 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-22 15:20:38,984 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-22 15:20:38,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 15:20:38,984 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-22 15:20:38,984 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-22 15:20:38,985 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-22 15:20:38,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-22 15:20:38,985 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 15:20:38,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 15:20:38,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 15:20:38,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 15:20:38,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:20:38,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 15:20:38,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 15:20:38,987 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-22 15:20:38,987 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-22 15:20:38,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 15:20:38,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-22 15:20:38,988 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_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d2e5061cdab54d9faeb4b87debefa6d4cd511c313e4ad95bcaf137fbc78127a3 [2021-11-22 15:20:39,390 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 15:20:39,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 15:20:39,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 15:20:39,418 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 15:20:39,419 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 15:20:39,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-22 15:20:39,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/f1541b914/eaaeacd354f047b28491f529a2d643f9/FLAG831812e89 [2021-11-22 15:20:40,209 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 15:20:40,210 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/sv-benchmarks/c/ldv-memsafety/memleaks_test15-2.i [2021-11-22 15:20:40,226 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/f1541b914/eaaeacd354f047b28491f529a2d643f9/FLAG831812e89 [2021-11-22 15:20:40,419 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/data/f1541b914/eaaeacd354f047b28491f529a2d643f9 [2021-11-22 15:20:40,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 15:20:40,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 15:20:40,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 15:20:40,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 15:20:40,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 15:20:40,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:20:40" (1/1) ... [2021-11-22 15:20:40,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c79ceb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:40, skipping insertion in model container [2021-11-22 15:20:40,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 03:20:40" (1/1) ... [2021-11-22 15:20:40,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 15:20:40,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:20:41,090 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:20:41,120 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-22 15:20:41,135 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 15:20:41,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:20:41,270 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 15:20:41,373 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 15:20:41,435 INFO L208 MainTranslator]: Completed translation [2021-11-22 15:20:41,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41 WrapperNode [2021-11-22 15:20:41,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 15:20:41,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 15:20:41,437 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 15:20:41,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 15:20:41,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,479 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,512 INFO L137 Inliner]: procedures = 176, calls = 104, calls flagged for inlining = 43, calls inlined = 20, statements flattened = 207 [2021-11-22 15:20:41,513 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 15:20:41,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 15:20:41,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 15:20:41,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 15:20:41,523 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,529 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,529 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 15:20:41,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 15:20:41,554 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 15:20:41,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 15:20:41,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (1/1) ... [2021-11-22 15:20:41,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 15:20:41,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:20:41,588 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 15:20:41,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 15:20:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-22 15:20:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 15:20:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 15:20:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 15:20:41,649 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 15:20:41,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-11-22 15:20:41,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-22 15:20:41,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 15:20:41,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 15:20:41,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 15:20:41,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 15:20:41,820 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 15:20:41,822 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 15:20:42,518 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 15:20:42,527 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 15:20:42,531 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-22 15:20:42,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:20:42 BoogieIcfgContainer [2021-11-22 15:20:42,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 15:20:42,536 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 15:20:42,536 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 15:20:42,539 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 15:20:42,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 03:20:40" (1/3) ... [2021-11-22 15:20:42,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab88474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:20:42, skipping insertion in model container [2021-11-22 15:20:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 03:20:41" (2/3) ... [2021-11-22 15:20:42,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ab88474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 03:20:42, skipping insertion in model container [2021-11-22 15:20:42,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 03:20:42" (3/3) ... [2021-11-22 15:20:42,549 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test15-2.i [2021-11-22 15:20:42,555 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 15:20:42,556 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2021-11-22 15:20:42,605 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 15:20:42,612 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 [2021-11-22 15:20:42,612 INFO L340 AbstractCegarLoop]: Starting to check reachability of 52 error locations. [2021-11-22 15:20:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 78 states have (on average 1.8333333333333333) internal successors, (143), 130 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:42,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:20:42,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:42,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:42,650 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:42,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:42,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1804972391, now seen corresponding path program 1 times [2021-11-22 15:20:42,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:42,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1784186707] [2021-11-22 15:20:42,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:42,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:42,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:42,673 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:42,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-22 15:20:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:42,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:20:42,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:42,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:42,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:42,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:42,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:42,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1784186707] [2021-11-22 15:20:42,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1784186707] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:42,861 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:42,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:20:42,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438402523] [2021-11-22 15:20:42,865 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:42,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:20:42,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:42,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:20:42,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:20:42,912 INFO L87 Difference]: Start difference. First operand has 131 states, 78 states have (on average 1.8333333333333333) internal successors, (143), 130 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:43,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:43,116 INFO L93 Difference]: Finished difference Result 505 states and 545 transitions. [2021-11-22 15:20:43,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:20:43,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:20:43,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:43,145 INFO L225 Difference]: With dead ends: 505 [2021-11-22 15:20:43,145 INFO L226 Difference]: Without dead ends: 497 [2021-11-22 15:20:43,146 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:20:43,150 INFO L933 BasicCegarLoop]: 134 mSDtfsCounter, 531 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 531 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:43,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [531 Valid, 392 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:20:43,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2021-11-22 15:20:43,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 131. [2021-11-22 15:20:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 79 states have (on average 1.8101265822784811) internal successors, (143), 130 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:43,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions. [2021-11-22 15:20:43,208 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 7 [2021-11-22 15:20:43,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:43,209 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 143 transitions. [2021-11-22 15:20:43,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:43,209 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions. [2021-11-22 15:20:43,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-22 15:20:43,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:43,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:43,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:43,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:43,422 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:43,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:43,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1806819433, now seen corresponding path program 1 times [2021-11-22 15:20:43,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:43,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781818744] [2021-11-22 15:20:43,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:43,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:43,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:43,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:43,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-22 15:20:43,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:43,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:20:43,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:43,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:43,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:43,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:43,522 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:43,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781818744] [2021-11-22 15:20:43,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781818744] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:43,523 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:43,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 15:20:43,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692933191] [2021-11-22 15:20:43,524 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:43,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:43,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:43,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:43,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:43,526 INFO L87 Difference]: Start difference. First operand 131 states and 143 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:43,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:43,803 INFO L93 Difference]: Finished difference Result 224 states and 243 transitions. [2021-11-22 15:20:43,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:43,804 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-22 15:20:43,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:43,806 INFO L225 Difference]: With dead ends: 224 [2021-11-22 15:20:43,807 INFO L226 Difference]: Without dead ends: 222 [2021-11-22 15:20:43,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:43,809 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 93 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:43,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 288 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:20:43,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-22 15:20:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 129. [2021-11-22 15:20:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 77 states have (on average 1.8181818181818181) internal successors, (140), 128 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:43,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-11-22 15:20:43,833 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 7 [2021-11-22 15:20:43,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:43,833 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-11-22 15:20:43,833 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:43,834 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-11-22 15:20:43,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:20:43,834 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:43,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:43,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:44,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:44,048 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:44,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:44,049 INFO L85 PathProgramCache]: Analyzing trace with hash -592189802, now seen corresponding path program 1 times [2021-11-22 15:20:44,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:44,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985365548] [2021-11-22 15:20:44,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:44,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:44,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:44,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:44,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-22 15:20:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:44,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:20:44,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:44,162 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:44,188 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:44,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985365548] [2021-11-22 15:20:44,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985365548] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:44,189 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:44,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:20:44,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398708084] [2021-11-22 15:20:44,189 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:44,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:20:44,190 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:44,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:20:44,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:20:44,191 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:44,401 INFO L93 Difference]: Finished difference Result 492 states and 527 transitions. [2021-11-22 15:20:44,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:20:44,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:20:44,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:44,405 INFO L225 Difference]: With dead ends: 492 [2021-11-22 15:20:44,406 INFO L226 Difference]: Without dead ends: 492 [2021-11-22 15:20:44,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:20:44,416 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 512 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:44,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [512 Valid, 371 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:20:44,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2021-11-22 15:20:44,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 131. [2021-11-22 15:20:44,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 79 states have (on average 1.7974683544303798) internal successors, (142), 130 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:44,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions. [2021-11-22 15:20:44,440 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 9 [2021-11-22 15:20:44,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:44,441 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 142 transitions. [2021-11-22 15:20:44,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:44,442 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 142 transitions. [2021-11-22 15:20:44,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-22 15:20:44,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:44,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:44,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:44,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:44,655 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:44,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash -592130220, now seen corresponding path program 1 times [2021-11-22 15:20:44,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:44,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994256467] [2021-11-22 15:20:44,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:44,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:44,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:44,658 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:44,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-22 15:20:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:44,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:20:44,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:44,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:44,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:44,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:44,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994256467] [2021-11-22 15:20:44,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994256467] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:44,796 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:44,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:20:44,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47442667] [2021-11-22 15:20:44,797 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:44,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:20:44,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:44,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:20:44,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:20:44,799 INFO L87 Difference]: Start difference. First operand 131 states and 142 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:44,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:44,840 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-11-22 15:20:44,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:20:44,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-22 15:20:44,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:44,842 INFO L225 Difference]: With dead ends: 130 [2021-11-22 15:20:44,843 INFO L226 Difference]: Without dead ends: 130 [2021-11-22 15:20:44,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:20:44,844 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 259 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:44,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 134 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:20:44,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-22 15:20:44,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2021-11-22 15:20:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 79 states have (on average 1.7848101265822784) internal successors, (141), 129 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 141 transitions. [2021-11-22 15:20:44,852 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 141 transitions. Word has length 9 [2021-11-22 15:20:44,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:44,852 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 141 transitions. [2021-11-22 15:20:44,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:44,853 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 141 transitions. [2021-11-22 15:20:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-22 15:20:44,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:44,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:44,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:45,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:45,054 