./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF --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 ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:13:50,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:13:50,436 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:13:50,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:13:50,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:13:50,473 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:13:50,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:13:50,479 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:13:50,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:13:50,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:13:50,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:13:50,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:13:50,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:13:50,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:13:50,503 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:13:50,510 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:13:50,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:13:50,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:13:50,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:13:50,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:13:50,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:13:50,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:13:50,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:13:50,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:13:50,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:13:50,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:13:50,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:13:50,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:13:50,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:13:50,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:13:50,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:13:50,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:13:50,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:13:50,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:13:50,566 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:13:50,566 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:13:50,567 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:13:50,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:13:50,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:13:50,569 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:13:50,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:13:50,571 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 07:13:50,625 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:13:50,625 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:13:50,626 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:13:50,626 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:13:50,633 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:13:50,634 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:13:50,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:13:50,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:13:50,635 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:13:50,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:13:50,637 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:13:50,637 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:13:50,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:13:50,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:13:50,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:13:50,638 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:13:50,638 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:13:50,638 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:13:50,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:13:50,639 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:13:50,639 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:13:50,639 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:13:50,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:13:50,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:13:50,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:13:50,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:13:50,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:13:50,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:13:50,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:13:50,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:13:50,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:13:50,643 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_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 [2021-11-20 07:13:50,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:13:50,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:13:50,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:13:50,937 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:13:50,938 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:13:50,939 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-20 07:13:51,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/5bab53dbd/c4f16046b7944d0fb88c0bdd9ad0d82f/FLAGe49045d7f [2021-11-20 07:13:51,585 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:13:51,586 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-20 07:13:51,602 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/5bab53dbd/c4f16046b7944d0fb88c0bdd9ad0d82f/FLAGe49045d7f [2021-11-20 07:13:51,880 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/5bab53dbd/c4f16046b7944d0fb88c0bdd9ad0d82f [2021-11-20 07:13:51,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:13:51,884 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:13:51,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:51,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:13:51,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:13:51,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:51" (1/1) ... [2021-11-20 07:13:51,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d830ed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:51, skipping insertion in model container [2021-11-20 07:13:51,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:51" (1/1) ... [2021-11-20 07:13:51,904 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:13:51,943 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:13:52,232 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:52,241 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) [2021-11-20 07:13:52,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@419b788a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:52, skipping insertion in model container [2021-11-20 07:13:52,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:52,243 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 07:13:52,245 INFO L158 Benchmark]: Toolchain (without parser) took 359.93ms. Allocated memory is still 117.4MB. Free memory was 76.6MB in the beginning and 89.3MB in the end (delta: -12.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:13:52,245 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 07:13:52,246 INFO L158 Benchmark]: CACSL2BoogieTranslator took 351.66ms. Allocated memory is still 117.4MB. Free memory was 76.5MB in the beginning and 89.3MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 07:13:52,248 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 117.4MB. Free memory is still 94.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 351.66ms. Allocated memory is still 117.4MB. Free memory was 76.5MB in the beginning and 89.3MB in the end (delta: -12.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 529]: 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_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF --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 ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:13:54,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:13:54,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:13:54,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:13:54,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:13:54,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:13:54,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:13:54,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:13:54,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:13:54,575 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:13:54,576 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:13:54,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:13:54,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:13:54,580 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:13:54,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:13:54,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:13:54,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:13:54,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:13:54,587 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:13:54,590 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:13:54,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:13:54,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:13:54,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:13:54,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:13:54,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:13:54,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:13:54,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:13:54,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:13:54,605 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:13:54,606 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:13:54,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:13:54,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:13:54,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:13:54,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:13:54,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:13:54,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:13:54,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:13:54,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:13:54,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:13:54,632 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:13:54,633 