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:45,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1176167408, now seen corresponding path program 1 times [2021-11-22 15:20:45,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:45,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1074672362] [2021-11-22 15:20:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:45,056 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:45,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:45,060 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:45,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-22 15:20:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:45,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:20:45,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:45,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:45,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:45,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:45,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1074672362] [2021-11-22 15:20:45,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1074672362] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:45,319 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:45,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2021-11-22 15:20:45,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292354961] [2021-11-22 15:20:45,319 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:45,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:20:45,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:45,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:20:45,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:20:45,320 INFO L87 Difference]: Start difference. First operand 130 states and 141 transitions. Second operand has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:45,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:45,714 INFO L93 Difference]: Finished difference Result 489 states and 526 transitions. [2021-11-22 15:20:45,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:20:45,715 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-22 15:20:45,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:45,718 INFO L225 Difference]: With dead ends: 489 [2021-11-22 15:20:45,718 INFO L226 Difference]: Without dead ends: 489 [2021-11-22 15:20:45,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:20:45,719 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 1140 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:45,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1140 Valid, 341 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:20:45,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2021-11-22 15:20:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 129. [2021-11-22 15:20:45,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 79 states have (on average 1.7721518987341771) internal successors, (140), 128 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:45,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 140 transitions. [2021-11-22 15:20:45,744 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 140 transitions. Word has length 10 [2021-11-22 15:20:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:45,745 INFO L470 AbstractCegarLoop]: Abstraction has 129 states and 140 transitions. [2021-11-22 15:20:45,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 140 transitions. [2021-11-22 15:20:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:20:45,746 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:45,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:45,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:45,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:45,957 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:45,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash 2136151760, now seen corresponding path program 1 times [2021-11-22 15:20:45,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:45,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [181328996] [2021-11-22 15:20:45,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:45,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:45,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:45,960 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:45,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-22 15:20:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:46,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:20:46,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:46,078 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 [2021-11-22 15:20:46,150 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:20:46,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-22 15:20:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:46,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:50,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:50,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:50,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [181328996] [2021-11-22 15:20:50,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [181328996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:50,419 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:50,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-22 15:20:50,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72495837] [2021-11-22 15:20:50,420 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:50,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 15:20:50,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:50,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 15:20:50,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=25, Unknown=2, NotChecked=0, Total=42 [2021-11-22 15:20:50,421 INFO L87 Difference]: Start difference. First operand 129 states and 140 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:50,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:50,634 INFO L93 Difference]: Finished difference Result 137 states and 151 transitions. [2021-11-22 15:20:50,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:20:50,635 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:20:50,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:50,636 INFO L225 Difference]: With dead ends: 137 [2021-11-22 15:20:50,636 INFO L226 Difference]: Without dead ends: 137 [2021-11-22 15:20:50,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=29, Invalid=41, Unknown=2, NotChecked=0, Total=72 [2021-11-22 15:20:50,637 INFO L933 BasicCegarLoop]: 131 mSDtfsCounter, 4 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 184 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:50,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 433 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 184 Unchecked, 0.2s Time] [2021-11-22 15:20:50,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-11-22 15:20:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 132. [2021-11-22 15:20:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 82 states have (on average 1.7682926829268293) internal successors, (145), 131 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 145 transitions. [2021-11-22 15:20:50,642 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 145 transitions. Word has length 11 [2021-11-22 15:20:50,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:50,643 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 145 transitions. [2021-11-22 15:20:50,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 145 transitions. [2021-11-22 15:20:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:20:50,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:50,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:50,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:50,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:50,845 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash 2136151761, now seen corresponding path program 1 times [2021-11-22 15:20:50,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [833275871] [2021-11-22 15:20:50,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:50,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:50,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:50,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:50,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-22 15:20:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:50,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:20:50,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:50,969 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 [2021-11-22 15:20:50,977 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 [2021-11-22 15:20:51,099 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:20:51,099 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-11-22 15:20:51,111 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:20:51,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-11-22 15:20:51,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:51,141 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:53,623 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 26 treesize of output 24 [2021-11-22 15:20:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:53,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:53,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [833275871] [2021-11-22 15:20:53,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [833275871] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:53,666 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:53,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 15:20:53,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913514594] [2021-11-22 15:20:53,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:53,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:20:53,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:53,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:20:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=66, Unknown=1, NotChecked=0, Total=90 [2021-11-22 15:20:53,668 INFO L87 Difference]: Start difference. First operand 132 states and 145 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:55,158 INFO L93 Difference]: Finished difference Result 380 states and 409 transitions. [2021-11-22 15:20:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:20:55,159 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:20:55,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:55,162 INFO L225 Difference]: With dead ends: 380 [2021-11-22 15:20:55,162 INFO L226 Difference]: Without dead ends: 380 [2021-11-22 15:20:55,162 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=62, Invalid=147, Unknown=1, NotChecked=0, Total=210 [2021-11-22 15:20:55,163 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 674 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 674 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:55,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [674 Valid, 639 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 279 Invalid, 0 Unknown, 345 Unchecked, 1.3s Time] [2021-11-22 15:20:55,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2021-11-22 15:20:55,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 262. [2021-11-22 15:20:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 214 states have (on average 1.7523364485981308) internal successors, (375), 261 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 375 transitions. [2021-11-22 15:20:55,174 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 375 transitions. Word has length 11 [2021-11-22 15:20:55,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:55,174 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 375 transitions. [2021-11-22 15:20:55,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:55,175 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 375 transitions. [2021-11-22 15:20:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:20:55,176 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:55,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:55,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:55,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:55,387 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:55,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:55,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2101451050, now seen corresponding path program 1 times [2021-11-22 15:20:55,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:55,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [619421989] [2021-11-22 15:20:55,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:55,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:55,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:55,389 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:55,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-22 15:20:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:55,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:20:55,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:55,473 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 [2021-11-22 15:20:55,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:55,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:55,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:55,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:55,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [619421989] [2021-11-22 15:20:55,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [619421989] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:55,564 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:55,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:20:55,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646323639] [2021-11-22 15:20:55,565 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:55,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:20:55,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:55,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:20:55,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:20:55,566 INFO L87 Difference]: Start difference. First operand 262 states and 375 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:56,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:56,090 INFO L93 Difference]: Finished difference Result 575 states and 782 transitions. [2021-11-22 15:20:56,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:20:56,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:20:56,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:56,095 INFO L225 Difference]: With dead ends: 575 [2021-11-22 15:20:56,095 INFO L226 Difference]: Without dead ends: 575 [2021-11-22 15:20:56,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:20:56,096 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 362 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:56,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 195 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:20:56,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-11-22 15:20:56,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 301. [2021-11-22 15:20:56,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 253 states have (on average 1.7233201581027668) internal successors, (436), 300 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:56,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 436 transitions. [2021-11-22 15:20:56,110 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 436 transitions. Word has length 11 [2021-11-22 15:20:56,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:56,110 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 436 transitions. [2021-11-22 15:20:56,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:56,111 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 436 transitions. [2021-11-22 15:20:56,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:20:56,112 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:56,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:56,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:56,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:56,328 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:56,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:56,328 INFO L85 PathProgramCache]: Analyzing trace with hash -2101557234, now seen corresponding path program 1 times [2021-11-22 15:20:56,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:56,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194535990] [2021-11-22 15:20:56,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:56,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:56,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:56,329 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:56,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-22 15:20:56,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:56,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:20:56,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:56,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:56,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:56,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:56,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:56,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194535990] [2021-11-22 15:20:56,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194535990] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:56,482 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:56,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:20:56,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964799296] [2021-11-22 15:20:56,483 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:56,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:20:56,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:56,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:20:56,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:20:56,484 INFO L87 Difference]: Start difference. First operand 301 states and 436 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:56,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:56,605 INFO L93 Difference]: Finished difference Result 310 states and 366 transitions. [2021-11-22 15:20:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:20:56,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:20:56,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:56,607 INFO L225 Difference]: With dead ends: 310 [2021-11-22 15:20:56,607 INFO L226 Difference]: Without dead ends: 310 [2021-11-22 15:20:56,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:20:56,609 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 133 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 584 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 [2021-11-22 15:20:56,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 584 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:20:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-11-22 15:20:56,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 230. [2021-11-22 15:20:56,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 185 states have (on average 1.664864864864865) internal successors, (308), 229 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:56,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 308 transitions. [2021-11-22 15:20:56,617 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 308 transitions. Word has length 11 [2021-11-22 15:20:56,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:56,618 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 308 transitions. [2021-11-22 15:20:56,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:56,618 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 308 transitions. [2021-11-22 15:20:56,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 15:20:56,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:56,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:56,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:56,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:56,830 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:56,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:56,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1421392680, now seen corresponding path program 1 times [2021-11-22 15:20:56,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:56,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939009664] [2021-11-22 15:20:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:56,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:56,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:56,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:56,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-22 15:20:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:56,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:20:56,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:56,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:56,963 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:56,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939009664] [2021-11-22 15:20:56,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939009664] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:56,964 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:56,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:20:56,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958800779] [2021-11-22 15:20:56,964 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:56,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:20:56,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:56,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:20:56,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:20:56,966 INFO L87 Difference]: Start difference. First operand 230 states and 308 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:57,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:57,062 INFO L93 Difference]: Finished difference Result 277 states and 321 transitions. [2021-11-22 15:20:57,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:20:57,063 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-22 15:20:57,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:57,064 INFO L225 Difference]: With dead ends: 277 [2021-11-22 15:20:57,065 INFO L226 Difference]: Without dead ends: 275 [2021-11-22 15:20:57,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:20:57,065 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 119 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:57,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 587 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 15:20:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2021-11-22 15:20:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 203. [2021-11-22 15:20:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 159 states have (on average 1.679245283018868) internal successors, (267), 202 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:57,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 267 transitions. [2021-11-22 15:20:57,073 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 267 transitions. Word has length 11 [2021-11-22 15:20:57,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:57,073 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 267 transitions. [2021-11-22 15:20:57,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:57,074 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 267 transitions. [2021-11-22 15:20:57,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:20:57,074 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:57,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:57,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:57,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:57,286 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:57,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:57,287 INFO L85 PathProgramCache]: Analyzing trace with hash -152525903, now seen corresponding path program 1 times [2021-11-22 15:20:57,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:57,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1549409144] [2021-11-22 15:20:57,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:57,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:57,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:57,292 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:57,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-22 15:20:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:57,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 15:20:57,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:57,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:57,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:20:57,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:57,409 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:20:57,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1549409144] [2021-11-22 15:20:57,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1549409144] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:20:57,409 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:20:57,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-22 15:20:57,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993323687] [2021-11-22 15:20:57,410 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:20:57,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 15:20:57,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:20:57,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 15:20:57,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:57,412 INFO L87 Difference]: Start difference. First operand 203 states and 267 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:57,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:20:57,603 INFO L93 Difference]: Finished difference Result 256 states and 337 transitions. [2021-11-22 15:20:57,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 15:20:57,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:20:57,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:20:57,605 INFO L225 Difference]: With dead ends: 256 [2021-11-22 15:20:57,605 INFO L226 Difference]: Without dead ends: 256 [2021-11-22 15:20:57,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 15:20:57,607 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 100 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:20:57,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 122 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:20:57,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-11-22 15:20:57,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 211. [2021-11-22 15:20:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 169 states have (on average 1.668639053254438) internal successors, (282), 210 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2021-11-22 15:20:57,625 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 13 [2021-11-22 15:20:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:20:57,626 INFO L470 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2021-11-22 15:20:57,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:20:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2021-11-22 15:20:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-22 15:20:57,627 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:20:57,627 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:20:57,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-22 15:20:57,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:20:57,828 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:20:57,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:20:57,828 INFO L85 PathProgramCache]: Analyzing trace with hash -859822471, now seen corresponding path program 1 times [2021-11-22 15:20:57,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:20:57,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [602847777] [2021-11-22 15:20:57,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:20:57,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:20:57,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:20:57,829 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:20:57,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-22 15:20:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:20:57,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:20:57,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:20:58,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:20:58,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:03,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:03,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [602847777] [2021-11-22 15:21:03,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [602847777] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:03,300 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:03,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-22 15:21:03,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252256402] [2021-11-22 15:21:03,301 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:03,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:21:03,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:03,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:21:03,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=50, Unknown=2, NotChecked=0, Total=72 [2021-11-22 15:21:03,302 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:03,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:03,996 INFO L93 Difference]: Finished difference Result 213 states and 283 transitions. [2021-11-22 15:21:03,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:21:03,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-22 15:21:03,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:03,998 INFO L225 Difference]: With dead ends: 213 [2021-11-22 15:21:03,998 INFO L226 Difference]: Without dead ends: 206 [2021-11-22 15:21:03,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=32, Invalid=76, Unknown=2, NotChecked=0, Total=110 [2021-11-22 15:21:03,999 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 3 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:03,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 569 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 275 Invalid, 0 Unknown, 53 Unchecked, 0.6s Time] [2021-11-22 15:21:04,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-11-22 15:21:04,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2021-11-22 15:21:04,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 164 states have (on average 1.6829268292682926) internal successors, (276), 205 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:04,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 276 transitions. [2021-11-22 15:21:04,006 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 276 transitions. Word has length 13 [2021-11-22 15:21:04,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:04,006 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 276 transitions. [2021-11-22 15:21:04,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 9 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:04,007 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 276 transitions. [2021-11-22 15:21:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:21:04,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:04,008 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:04,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:04,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:04,208 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:04,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:04,209 INFO L85 PathProgramCache]: Analyzing trace with hash 176240476, now seen corresponding path program 1 times [2021-11-22 15:21:04,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:04,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658538257] [2021-11-22 15:21:04,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:04,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:04,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:04,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:04,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-22 15:21:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:04,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:21:04,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:04,313 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 15:21:04,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-11-22 15:21:04,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:04,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:04,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:04,401 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:04,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658538257] [2021-11-22 15:21:04,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658538257] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:04,402 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:04,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-22 15:21:04,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823404896] [2021-11-22 15:21:04,402 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:04,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:21:04,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:04,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:21:04,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:21:04,403 INFO L87 Difference]: Start difference. First operand 206 states and 276 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:04,730 INFO L93 Difference]: Finished difference Result 284 states and 335 transitions. [2021-11-22 15:21:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:21:04,731 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 15:21:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:04,732 INFO L225 Difference]: With dead ends: 284 [2021-11-22 15:21:04,732 INFO L226 Difference]: Without dead ends: 284 [2021-11-22 15:21:04,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:21:04,733 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 121 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:04,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 603 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:21:04,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-11-22 15:21:04,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 206. [2021-11-22 15:21:04,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 164 states have (on average 1.6768292682926829) internal successors, (275), 205 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:04,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 275 transitions. [2021-11-22 15:21:04,740 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 275 transitions. Word has length 16 [2021-11-22 15:21:04,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:04,740 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 275 transitions. [2021-11-22 15:21:04,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:04,741 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 275 transitions. [2021-11-22 15:21:04,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:21:04,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:04,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:04,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:04,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:04,953 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:04,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:04,953 INFO L85 PathProgramCache]: Analyzing trace with hash 176237825, now seen corresponding path program 1 times [2021-11-22 15:21:04,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:04,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [129988212] [2021-11-22 15:21:04,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:04,954 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:04,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:04,954 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:04,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-22 15:21:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:05,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-22 15:21:05,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:05,037 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 [2021-11-22 15:21:05,066 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 20 [2021-11-22 15:21:05,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-22 15:21:05,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:05,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:05,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:05,195 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:05,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [129988212] [2021-11-22 15:21:05,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [129988212] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:05,196 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:05,196 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 15:21:05,196 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465362159] [2021-11-22 15:21:05,196 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:05,196 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:21:05,196 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:05,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:21:05,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:21:05,197 INFO L87 Difference]: Start difference. First operand 206 states and 275 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:05,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:05,963 INFO L93 Difference]: Finished difference Result 277 states and 337 transitions. [2021-11-22 15:21:05,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:21:05,964 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 15:21:05,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:05,966 INFO L225 Difference]: With dead ends: 277 [2021-11-22 15:21:05,966 INFO L226 Difference]: Without dead ends: 277 [2021-11-22 15:21:05,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 15:21:05,967 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 103 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:05,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 374 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-22 15:21:05,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2021-11-22 15:21:05,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 206. [2021-11-22 15:21:05,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 164 states have (on average 1.670731707317073) internal successors, (274), 205 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 274 transitions. [2021-11-22 15:21:05,973 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 274 transitions. Word has length 16 [2021-11-22 15:21:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:05,973 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 274 transitions. [2021-11-22 15:21:05,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:05,974 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 274 transitions. [2021-11-22 15:21:05,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:21:05,974 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:05,974 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:05,986 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:06,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:06,175 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:06,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:06,175 INFO L85 PathProgramCache]: Analyzing trace with hash 176237826, now seen corresponding path program 1 times [2021-11-22 15:21:06,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:06,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203878368] [2021-11-22 15:21:06,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:06,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:06,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:06,177 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:06,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-22 15:21:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:06,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-22 15:21:06,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:06,281 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 [2021-11-22 15:21:06,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-22 15:21:06,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:21:06,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 27 [2021-11-22 15:21:06,436 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2021-11-22 15:21:06,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:06,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:06,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:06,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203878368] [2021-11-22 15:21:06,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203878368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:06,919 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:06,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-22 15:21:06,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639858574] [2021-11-22 15:21:06,920 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:06,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:21:06,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:06,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:21:06,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:21:06,921 INFO L87 Difference]: Start difference. First operand 206 states and 274 transitions. Second operand has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:09,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:09,096 INFO L93 Difference]: Finished difference Result 308 states and 343 transitions. [2021-11-22 15:21:09,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:21:09,097 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 15:21:09,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:09,099 INFO L225 Difference]: With dead ends: 308 [2021-11-22 15:21:09,099 INFO L226 Difference]: Without dead ends: 308 [2021-11-22 15:21:09,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-11-22 15:21:09,100 INFO L933 BasicCegarLoop]: 100 mSDtfsCounter, 694 mSDsluCounter, 726 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 694 SdHoareTripleChecker+Valid, 826 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:09,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [694 Valid, 826 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-22 15:21:09,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2021-11-22 15:21:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 206. [2021-11-22 15:21:09,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 164 states have (on average 1.6646341463414633) internal successors, (273), 205 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:09,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 273 transitions. [2021-11-22 15:21:09,108 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 273 transitions. Word has length 16 [2021-11-22 15:21:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:09,108 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 273 transitions. [2021-11-22 15:21:09,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.272727272727273) internal successors, (25), 12 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 273 transitions. [2021-11-22 15:21:09,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:21:09,109 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:09,109 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:09,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:09,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:09,323 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr46ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:09,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash -633106150, now seen corresponding path program 1 times [2021-11-22 15:21:09,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:09,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [697096210] [2021-11-22 15:21:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:09,323 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:09,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:09,325 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:09,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-22 15:21:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:09,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:21:09,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:09,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:09,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:09,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:09,836 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:09,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [697096210] [2021-11-22 15:21:09,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [697096210] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:09,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:09,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 7 [2021-11-22 15:21:09,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589796609] [2021-11-22 15:21:09,837 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:09,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 15:21:09,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:09,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 15:21:09,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:21:09,838 INFO L87 Difference]: Start difference. First operand 206 states and 273 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:09,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:09,919 INFO L93 Difference]: Finished difference Result 239 states and 308 transitions. [2021-11-22 