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:13:54,634 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 07:13:54,686 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:13:54,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:13:54,688 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:13:54,688 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:13:54,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:13:54,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:13:54,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:13:54,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:13:54,692 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:13:54,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:13:54,694 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:13:54,695 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 07:13:54,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:13:54,695 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:13:54,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:13:54,696 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 07:13:54,697 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 07:13:54,697 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 07:13:54,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:13:54,698 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 07:13:54,698 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 07:13:54,698 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 07:13:54,699 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:13:54,699 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:13:54,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:13:54,700 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:13:54,700 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:13:54,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:13:54,701 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:13:54,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:13:54,702 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 07:13:54,702 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 07:13:54,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:13:54,703 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 07:13:54,704 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_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef47df31d033e531a0040913ad039c21826bf787c77c5128ceae3ef436a47b49 [2021-11-20 07:13:55,196 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:13:55,229 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:13:55,232 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:13:55,234 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:13:55,235 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:13:55,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-20 07:13:55,316 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/2a64f2ce5/b46e287078f04df591dd89cead076d83/FLAGa13b390b2 [2021-11-20 07:13:56,123 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:13:56,124 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/sv-benchmarks/c/list-ext-properties/test-0019_1-2.i [2021-11-20 07:13:56,140 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/2a64f2ce5/b46e287078f04df591dd89cead076d83/FLAGa13b390b2 [2021-11-20 07:13:56,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/data/2a64f2ce5/b46e287078f04df591dd89cead076d83 [2021-11-20 07:13:56,365 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:13:56,367 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:13:56,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:56,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:13:56,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:13:56,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:56" (1/1) ... [2021-11-20 07:13:56,384 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fcf81b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:56, skipping insertion in model container [2021-11-20 07:13:56,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:13:56" (1/1) ... [2021-11-20 07:13:56,396 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:13:56,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:13:56,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:56,838 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 07:13:56,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:13:56,893 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:56,900 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:13:56,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:13:57,014 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:13:57,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57 WrapperNode [2021-11-20 07:13:57,015 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:13:57,017 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:13:57,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:13:57,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:13:57,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,062 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,090 INFO L137 Inliner]: procedures = 128, calls = 32, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 65 [2021-11-20 07:13:57,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:13:57,091 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:13:57,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:13:57,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:13:57,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,127 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:13:57,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:13:57,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:13:57,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:13:57,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (1/1) ... [2021-11-20 07:13:57,154 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:13:57,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:13:57,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:13:57,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:13:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-20 07:13:57,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 07:13:57,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:13:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 07:13:57,271 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 07:13:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 07:13:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 07:13:57,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-20 07:13:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-20 07:13:57,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:13:57,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:13:57,415 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:13:57,418 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:13:57,895 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:13:57,906 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:13:57,907 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 07:13:57,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:57 BoogieIcfgContainer [2021-11-20 07:13:57,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:13:57,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:13:57,921 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:13:57,925 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:13:57,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:13:56" (1/3) ... [2021-11-20 07:13:57,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de038e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:13:57, skipping insertion in model container [2021-11-20 07:13:57,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:13:57" (2/3) ... [2021-11-20 07:13:57,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de038e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:13:57, skipping insertion in model container [2021-11-20 07:13:57,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:13:57" (3/3) ... [2021-11-20 07:13:57,929 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0019_1-2.i [2021-11-20 07:13:57,936 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:13:57,936 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 35 error locations. [2021-11-20 07:13:57,993 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:13:58,002 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 [2021-11-20 07:13:58,002 INFO L340 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2021-11-20 07:13:58,022 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 69 states have internal predecessors, (70), 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) [2021-11-20 07:13:58,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 07:13:58,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:58,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 07:13:58,032 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:13:58,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:58,039 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-11-20 07:13:58,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:13:58,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327494423] [2021-11-20 07:13:58,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:58,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:13:58,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:13:58,077 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:13:58,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 07:13:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:58,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:13:58,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:58,342 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 07:13:58,345 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-11-20 07:13:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:58,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:13:58,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:58,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:13:58,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327494423] [2021-11-20 07:13:58,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327494423] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:58,441 