15:21:09,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:21:09,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 15:21:09,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:09,921 INFO L225 Difference]: With dead ends: 239 [2021-11-22 15:21:09,922 INFO L226 Difference]: Without dead ends: 239 [2021-11-22 15:21:09,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-22 15:21:09,923 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 95 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:09,923 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 581 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-11-22 15:21:09,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-11-22 15:21:09,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 206. [2021-11-22 15:21:09,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 164 states have (on average 1.6585365853658536) internal successors, (272), 205 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:09,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 272 transitions. [2021-11-22 15:21:09,930 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 272 transitions. Word has length 16 [2021-11-22 15:21:09,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:09,931 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 272 transitions. [2021-11-22 15:21:09,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:09,931 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 272 transitions. [2021-11-22 15:21:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-22 15:21:09,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:09,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:09,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2021-11-22 15:21:10,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:10,133 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:10,134 INFO L85 PathProgramCache]: Analyzing trace with hash -633108801, now seen corresponding path program 1 times [2021-11-22 15:21:10,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:10,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459654510] [2021-11-22 15:21:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:10,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:10,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:10,135 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:10,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-22 15:21:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:10,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-22 15:21:10,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:10,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:21:10,283 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:21:10,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-11-22 15:21:10,338 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-11-22 15:21:10,367 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:10,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:10,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459654510] [2021-11-22 15:21:10,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459654510] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:10,428 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:10,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-11-22 15:21:10,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648197308] [2021-11-22 15:21:10,428 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:10,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:21:10,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:10,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:21:10,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:21:10,430 INFO L87 Difference]: Start difference. First operand 206 states and 272 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:10,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:10,713 INFO L93 Difference]: Finished difference Result 172 states and 205 transitions. [2021-11-22 15:21:10,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:21:10,714 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-22 15:21:10,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:10,715 INFO L225 Difference]: With dead ends: 172 [2021-11-22 15:21:10,715 INFO L226 Difference]: Without dead ends: 172 [2021-11-22 15:21:10,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:21:10,717 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 24 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:10,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 569 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 15:21:10,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-11-22 15:21:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2021-11-22 15:21:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 125 states have (on average 1.592) internal successors, (199), 164 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 199 transitions. [2021-11-22 15:21:10,722 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 199 transitions. Word has length 16 [2021-11-22 15:21:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:10,722 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 199 transitions. [2021-11-22 15:21:10,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 6 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 199 transitions. [2021-11-22 15:21:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-22 15:21:10,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:10,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:10,746 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:10,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:10,936 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:10,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:10,936 INFO L85 PathProgramCache]: Analyzing trace with hash 1860825987, now seen corresponding path program 1 times [2021-11-22 15:21:10,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:10,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648628475] [2021-11-22 15:21:10,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:10,936 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:10,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:10,937 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:10,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-22 15:21:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:11,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:21:11,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:11,068 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 [2021-11-22 15:21:11,075 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 [2021-11-22 15:21:11,195 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:21:11,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-11-22 15:21:11,232 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:21:11,232 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 34 [2021-11-22 15:21:11,432 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-22 15:21:11,432 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 44 [2021-11-22 15:21:11,462 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 15:21:11,463 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 38 [2021-11-22 15:21:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:11,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:14,638 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-22 15:21:14,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 64 [2021-11-22 15:21:14,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:14,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:14,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648628475] [2021-11-22 15:21:14,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648628475] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:14,686 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:14,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-22 15:21:14,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858481873] [2021-11-22 15:21:14,686 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:14,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:21:14,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:14,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:21:14,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=97, Unknown=1, NotChecked=0, Total=132 [2021-11-22 15:21:14,687 INFO L87 Difference]: Start difference. First operand 165 states and 199 transitions. Second operand has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:15,250 INFO L93 Difference]: Finished difference Result 164 states and 198 transitions. [2021-11-22 15:21:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 15:21:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-22 15:21:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:15,252 INFO L225 Difference]: With dead ends: 164 [2021-11-22 15:21:15,252 INFO L226 Difference]: Without dead ends: 164 [2021-11-22 15:21:15,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=71, Invalid=168, Unknown=1, NotChecked=0, Total=240 [2021-11-22 15:21:15,253 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 224 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 254 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:15,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 382 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 147 Invalid, 0 Unknown, 254 Unchecked, 0.4s Time] [2021-11-22 15:21:15,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-11-22 15:21:15,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2021-11-22 15:21:15,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 125 states have (on average 1.584) internal successors, (198), 163 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:15,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 198 transitions. [2021-11-22 15:21:15,258 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 198 transitions. Word has length 18 [2021-11-22 15:21:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:15,260 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 198 transitions. [2021-11-22 15:21:15,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:15,261 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 198 transitions. [2021-11-22 15:21:15,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:21:15,262 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:15,262 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] [2021-11-22 15:21:15,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:15,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:15,478 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:15,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1547378243, now seen corresponding path program 1 times [2021-11-22 15:21:15,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:15,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2057787900] [2021-11-22 15:21:15,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:15,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:15,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:15,480 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:15,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-11-22 15:21:15,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:15,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:21:15,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:15,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:15,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:15,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:15,653 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:15,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2057787900] [2021-11-22 15:21:15,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2057787900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:15,653 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:15,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:21:15,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745887025] [2021-11-22 15:21:15,654 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:15,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:21:15,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:15,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:21:15,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:21:15,657 INFO L87 Difference]: Start difference. First operand 164 states and 198 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:15,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:15,930 INFO L93 Difference]: Finished difference Result 190 states and 221 transitions. [2021-11-22 15:21:15,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:21:15,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:21:15,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:15,932 INFO L225 Difference]: With dead ends: 190 [2021-11-22 15:21:15,932 INFO L226 Difference]: Without dead ends: 190 [2021-11-22 15:21:15,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:21:15,933 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 171 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:15,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 171 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:21:15,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2021-11-22 15:21:15,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 163. [2021-11-22 15:21:15,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 125 states have (on average 1.576) internal successors, (197), 162 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:15,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-11-22 15:21:15,938 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 20 [2021-11-22 15:21:15,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:15,938 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-11-22 15:21:15,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:15,938 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2021-11-22 15:21:15,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:21:15,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:15,939 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] [2021-11-22 15:21:15,957 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2021-11-22 15:21:16,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:16,150 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:16,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:16,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1547378244, now seen corresponding path program 1 times [2021-11-22 15:21:16,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:16,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572634037] [2021-11-22 15:21:16,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:16,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:16,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:16,152 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:16,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-11-22 15:21:16,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:16,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:21:16,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:16,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:16,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:16,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 15:21:16,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:16,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:16,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572634037] [2021-11-22 15:21:16,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572634037] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:16,691 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:16,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 15:21:16,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33929484] [2021-11-22 15:21:16,691 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:16,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:21:16,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:16,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:21:16,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:21:16,692 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:17,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:17,080 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2021-11-22 15:21:17,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:21:17,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:21:17,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:17,082 INFO L225 Difference]: With dead ends: 169 [2021-11-22 15:21:17,082 INFO L226 Difference]: Without dead ends: 169 [2021-11-22 15:21:17,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:21:17,083 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 836 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:17,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 121 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:21:17,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2021-11-22 15:21:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2021-11-22 15:21:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 125 states have (on average 1.568) internal successors, (196), 161 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:17,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 196 transitions. [2021-11-22 15:21:17,089 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 196 transitions. Word has length 20 [2021-11-22 15:21:17,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:17,089 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 196 transitions. [2021-11-22 15:21:17,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:17,090 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 196 transitions. [2021-11-22 15:21:17,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-22 15:21:17,090 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:17,091 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] [2021-11-22 15:21:17,103 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:17,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:17,303 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:17,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:17,303 INFO L85 PathProgramCache]: Analyzing trace with hash -34979905, now seen corresponding path program 1 times [2021-11-22 15:21:17,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:17,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313571368] [2021-11-22 15:21:17,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:17,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:17,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:17,305 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:17,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-11-22 15:21:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:17,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-22 15:21:17,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:17,377 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 [2021-11-22 15:21:17,425 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:21:17,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-22 15:21:17,622 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-11-22 15:21:17,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 35 [2021-11-22 15:21:17,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:17,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:21,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:21,788 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313571368] [2021-11-22 15:21:21,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313571368] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:21,788 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:21,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 8 [2021-11-22 15:21:21,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689695803] [2021-11-22 15:21:21,789 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:21,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-22 15:21:21,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-22 15:21:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=47, Unknown=2, NotChecked=0, Total=72 [2021-11-22 15:21:21,790 INFO L87 Difference]: Start difference. First operand 162 states and 196 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:28,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:28,144 INFO L93 Difference]: Finished difference Result 192 states and 223 transitions. [2021-11-22 15:21:28,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 15:21:28,144 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-22 15:21:28,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:28,145 INFO L225 Difference]: With dead ends: 192 [2021-11-22 15:21:28,145 INFO L226 Difference]: Without dead ends: 192 [2021-11-22 15:21:28,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=42, Invalid=87, Unknown=3, NotChecked=0, Total=132 [2021-11-22 15:21:28,146 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 390 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:28,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 241 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 138 Invalid, 0 Unknown, 70 Unchecked, 0.3s Time] [2021-11-22 15:21:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-11-22 15:21:28,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 165. [2021-11-22 15:21:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 128 states have (on average 1.5546875) internal successors, (199), 164 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:28,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 199 transitions. [2021-11-22 15:21:28,151 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 199 transitions. Word has length 20 [2021-11-22 15:21:28,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:28,152 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 199 transitions. [2021-11-22 15:21:28,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:28,152 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 199 transitions. [2021-11-22 15:21:28,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 15:21:28,153 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:28,153 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:28,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-11-22 15:21:28,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:28,364 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:28,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:28,364 INFO L85 PathProgramCache]: Analyzing trace with hash 971808068, now seen corresponding path program 1 times [2021-11-22 15:21:28,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:28,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975397909] [2021-11-22 15:21:28,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:28,365 