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:58,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:13:58,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341815706] [2021-11-20 07:13:58,444 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:58,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:13:58,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:13:58,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:13:58,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:58,483 INFO L87 Difference]: Start difference. First operand has 70 states, 34 states have (on average 2.0588235294117645) internal successors, (70), 69 states have internal predecessors, (70), 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 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 07:13:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:58,644 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2021-11-20 07:13:58,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:13:58,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2021-11-20 07:13:58,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:58,658 INFO L225 Difference]: With dead ends: 66 [2021-11-20 07:13:58,658 INFO L226 Difference]: Without dead ends: 64 [2021-11-20 07:13:58,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:13:58,664 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 50 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:58,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 38 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:13:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-20 07:13:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-11-20 07:13:58,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 63 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) [2021-11-20 07:13:58,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2021-11-20 07:13:58,713 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 3 [2021-11-20 07:13:58,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:58,714 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2021-11-20 07:13:58,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2021-11-20 07:13:58,714 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2021-11-20 07:13:58,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-20 07:13:58,715 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:58,715 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-20 07:13:58,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:58,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:13:58,927 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:13:58,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:58,927 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-11-20 07:13:58,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:13:58,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067562193] [2021-11-20 07:13:58,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:58,929 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:13:58,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:13:58,930 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:13:58,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 07:13:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:59,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 07:13:59,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:59,069 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:13:59,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 20 treesize of output 21 [2021-11-20 07:13:59,087 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 22 treesize of output 20 [2021-11-20 07:13:59,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:59,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:13:59,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:13:59,265 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:13:59,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067562193] [2021-11-20 07:13:59,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067562193] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:13:59,266 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:13:59,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:13:59,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702315441] [2021-11-20 07:13:59,269 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:13:59,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:13:59,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:13:59,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:13:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:13:59,274 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 07:13:59,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:13:59,586 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2021-11-20 07:13:59,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:13:59,590 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 3 [2021-11-20 07:13:59,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:13:59,592 INFO L225 Difference]: With dead ends: 63 [2021-11-20 07:13:59,592 INFO L226 Difference]: Without dead ends: 63 [2021-11-20 07:13:59,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:13:59,594 INFO L933 BasicCegarLoop]: 51 mSDtfsCounter, 17 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:13:59,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 108 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2021-11-20 07:13:59,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-20 07:13:59,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-11-20 07:13:59,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 33 states have (on average 1.9090909090909092) internal successors, (63), 62 states have internal predecessors, (63), 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) [2021-11-20 07:13:59,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 63 transitions. [2021-11-20 07:13:59,604 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 63 transitions. Word has length 3 [2021-11-20 07:13:59,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:13:59,604 INFO L470 AbstractCegarLoop]: Abstraction has 63 states and 63 transitions. [2021-11-20 07:13:59,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-11-20 07:13:59,604 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 63 transitions. [2021-11-20 07:13:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-20 07:13:59,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:13:59,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-20 07:13:59,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:13:59,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:13:59,819 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:13:59,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:13:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash 28691811, now seen corresponding path program 1 times [2021-11-20 07:13:59,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:13:59,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1423369954] [2021-11-20 07:13:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:13:59,821 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:13:59,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:13:59,822 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:13:59,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 07:13:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:13:59,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 07:13:59,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:13:59,945 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 07:13:59,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 20 treesize of output 21 [2021-11-20 07:13:59,951 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 22 treesize of output 20 [2021-11-20 07:14:00,153 INFO L354 Elim1Store]: treesize reduction 36, result has 23.4 percent of original size [2021-11-20 07:14:00,154 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 3 case distinctions, treesize of input 30 treesize of output 35 [2021-11-20 07:14:00,164 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-20 07:14:00,164 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 29 treesize of output 25 [2021-11-20 07:14:00,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:00,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:02,553 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:14:02,553 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 34 treesize of output 33 [2021-11-20 07:14:02,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:02,726 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:14:02,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1423369954] [2021-11-20 07:14:02,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1423369954] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:02,727 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:02,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:14:02,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525792832] [2021-11-20 07:14:02,727 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:02,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:14:02,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:14:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:14:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 07:14:02,729 INFO L87 Difference]: Start difference. First operand 63 states and 63 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-11-20 07:14:02,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:02,743 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-11-20 07:14:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:14:02,744 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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 5 [2021-11-20 07:14:02,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:02,747 INFO L225 Difference]: With dead ends: 62 [2021-11-20 07:14:02,749 INFO L226 Difference]: Without dead ends: 62 [2021-11-20 07:14:02,750 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=13, Invalid=16, Unknown=1, NotChecked=0, Total=30 [2021-11-20 07:14:02,752 INFO L933 BasicCegarLoop]: 59 mSDtfsCounter, 0 