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:28,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:28,366 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:28,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-11-22 15:21:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:28,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-22 15:21:28,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:28,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 15:21:28,629 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-22 15:21:28,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:28,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:28,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:28,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975397909] [2021-11-22 15:21:28,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975397909] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:28,813 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:28,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 12 [2021-11-22 15:21:28,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21981572] [2021-11-22 15:21:28,814 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:28,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-22 15:21:28,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:28,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-22 15:21:28,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:21:28,815 INFO L87 Difference]: Start difference. First operand 165 states and 199 transitions. Second operand has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:29,658 INFO L93 Difference]: Finished difference Result 228 states and 262 transitions. [2021-11-22 15:21:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 15:21:29,659 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-22 15:21:29,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:29,660 INFO L225 Difference]: With dead ends: 228 [2021-11-22 15:21:29,661 INFO L226 Difference]: Without dead ends: 228 [2021-11-22 15:21:29,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2021-11-22 15:21:29,662 INFO L933 BasicCegarLoop]: 101 mSDtfsCounter, 860 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:29,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [860 Valid, 426 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:21:29,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-11-22 15:21:29,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 164. [2021-11-22 15:21:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 128 states have (on average 1.546875) internal successors, (198), 163 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:29,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 198 transitions. [2021-11-22 15:21:29,666 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 198 transitions. Word has length 22 [2021-11-22 15:21:29,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:29,667 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 198 transitions. [2021-11-22 15:21:29,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 13 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:29,667 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 198 transitions. [2021-11-22 15:21:29,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 15:21:29,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:29,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:29,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:29,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:29,880 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:29,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:29,880 INFO L85 PathProgramCache]: Analyzing trace with hash 971808069, now seen corresponding path program 1 times [2021-11-22 15:21:29,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:29,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063883996] [2021-11-22 15:21:29,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:29,881 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:29,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:29,882 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:29,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-11-22 15:21:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:29,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-22 15:21:29,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:30,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:21:30,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-22 15:21:30,301 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-22 15:21:30,304 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-22 15:21:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:30,375 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:30,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 15:21:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:31,023 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:31,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063883996] [2021-11-22 15:21:31,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063883996] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:31,024 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:31,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 8] imperfect sequences [] total 17 [2021-11-22 15:21:31,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437790800] [2021-11-22 15:21:31,024 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:31,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-22 15:21:31,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-22 15:21:31,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-11-22 15:21:31,026 INFO L87 Difference]: Start difference. First operand 164 states and 198 transitions. Second operand has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:32,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:32,465 INFO L93 Difference]: Finished difference Result 218 states and 253 transitions. [2021-11-22 15:21:32,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 15:21:32,466 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-22 15:21:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:32,467 INFO L225 Difference]: With dead ends: 218 [2021-11-22 15:21:32,467 INFO L226 Difference]: Without dead ends: 218 [2021-11-22 15:21:32,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2021-11-22 15:21:32,468 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 672 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:32,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 469 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-22 15:21:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-11-22 15:21:32,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 135. [2021-11-22 15:21:32,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 101 states have (on average 1.495049504950495) internal successors, (151), 134 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:32,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 151 transitions. [2021-11-22 15:21:32,474 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 151 transitions. Word has length 22 [2021-11-22 15:21:32,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:32,474 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 151 transitions. [2021-11-22 15:21:32,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 18 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:32,475 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 151 transitions. [2021-11-22 15:21:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-22 15:21:32,476 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:32,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:32,486 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:32,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:32,683 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash 744057122, now seen corresponding path program 1 times [2021-11-22 15:21:32,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:32,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [357470499] [2021-11-22 15:21:32,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:32,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:32,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:32,684 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:32,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-11-22 15:21:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:32,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:21:32,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:35,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:35,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:21:52,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:21:52,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:21:52,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [357470499] [2021-11-22 15:21:52,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [357470499] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:21:52,666 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:21:52,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-22 15:21:52,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080905262] [2021-11-22 15:21:52,667 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:21:52,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-22 15:21:52,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:21:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-22 15:21:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=163, Unknown=8, NotChecked=0, Total=210 [2021-11-22 15:21:52,668 INFO L87 Difference]: Start difference. First operand 135 states and 151 transitions. Second operand has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:55,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:21:55,329 INFO L93 Difference]: Finished difference Result 137 states and 152 transitions. [2021-11-22 15:21:55,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 15:21:55,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-22 15:21:55,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:21:55,331 INFO L225 Difference]: With dead ends: 137 [2021-11-22 15:21:55,331 INFO L226 Difference]: Without dead ends: 124 [2021-11-22 15:21:55,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 21.7s TimeCoverageRelationStatistics Valid=60, Invalid=237, Unknown=9, NotChecked=0, Total=306 [2021-11-22 15:21:55,332 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 6 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:21:55,332 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 573 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 224 Invalid, 0 Unknown, 163 Unchecked, 0.5s Time] [2021-11-22 15:21:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-22 15:21:55,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-22 15:21:55,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 123 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:55,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 139 transitions. [2021-11-22 15:21:55,336 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 139 transitions. Word has length 22 [2021-11-22 15:21:55,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:21:55,336 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 139 transitions. [2021-11-22 15:21:55,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.0714285714285716) internal successors, (43), 15 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:21:55,337 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 139 transitions. [2021-11-22 15:21:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:21:55,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:21:55,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:21:55,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-11-22 15:21:55,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:21:55,549 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:21:55,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:21:55,550 INFO L85 PathProgramCache]: Analyzing trace with hash 61279070, now seen corresponding path program 1 times [2021-11-22 15:21:55,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:21:55,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785597104] [2021-11-22 15:21:55,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:21:55,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:21:55,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:21:55,551 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:21:55,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-11-22 15:21:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:21:55,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:21:55,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:21:55,745 INFO L354 Elim1Store]: treesize reduction 8, result has 60.0 percent of original size [2021-11-22 15:21:55,746 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 22 [2021-11-22 15:21:56,003 INFO L354 Elim1Store]: treesize reduction 38, result has 39.7 percent of original size [2021-11-22 15:21:56,003 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 38 treesize of output 55 [2021-11-22 15:21:57,011 INFO L354 Elim1Store]: treesize reduction 61, result has 37.8 percent of original size [2021-11-22 15:21:57,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 65 treesize of output 92 [2021-11-22 15:21:58,635 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2021-11-22 15:22:02,667 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 15:22:02,667 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 129 treesize of output 95 [2021-11-22 15:22:04,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:22:04,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 110 [2021-11-22 15:22:05,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:22:06,137 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 172 [2021-11-22 15:22:13,473 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:22:13,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 170 treesize of output 117 [2021-11-22 15:22:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:22:14,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:22:33,757 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_DerPreprocessor_1 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (= (_ bv0 1) (bvadd (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (bvneg (select |c_#valid| (let ((.cse2 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (select (select (let ((.cse0 (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2))) (store |c_#memory_$Pointer$.base| .cse1 (store (select |c_#memory_$Pointer$.base| .cse1) (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|) v_DerPreprocessor_1))))) (store .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| (store (select .cse0 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|) |c_ULTIMATE.start_entry_point_~intf~2#1.base|))) |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse2)))))))))))))) (_ bv1 1)))) is different from false [2021-11-22 15:22:44,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:22:44,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:22:44,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785597104] [2021-11-22 15:22:44,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785597104] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:22:44,619 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:22:44,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 13] imperfect sequences [] total 27 [2021-11-22 15:22:44,619 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626082446] [2021-11-22 15:22:44,619 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:22:44,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-22 15:22:44,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:22:44,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-22 15:22:44,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=624, Unknown=9, NotChecked=50, Total=756 [2021-11-22 15:22:44,621 INFO L87 Difference]: Start difference. First operand 124 states and 139 transitions. Second operand has 28 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:22:46,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:22:46,348 INFO L93 Difference]: Finished difference Result 123 states and 138 transitions. [2021-11-22 15:22:46,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 15:22:46,349 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:22:46,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:22:46,349 INFO L225 Difference]: With dead ends: 123 [2021-11-22 15:22:46,350 INFO L226 Difference]: Without dead ends: 123 [2021-11-22 15:22:46,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=132, Invalid=985, Unknown=9, NotChecked=64, Total=1190 [2021-11-22 15:22:46,351 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 11 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 545 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-22 15:22:46,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 1225 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 298 Invalid, 0 Unknown, 545 Unchecked, 0.8s Time] [2021-11-22 15:22:46,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-22 15:22:46,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2021-11-22 15:22:46,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 90 states have (on average 1.5333333333333334) internal successors, (138), 122 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:22:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 138 transitions. [2021-11-22 15:22:46,355 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 138 transitions. Word has length 23 [2021-11-22 15:22:46,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:22:46,356 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 138 transitions. [2021-11-22 15:22:46,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.7037037037037037) internal successors, (46), 28 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:22:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 138 transitions. [2021-11-22 15:22:46,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-22 15:22:46,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:22:46,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:22:46,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-11-22 15:22:46,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:22:46,570 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:22:46,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:22:46,570 INFO L85 PathProgramCache]: Analyzing trace with hash 61279071, now seen corresponding path program 1 times [2021-11-22 15:22:46,571 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:22:46,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164650843] [2021-11-22 15:22:46,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:22:46,571 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:22:46,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:22:46,572 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:22:46,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-11-22 15:22:46,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:22:46,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 42 conjunts are in the unsatisfiable core [2021-11-22 15:22:46,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:22:46,682 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 [2021-11-22 15:22:46,764 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:22:46,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2021-11-22 15:22:46,950 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 15:22:46,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2021-11-22 15:22:46,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-22 15:22:47,168 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 15:22:47,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:22:47,553 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-22 15:22:47,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 93 [2021-11-22 15:22:47,575 INFO L354 Elim1Store]: treesize reduction 55, result has 14.1 percent of original size [2021-11-22 15:22:47,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 74 [2021-11-22 15:22:47,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:22:47,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-22 15:22:47,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:22:47,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-22 15:22:48,299 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-22 15:22:48,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-22 15:22:48,317 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-22 15:22:48,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-22 15:22:48,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:22:48,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:00,442 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 91 treesize of output 89 [2021-11-22 15:23:06,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:06,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:06,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164650843] [2021-11-22 15:23:06,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164650843] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:06,235 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:06,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15, 16] imperfect sequences [] total 30 [2021-11-22 15:23:06,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643397144] [2021-11-22 15:23:06,235 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:06,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-11-22 15:23:06,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:06,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-11-22 15:23:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=830, Unknown=0, NotChecked=0, Total=930 [2021-11-22 15:23:06,237 INFO L87 Difference]: Start difference. First operand 123 states and 138 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:10,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:10,758 INFO L93 Difference]: Finished difference Result 122 states and 137 transitions. [2021-11-22 15:23:10,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 15:23:10,760 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-22 15:23:10,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:10,761 INFO L225 Difference]: With dead ends: 122 [2021-11-22 15:23:10,761 INFO L226 Difference]: Without dead ends: 122 [2021-11-22 15:23:10,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 18.1s TimeCoverageRelationStatistics Valid=299, Invalid=1341, Unknown=0, NotChecked=0, Total=1640 [2021-11-22 15:23:10,762 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 63 mSDsluCounter, 1167 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 1264 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:10,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 1264 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 486 Invalid, 0 Unknown, 295 Unchecked, 2.4s Time] [2021-11-22 15:23:10,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-11-22 15:23:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-11-22 15:23:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 90 states have (on average 1.5222222222222221) internal successors, (137), 121 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 137 transitions. [2021-11-22 15:23:10,767 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 137 transitions. Word has length 23 [2021-11-22 15:23:10,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:10,767 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 137 transitions. [2021-11-22 15:23:10,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 137 transitions. [2021-11-22 15:23:10,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:23:10,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:10,768 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:10,791 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:10,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:10,980 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:10,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:10,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1240354625, now seen corresponding path program 1 times [2021-11-22 15:23:10,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:10,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [880008670] [2021-11-22 15:23:10,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:10,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:10,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:10,982 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:10,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-11-22 15:23:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:11,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-22 15:23:11,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:11,134 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:11,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:11,184 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:11,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [880008670] [2021-11-22 15:23:11,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [880008670] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:11,185 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:11,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:23:11,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686876525] [2021-11-22 15:23:11,185 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:11,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:23:11,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:11,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:23:11,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:23:11,186 INFO L87 Difference]: Start difference. First operand 122 states and 137 transitions. Second operand has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:11,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:11,607 INFO L93 Difference]: Finished difference Result 181 states and 193 transitions. [2021-11-22 15:23:11,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:23:11,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 15:23:11,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:11,609 INFO L225 Difference]: With dead ends: 181 [2021-11-22 15:23:11,609 INFO L226 Difference]: Without dead ends: 181 [2021-11-22 15:23:11,609 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:23:11,610 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 275 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:11,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 218 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:23:11,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-22 15:23:11,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 120. [2021-11-22 15:23:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 90 states have (on average 1.5) internal successors, (135), 119 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:11,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2021-11-22 15:23:11,614 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 25 [2021-11-22 15:23:11,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:11,615 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2021-11-22 15:23:11,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.25) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:11,615 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2021-11-22 15:23:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-11-22 15:23:11,615 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:11,615 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:11,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:11,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:11,816 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:11,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1240354624, now seen corresponding path program 1 times [2021-11-22 15:23:11,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:11,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676411173] [2021-11-22 15:23:11,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:11,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:11,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:11,818 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:11,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-11-22 15:23:11,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:11,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-22 15:23:11,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:12,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:12,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:12,316 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 24 treesize of output 20 [2021-11-22 15:23:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:12,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:12,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676411173] [2021-11-22 15:23:12,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676411173] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:12,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:12,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-22 15:23:12,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058714178] [2021-11-22 15:23:12,635 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:12,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-22 15:23:12,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:12,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-22 15:23:12,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-22 15:23:12,637 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:13,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:13,261 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2021-11-22 15:23:13,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 15:23:13,262 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-11-22 15:23:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:13,263 INFO L225 Difference]: With dead ends: 171 [2021-11-22 15:23:13,263 INFO L226 Difference]: Without dead ends: 171 [2021-11-22 15:23:13,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2021-11-22 15:23:13,264 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 690 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:13,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [690 Valid, 162 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-22 15:23:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2021-11-22 15:23:13,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 118. [2021-11-22 15:23:13,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 90 states have (on average 1.4777777777777779) internal successors, (133), 117 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:13,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2021-11-22 15:23:13,267 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 25 [2021-11-22 15:23:13,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:13,267 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2021-11-22 15:23:13,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:13,267 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2021-11-22 15:23:13,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:23:13,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:13,268 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:13,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:13,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:13,474 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1792324491, now seen corresponding path program 1 times [2021-11-22 15:23:13,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:13,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [394962323] [2021-11-22 15:23:13,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:13,476 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:13,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:13,476 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:13,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-11-22 15:23:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:13,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:23:13,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:13,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-22 15:23:13,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:13,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:13,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:13,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:13,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [394962323] [2021-11-22 15:23:13,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [394962323] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:13,685 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:13,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 15:23:13,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306055018] [2021-11-22 15:23:13,686 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:13,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 15:23:13,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:13,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 15:23:13,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 15:23:13,687 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:14,179 INFO L93 Difference]: Finished difference Result 188 states and 209 transitions. [2021-11-22 15:23:14,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:23:14,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 15:23:14,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:14,181 INFO L225 Difference]: With dead ends: 188 [2021-11-22 15:23:14,181 INFO L226 Difference]: Without dead ends: 188 [2021-11-22 15:23:14,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 47 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-22 15:23:14,182 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 249 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:14,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 356 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-22 15:23:14,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-22 15:23:14,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 114. [2021-11-22 15:23:14,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 90 states have (on average 1.4333333333333333) internal successors, (129), 113 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:14,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 129 transitions. [2021-11-22 15:23:14,186 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 129 transitions. Word has length 28 [2021-11-22 15:23:14,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:14,187 INFO L470 AbstractCegarLoop]: Abstraction has 114 states and 129 transitions. [2021-11-22 15:23:14,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:14,187 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 129 transitions. [2021-11-22 15:23:14,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-22 15:23:14,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:14,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:14,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:14,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:14,390 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:14,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:14,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1792324490, now seen corresponding path program 1 times [2021-11-22 15:23:14,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:14,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614310090] [2021-11-22 15:23:14,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:14,391 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:14,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:14,401 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:14,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-11-22 15:23:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:14,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-22 15:23:14,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:14,517 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 [2021-11-22 15:23:14,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:14,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:14,870 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:14,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614310090] [2021-11-22 15:23:14,870 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614310090] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:14,870 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:14,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 15:23:14,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592771935] [2021-11-22 15:23:14,871 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:14,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:23:14,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:14,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:23:14,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:23:14,871 INFO L87 Difference]: Start difference. First operand 114 states and 129 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:15,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:15,706 INFO L93 Difference]: Finished difference Result 216 states and 235 transitions. [2021-11-22 15:23:15,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 15:23:15,707 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-22 15:23:15,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:15,708 INFO L225 Difference]: With dead ends: 216 [2021-11-22 15:23:15,708 INFO L226 Difference]: Without dead ends: 216 [2021-11-22 15:23:15,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:23:15,710 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 445 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:15,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 601 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 15:23:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-11-22 15:23:15,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 110. [2021-11-22 15:23:15,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 90 states have (on average 1.3888888888888888) internal successors, (125), 109 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:15,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 125 transitions. [2021-11-22 15:23:15,714 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 125 transitions. Word has length 28 [2021-11-22 15:23:15,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:15,715 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 125 transitions. [2021-11-22 15:23:15,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:15,715 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 125 transitions. [2021-11-22 15:23:15,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 15:23:15,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:15,716 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:15,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:15,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:15,928 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:15,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1079895784, now seen corresponding path program 1 times [2021-11-22 15:23:15,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:15,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304158815] [2021-11-22 15:23:15,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:15,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:15,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:15,931 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:15,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-11-22 15:23:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:16,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-22 15:23:16,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:16,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:16,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:16,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 15:23:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:16,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:16,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304158815] [2021-11-22 15:23:16,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304158815] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:16,627 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:16,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-22 15:23:16,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010894187] [2021-11-22 15:23:16,628 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:16,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-22 15:23:16,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-22 15:23:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-22 15:23:16,629 INFO L87 Difference]: Start difference. First operand 110 states and 125 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:17,028 INFO L93 Difference]: Finished difference Result 130 states and 143 transitions. [2021-11-22 15:23:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-22 15:23:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-22 15:23:17,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:17,029 INFO L225 Difference]: With dead ends: 130 [2021-11-22 15:23:17,029 INFO L226 Difference]: Without dead ends: 130 [2021-11-22 15:23:17,029 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2021-11-22 15:23:17,030 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 279 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:17,030 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [279 Valid, 146 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:23:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-22 15:23:17,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 109. [2021-11-22 15:23:17,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.3666666666666667) internal successors, (123), 108 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:17,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 123 transitions. [2021-11-22 15:23:17,033 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 123 transitions. Word has length 32 [2021-11-22 15:23:17,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:17,034 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 123 transitions. [2021-11-22 15:23:17,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 10 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:17,034 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 123 transitions. [2021-11-22 15:23:17,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-22 15:23:17,035 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:17,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:17,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:17,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:17,248 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:17,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1079895783, now seen corresponding path program 1 times [2021-11-22 15:23:17,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:17,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829638419] [2021-11-22 15:23:17,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:17,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:17,249 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:17,249 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:17,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-11-22 15:23:17,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:17,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-22 15:23:17,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:17,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:17,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:17,545 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:17,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829638419] [2021-11-22 15:23:17,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829638419] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:17,545 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:17,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-22 15:23:17,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411087514] [2021-11-22 15:23:17,545 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:17,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:23:17,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:17,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:23:17,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:23:17,546 INFO L87 Difference]: Start difference. First operand 109 states and 123 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:17,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:17,830 INFO L93 Difference]: Finished difference Result 148 states and 157 transitions. [2021-11-22 15:23:17,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:23:17,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-11-22 15:23:17,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:17,831 INFO L225 Difference]: With dead ends: 148 [2021-11-22 15:23:17,831 INFO L226 Difference]: Without dead ends: 148 [2021-11-22 15:23:17,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:23:17,832 INFO L933 BasicCegarLoop]: 81 mSDtfsCounter, 113 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:17,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 170 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-22 15:23:17,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2021-11-22 15:23:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 109. [2021-11-22 15:23:17,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 90 states have (on average 1.3555555555555556) internal successors, (122), 108 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:17,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 122 transitions. [2021-11-22 15:23:17,836 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 122 transitions. Word has length 32 [2021-11-22 15:23:17,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:17,836 INFO L470 AbstractCegarLoop]: Abstraction has 109 states and 122 transitions. [2021-11-22 15:23:17,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 4 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:17,837 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 122 transitions. [2021-11-22 15:23:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-22 15:23:17,837 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:17,837 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:17,854 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2021-11-22 15:23:18,050 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:18,050 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:18,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:18,051 INFO L85 PathProgramCache]: Analyzing trace with hash -882934194, now seen corresponding path program 1 times [2021-11-22 15:23:18,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:18,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593419608] [2021-11-22 15:23:18,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:18,051 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:18,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:18,052 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:18,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-11-22 15:23:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:18,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:23:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:18,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:18,235 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:18,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593419608] [2021-11-22 15:23:18,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593419608] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:18,235 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:18,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:23:18,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283730321] [2021-11-22 15:23:18,236 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:18,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:23:18,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:18,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:23:18,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:23:18,236 INFO L87 Difference]: Start difference. First operand 109 states and 122 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:18,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:18,258 INFO L93 Difference]: Finished difference Result 165 states and 183 transitions. [2021-11-22 15:23:18,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 15:23:18,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-11-22 15:23:18,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:18,260 INFO L225 Difference]: With dead ends: 165 [2021-11-22 15:23:18,260 INFO L226 Difference]: Without dead ends: 165 [2021-11-22 15:23:18,260 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:23:18,261 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 45 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:18,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 332 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:23:18,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-11-22 15:23:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 113. [2021-11-22 15:23:18,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 112 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:18,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2021-11-22 15:23:18,265 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 33 [2021-11-22 15:23:18,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:18,265 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2021-11-22 15:23:18,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2021-11-22 15:23:18,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:23:18,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:18,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:18,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:18,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:18,478 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:18,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:18,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1661395474, now seen corresponding path program 1 times [2021-11-22 15:23:18,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:18,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2119987827] [2021-11-22 15:23:18,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:18,479 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:18,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:18,479 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:18,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-11-22 15:23:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:18,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 15:23:18,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:18,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:18,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:18,682 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:18,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2119987827] [2021-11-22 15:23:18,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2119987827] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:18,682 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:18,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-22 15:23:18,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360626549] [2021-11-22 15:23:18,682 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:18,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 15:23:18,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 15:23:18,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 15:23:18,683 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:18,718 INFO L93 Difference]: Finished difference Result 215 states and 233 transitions. [2021-11-22 15:23:18,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:23:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:23:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:18,720 INFO L225 Difference]: With dead ends: 215 [2021-11-22 15:23:18,720 INFO L226 Difference]: Without dead ends: 215 [2021-11-22 15:23:18,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:23:18,721 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 139 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:18,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 329 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:23:18,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-11-22 15:23:18,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 115. [2021-11-22 15:23:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 96 states have (on average 1.3333333333333333) internal successors, (128), 114 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 128 transitions. [2021-11-22 15:23:18,725 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 128 transitions. Word has length 34 [2021-11-22 15:23:18,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:18,726 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 128 transitions. [2021-11-22 15:23:18,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:18,726 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 128 transitions. [2021-11-22 15:23:18,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:23:18,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:18,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:18,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:18,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:18,938 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1602234488, now seen corresponding path program 1 times [2021-11-22 15:23:18,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:18,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [502173424] [2021-11-22 15:23:18,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:18,939 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:18,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:18,940 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:18,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-11-22 15:23:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:19,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 35 conjunts are in the unsatisfiable core [2021-11-22 15:23:19,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:19,193 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2021-11-22 15:23:19,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:19,394 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2021-11-22 15:23:19,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2021-11-22 15:23:19,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:19,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:24,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:24,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:24,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [502173424] [2021-11-22 15:23:24,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [502173424] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:24,123 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:24,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 8] imperfect sequences [] total 16 [2021-11-22 15:23:24,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058184663] [2021-11-22 15:23:24,123 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:24,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-22 15:23:24,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:24,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-22 15:23:24,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=224, Unknown=2, NotChecked=0, Total=272 [2021-11-22 15:23:24,125 INFO L87 Difference]: Start difference. First operand 115 states and 128 transitions. Second operand has 17 states, 16 states have (on average 4.0) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:26,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:26,012 INFO L93 Difference]: Finished difference Result 212 states and 223 transitions. [2021-11-22 15:23:26,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-22 15:23:26,012 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:23:26,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:26,014 INFO L225 Difference]: With dead ends: 212 [2021-11-22 15:23:26,014 INFO L226 Difference]: Without dead ends: 212 [2021-11-22 15:23:26,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=230, Invalid=580, Unknown=2, NotChecked=0, Total=812 [2021-11-22 15:23:26,015 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 671 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:26,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 634 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 470 Invalid, 0 Unknown, 122 Unchecked, 1.3s Time] [2021-11-22 15:23:26,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-22 15:23:26,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 122. [2021-11-22 15:23:26,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.3203883495145632) internal successors, (136), 121 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:26,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2021-11-22 15:23:26,020 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 34 [2021-11-22 15:23:26,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:26,021 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2021-11-22 15:23:26,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.0) internal successors, (64), 17 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:26,021 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2021-11-22 15:23:26,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:23:26,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:26,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:26,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2021-11-22 15:23:26,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:26,234 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:26,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:26,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1602234487, now seen corresponding path program 1 times [2021-11-22 15:23:26,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:26,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451161229] [2021-11-22 15:23:26,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:26,237 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:26,238 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:26,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-11-22 15:23:26,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:26,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 40 conjunts are in the unsatisfiable core [2021-11-22 15:23:26,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:26,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2021-11-22 15:23:26,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:23:26,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:26,899 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2021-11-22 15:23:26,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:26,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2021-11-22 15:23:27,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 23 [2021-11-22 15:23:27,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2021-11-22 15:23:27,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:27,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:29,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-22 15:23:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:29,641 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:29,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451161229] [2021-11-22 15:23:29,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451161229] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:29,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:29,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 10] imperfect sequences [] total 21 [2021-11-22 15:23:29,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253448657] [2021-11-22 15:23:29,642 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:29,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-22 15:23:29,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:29,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-22 15:23:29,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2021-11-22 15:23:29,644 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:32,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:32,688 INFO L93 Difference]: Finished difference Result 248 states and 259 transitions. [2021-11-22 15:23:32,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-22 15:23:32,689 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:23:32,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:32,690 INFO L225 Difference]: With dead ends: 248 [2021-11-22 15:23:32,691 INFO L226 Difference]: Without dead ends: 248 [2021-11-22 15:23:32,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=298, Invalid=824, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 15:23:32,692 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 779 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:32,692 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 679 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 499 Invalid, 0 Unknown, 137 Unchecked, 1.9s Time] [2021-11-22 15:23:32,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2021-11-22 15:23:32,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 122. [2021-11-22 15:23:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 121 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 135 transitions. [2021-11-22 15:23:32,696 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 135 transitions. Word has length 34 [2021-11-22 15:23:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:32,696 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 135 transitions. [2021-11-22 15:23:32,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.142857142857143) internal successors, (66), 22 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 135 transitions. [2021-11-22 15:23:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-22 15:23:32,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:32,697 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:32,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:32,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:32,897 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1393566260, now seen corresponding path program 1 times [2021-11-22 15:23:32,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:32,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739554836] [2021-11-22 15:23:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:32,898 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:32,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:32,899 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:32,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-11-22 15:23:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:32,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 15:23:32,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:33,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:33,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:33,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:33,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739554836] [2021-11-22 15:23:33,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739554836] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:33,102 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:33,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-22 15:23:33,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949660354] [2021-11-22 15:23:33,103 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:33,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 15:23:33,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:33,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 15:23:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 15:23:33,105 INFO L87 Difference]: Start difference. First operand 122 states and 135 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:33,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:33,156 INFO L93 Difference]: Finished difference Result 158 states and 168 transitions. [2021-11-22 15:23:33,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 15:23:33,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-11-22 15:23:33,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:33,157 INFO L225 Difference]: With dead ends: 158 [2021-11-22 15:23:33,157 INFO L226 Difference]: Without dead ends: 158 [2021-11-22 15:23:33,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 15:23:33,158 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 216 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:33,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 355 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 15:23:33,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-11-22 15:23:33,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 117. [2021-11-22 15:23:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.2959183673469388) internal successors, (127), 116 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:33,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 127 transitions. [2021-11-22 15:23:33,163 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 127 transitions. Word has length 34 [2021-11-22 15:23:33,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:33,163 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 127 transitions. [2021-11-22 15:23:33,164 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:33,164 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 127 transitions. [2021-11-22 15:23:33,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:23:33,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:33,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:33,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-11-22 15:23:33,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:33,377 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:33,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:33,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1870338543, now seen corresponding path program 1 times [2021-11-22 15:23:33,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:33,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026785065] [2021-11-22 15:23:33,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:33,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:33,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:33,380 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:33,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-11-22 15:23:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:33,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 52 conjunts are in the unsatisfiable core [2021-11-22 15:23:33,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:33,544 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 [2021-11-22 15:23:33,614 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 15:23:33,614 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 17 [2021-11-22 15:23:33,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-11-22 15:23:33,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:23:34,530 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:34,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 69 [2021-11-22 15:23:34,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:34,537 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:23:34,557 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-22 15:23:34,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 54 [2021-11-22 15:23:34,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 42 [2021-11-22 15:23:34,987 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:23:34,987 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 23 [2021-11-22 15:23:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:35,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:23:40,101 INFO L354 Elim1Store]: treesize reduction 5, result has 91.1 percent of original size [2021-11-22 15:23:40,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 79 [2021-11-22 15:23:41,403 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-22 15:23:41,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1592 treesize of output 1474 [2021-11-22 15:23:41,418 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1300 treesize of output 1240 [2021-11-22 15:23:41,458 INFO L354 Elim1Store]: treesize reduction 24, result has 14.3 percent of original size [2021-11-22 15:23:41,459 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 1434 treesize of output 1326 [2021-11-22 15:23:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:42,580 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:23:42,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026785065] [2021-11-22 15:23:42,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026785065] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-22 15:23:42,580 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-22 15:23:42,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17, 17] imperfect sequences [] total 32 [2021-11-22 15:23:42,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345032514] [2021-11-22 15:23:42,581 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-22 15:23:42,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-11-22 15:23:42,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-22 15:23:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-11-22 15:23:42,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=950, Unknown=2, NotChecked=0, Total=1056 [2021-11-22 15:23:42,582 INFO L87 Difference]: Start difference. First operand 117 states and 127 transitions. Second operand has 33 states, 32 states have (on average 2.09375) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:45,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 15:23:45,580 INFO L93 Difference]: Finished difference Result 139 states and 148 transitions. [2021-11-22 15:23:45,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-22 15:23:45,581 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2021-11-22 15:23:45,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 15:23:45,582 INFO L225 Difference]: With dead ends: 139 [2021-11-22 15:23:45,582 INFO L226 Difference]: Without dead ends: 139 [2021-11-22 15:23:45,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=378, Invalid=1876, Unknown=2, NotChecked=0, Total=2256 [2021-11-22 15:23:45,583 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 364 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1178 SdHoareTripleChecker+Invalid, 829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 335 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-22 15:23:45,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [364 Valid, 1178 Invalid, 829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 444 Invalid, 0 Unknown, 335 Unchecked, 1.1s Time] [2021-11-22 15:23:45,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2021-11-22 15:23:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 118. [2021-11-22 15:23:45,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 99 states have (on average 1.303030303030303) internal successors, (129), 117 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2021-11-22 15:23:45,589 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 35 [2021-11-22 15:23:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 15:23:45,589 INFO L470 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2021-11-22 15:23:45,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.09375) internal successors, (67), 33 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-22 15:23:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2021-11-22 15:23:45,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-22 15:23:45,590 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 15:23:45,590 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 15:23:45,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2021-11-22 15:23:45,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 [2021-11-22 15:23:45,805 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 48 more)] === [2021-11-22 15:23:45,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 15:23:45,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1870338544, now seen corresponding path program 1 times [2021-11-22 15:23:45,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-22 15:23:45,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657781294] [2021-11-22 15:23:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:23:45,806 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-22 15:23:45,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat [2021-11-22 15:23:45,807 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-22 15:23:45,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-11-22 15:23:45,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:23:45,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-22 15:23:45,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:23:45,996 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 [2021-11-22 15:23:46,088 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:23:46,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 30 [2021-11-22 15:23:46,261 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 [2021-11-22 15:23:46,335 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 15:23:46,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2021-11-22 15:23:46,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 15:23:46,620 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:23:47,086 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 15:23:47,086 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-22 15:23:47,114 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-22 15:23:47,114 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-22 15:23:47,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:47,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-22 15:23:47,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:47,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-22 15:23:48,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:48,091 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:23:48,124 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-22 15:23:48,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 110 [2021-11-22 15:23:48,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:23:48,134 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:23:48,163 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-22 15:23:48,163 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 62 [2021-11-22 15:23:49,021 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-22 15:23:49,022 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-22 15:23:49,054 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-22 15:23:49,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-22 15:23:49,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:23:49,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:24:48,685 WARN L227 SmtUtils]: Spent 8.58s on a formula simplification that was a NOOP. DAG size: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-22 15:24:50,835 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (.cse4 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_5))) (.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse6 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse2 (store (store (select .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse6 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset|))) (select (select (store .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse2) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_4)) |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse5 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse6 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|) .cse5)) (bvadd (_ bv4294967292 32) (select .cse2 .cse5)))))))) (bvule (bvadd .cse0 (_ bv7 32)) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_5 (_ BitVec 32)) (v_DerPreprocessor_4 (_ BitVec 32)) (v_prenex_2 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32)) (v_prenex_1 (_ BitVec 32))) (let ((.cse15 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (.cse16 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse15 (store (select |c_#memory_$Pointer$.base| .cse15) .cse16 v_DerPreprocessor_4))) (.cse7 (store |c_#memory_$Pointer$.offset| .cse15 (store (select |c_#memory_$Pointer$.offset| .cse15) .cse16 v_DerPreprocessor_5))) (.cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse14 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse8 (store (store (select .cse7 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse14 v_prenex_1)) (.cse12 (store (store (select .cse11 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse14 v_prenex_2))) (let ((.cse9 (select .cse12 .cse13)) (.cse10 (bvadd (_ bv4294967292 32) (select .cse8 .cse13)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse7 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse8) .cse9) .cse10)) (select |c_#length| (select (select (store .cse11 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse12) .cse9) .cse10))))))))) is different from false [2021-11-22 15:24:51,746 INFO L354 Elim1Store]: treesize reduction 377, result has 24.6 percent of original size [2021-11-22 15:24:51,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 411690 treesize of output 313336 [2021-11-22 15:25:08,476 WARN L227 SmtUtils]: Spent 16.36s on a formula simplification. DAG size of input: 65 DAG size of output: 41 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 15:25:08,477 INFO L354 Elim1Store]: treesize reduction 168, result has 42.5 percent of original size [2021-11-22 15:25:08,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 87097342 treesize of output 53346445 [2021-11-22 15:26:10,955 WARN L227 SmtUtils]: Spent 1.04m on a formula simplification that was a NOOP. DAG size: 1219 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:27:11,678 WARN L227 SmtUtils]: Spent 1.01m on a formula simplification that was a NOOP. DAG size: 1211 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:27:11,950 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:27:11,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 53739701 treesize of output 51511477 [2021-11-22 15:28:19,405 WARN L227 SmtUtils]: Spent 1.12m on a formula simplification that was a NOOP. DAG size: 1225 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:29:29,781 WARN L227 SmtUtils]: Spent 1.17m on a formula simplification that was a NOOP. DAG size: 1220 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:29:30,051 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:29:30,053 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 51511487 treesize of output 49283291 [2021-11-22 15:30:42,106 WARN L227 SmtUtils]: Spent 1.20m on a formula simplification that was a NOOP. DAG size: 1228 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-22 15:30:44,807 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-22 15:30:44,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657781294] [2021-11-22 15:30:44,808 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:30:44,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1898574006] [2021-11-22 15:30:44,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:30:44,809 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-22 15:30:44,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/cvc4 [2021-11-22 15:30:44,814 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-22 15:30:44,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2021-11-22 15:30:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:30:45,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-22 15:30:45,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:30:45,427 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 [2021-11-22 15:30:45,509 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:30:45,509 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-22 15:30:45,686 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 15:30:45,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 31 [2021-11-22 15:30:45,721 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-22 15:30:45,812 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:30:45,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 15:30:46,141 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 15:30:46,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-22 15:30:46,179 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-22 15:30:46,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-22 15:30:46,297 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:30:46,298 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-22 15:30:46,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:30:46,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-22 15:30:47,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:30:47,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:30:47,461 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-22 15:30:47,462 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 110 [2021-11-22 15:30:47,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:30:47,469 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:30:47,494 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-22 15:30:47,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 62 [2021-11-22 15:30:47,989 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-22 15:30:47,990 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-22 15:30:48,015 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-22 15:30:48,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-22 15:30:48,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:30:48,025 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 15:31:41,669 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (v_prenex_4 (_ BitVec 32)) (v_prenex_3 (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (.cse4 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| .cse3 (store (select |c_#memory_$Pointer$.offset| .cse3) .cse4 v_DerPreprocessor_7))) (.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse6 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse2 (store (store (select .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse6 v_prenex_3))) (select (select (store .cse1 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse2) (select (store (store (select (store |c_#memory_$Pointer$.base| .cse3 (store (select |c_#memory_$Pointer$.base| .cse3) .cse4 v_DerPreprocessor_6)) |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse5 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse6 v_prenex_4) .cse5)) (bvadd (_ bv4294967292 32) (select .cse2 .cse5)))))))) (bvule (bvadd (_ bv7 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_DerPreprocessor_7 (_ BitVec 32)) (v_DerPreprocessor_6 (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset| (_ BitVec 32)) (|ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base| (_ BitVec 32)) (|ULTIMATE.start_entry_point_#t~mem57#1.offset| (_ BitVec 32))) (let ((.cse15 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_entry_point_~intf~2#1.base|) (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|))) (.cse16 (bvadd (_ bv7 32) |ULTIMATE.start_entry_point_#t~mem57#1.offset|))) (let ((.cse11 (store |c_#memory_$Pointer$.base| .cse15 (store (select |c_#memory_$Pointer$.base| .cse15) .cse16 v_DerPreprocessor_6))) (.cse7 (store |c_#memory_$Pointer$.offset| .cse15 (store (select |c_#memory_$Pointer$.offset| .cse15) .cse16 v_DerPreprocessor_7))) (.cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|)) (.cse14 (bvadd (_ bv4 32) |c_ULTIMATE.start_entry_point_~hdev~0#1.offset|))) (let ((.cse8 (store (store (select .cse7 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 (bvadd (_ bv8 32) |c_ULTIMATE.start_entry_point_~intf~2#1.offset|)) .cse14 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.offset|)) (.cse12 (store (store (select .cse11 |c_ULTIMATE.start_entry_point_~hdev~0#1.base|) .cse13 |c_ULTIMATE.start_entry_point_~intf~2#1.base|) .cse14 |ULTIMATE.start_ldv_dev_set_drvdata_~data#1.base|))) (let ((.cse9 (select .cse12 .cse13)) (.cse10 (bvadd (_ bv4294967292 32) (select .cse8 .cse13)))) (bvule (bvadd (_ bv8 32) (select (select (store .cse7 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse8) .cse9) .cse10)) (select |c_#length| (select (select (store .cse11 |c_ULTIMATE.start_entry_point_~hdev~0#1.base| .cse12) .cse9) .cse10))))))))) is different from false [2021-11-22 15:31:42,416 INFO L354 Elim1Store]: treesize reduction 377, result has 24.6 percent of original size [2021-11-22 15:31:42,417 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 14730 treesize of output 10296 [2021-11-22 15:31:50,674 WARN L227 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 15:31:50,675 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:31:50,675 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 10398 treesize of output 6613 [2021-11-22 15:31:50,883 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:31:50,884 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6609 treesize of output 6359 [2021-11-22 15:31:51,013 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:31:51,014 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 6359 treesize of output 6119 [2021-11-22 15:31:51,204 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 24 treesize of output 4 [2021-11-22 15:32:27,484 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:32:27,485 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 44 [2021-11-22 15:32:44,785 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:32:44,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 7067 treesize of output 7067 [2021-11-22 15:33:44,858 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:33:44,858 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 44 [2021-11-22 15:33:44,988 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:33:44,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 365 treesize of output 353 [2021-11-22 15:33:47,285 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-22 15:33:47,286 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 102 [2021-11-22 15:33:47,703 WARN L234 Elim1Store]: Array PQE input equivalent to true [2021-11-22 15:33:47,944 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:33:47,951 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 93 treesize of output 85 [2021-11-22 15:34:05,674 WARN L227 SmtUtils]: Spent 17.06s on a formula simplification. DAG size of input: 70 DAG size of output: 29 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 15:34:05,675 INFO L354 Elim1Store]: treesize reduction 448, result has 10.4 percent of original size [2021-11-22 15:34:05,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 102762 treesize of output 78257 [2021-11-22 15:34:22,335 WARN L227 SmtUtils]: Spent 16.53s on a formula simplification. DAG size of input: 65 DAG size of output: 47 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-22 15:34:22,336 INFO L354 Elim1Store]: treesize reduction 204, result has 30.1 percent of original size [2021-11-22 15:34:22,337 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1360789 treesize of output 833596 [2021-11-22 15:34:24,976 INFO L354 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2021-11-22 15:34:24,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 839748 treesize of output 804942 [2021-11-22 15:34:26,466 INFO L354 Elim1Store]: treesize reduction 28, result has 42.9 percent of original size [2021-11-22 15:34:26,467 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 804942 treesize of output 770144 [2021-11-22 15:34:28,880 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: BigInteger out of long range [2021-11-22 15:34:28,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656447083] [2021-11-22 15:34:28,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 15:34:28,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 15:34:28,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 15:34:28,892 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 15:34:28,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eebe62d6-f916-4a01-a51b-e006a108e44a/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2021-11-22 15:34:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 15:34:29,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-22 15:34:29,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 15:34:29,056 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 [2021-11-22 15:34:29,160 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-22 15:34:29,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 29 [2021-11-22 15:34:29,374 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-11-22 15:34:29,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 29 [2021-11-22 15:34:29,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2021-11-22 15:34:29,532 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-22 15:34:29,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-22 15:34:29,966 INFO L354 Elim1Store]: treesize reduction 41, result has 18.0 percent of original size [2021-11-22 15:34:29,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 69 [2021-11-22 15:34:30,006 INFO L354 Elim1Store]: treesize reduction 59, result has 13.2 percent of original size [2021-11-22 15:34:30,007 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 44 [2021-11-22 15:34:30,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:34:30,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 54 [2021-11-22 15:34:30,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:34:30,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 85 [2021-11-22 15:34:31,494 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:34:31,495 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:34:31,531 INFO L354 Elim1Store]: treesize reduction 35, result has 27.1 percent of original size [2021-11-22 15:34:31,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 110 [2021-11-22 15:34:31,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-22 15:34:31,541 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-22 15:34:31,571 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-11-22 15:34:31,574 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 95 treesize of output 62 [2021-11-22 15:34:32,132 INFO L354 Elim1Store]: treesize reduction 30, result has 9.1 percent of original size [2021-11-22 15:34:32,132 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 102 treesize of output 54 [2021-11-22 15:34:32,166 INFO L354 Elim1Store]: treesize reduction 18, result has 14.3 percent of original size [2021-11-22 15:34:32,166 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 35 [2021-11-22 15:34:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 15:34:32,180 INFO L328 TraceCheckSpWp]: Computing backward predicates...