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:02,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 138 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 47 Unchecked, 0.0s Time] [2021-11-20 07:14:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-20 07:14:02,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-11-20 07:14:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 33 states have (on average 1.878787878787879) internal successors, (62), 61 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) [2021-11-20 07:14:02,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-11-20 07:14:02,772 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 5 [2021-11-20 07:14:02,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:02,772 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-11-20 07:14:02,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 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) [2021-11-20 07:14:02,773 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-11-20 07:14:02,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-20 07:14:02,773 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:02,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:02,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:02,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:14:02,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:14:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:02,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1803024996, now seen corresponding path program 1 times [2021-11-20 07:14:02,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:14:02,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1037677922] [2021-11-20 07:14:02,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:02,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:14:03,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:14:03,001 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:14:03,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 07:14:03,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:03,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-20 07:14:03,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:03,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:03,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:03,261 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 22 treesize of output 18 [2021-11-20 07:14:03,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:03,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:14:03,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1037677922] [2021-11-20 07:14:03,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1037677922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:03,386 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:03,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:14:03,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640515129] [2021-11-20 07:14:03,386 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:03,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:14:03,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:14:03,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:14:03,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:14:03,388 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2021-11-20 07:14:03,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:03,600 INFO L93 Difference]: Finished difference Result 60 states and 60 transitions. [2021-11-20 07:14:03,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:14:03,601 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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 7 [2021-11-20 07:14:03,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:03,602 INFO L225 Difference]: With dead ends: 60 [2021-11-20 07:14:03,603 INFO L226 Difference]: Without dead ends: 60 [2021-11-20 07:14:03,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:14:03,604 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 163 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:03,604 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 36 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:14:03,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-20 07:14:03,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2021-11-20 07:14:03,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 33 states have (on average 1.8181818181818181) internal successors, (60), 59 states have internal predecessors, (60), 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) [2021-11-20 07:14:03,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-11-20 07:14:03,610 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 7 [2021-11-20 07:14:03,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:03,611 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-11-20 07:14:03,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 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) [2021-11-20 07:14:03,611 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-11-20 07:14:03,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 07:14:03,612 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:03,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:03,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:03,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:14:03,823 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:14:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:03,823 INFO L85 PathProgramCache]: Analyzing trace with hash 59199982, now seen corresponding path program 1 times [2021-11-20 07:14:03,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:14:03,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734811385] [2021-11-20 07:14:03,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:03,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:14:03,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:14:03,825 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:14:03,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 07:14:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:03,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 07:14:03,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:03,957 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 07:14:03,957 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 1 case distinctions, treesize of input 19 treesize of output 23 [2021-11-20 07:14:03,995 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-20 07:14:03,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 23 treesize of output 28 [2021-11-20 07:14:04,069 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 11 treesize of output 7 [2021-11-20 07:14:04,077 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 25 treesize of output 21 [2021-11-20 07:14:04,139 INFO L354 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2021-11-20 07:14:04,140 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 20 treesize of output 20 [2021-11-20 07:14:04,154 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 16 treesize of output 18 [2021-11-20 07:14:04,241 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 07:14:04,241 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 31 [2021-11-20 07:14:04,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:14:04,265 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 21 treesize of output 20 [2021-11-20 07:14:04,363 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:14:04,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 56 treesize of output 32 [2021-11-20 07:14:04,375 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 29 treesize of output 21 [2021-11-20 07:14:04,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:04,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:07,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:07,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:14:07,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734811385] [2021-11-20 07:14:07,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734811385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:07,635 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:07,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 10 [2021-11-20 07:14:07,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150252492] [2021-11-20 07:14:07,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:07,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 07:14:07,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:14:07,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 07:14:07,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=82, Unknown=1, NotChecked=0, Total=110 [2021-11-20 07:14:07,638 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-11-20 07:14:08,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:08,176 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-11-20 07:14:08,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 07:14:08,176 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 8 [2021-11-20 07:14:08,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:08,177 INFO L225 Difference]: With dead ends: 59 [2021-11-20 07:14:08,177 INFO L226 Difference]: Without dead ends: 59 [2021-11-20 07:14:08,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=41, Invalid=114, Unknown=1, NotChecked=0, Total=156 [2021-11-20 07:14:08,179 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 8 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 84 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:08,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 142 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 84 Unchecked, 0.4s Time] [2021-11-20 07:14:08,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-20 07:14:08,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-11-20 07:14:08,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 58 states have internal predecessors, (59), 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) [2021-11-20 07:14:08,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-11-20 07:14:08,185 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 8 [2021-11-20 07:14:08,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:08,186 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-11-20 07:14:08,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-11-20 07:14:08,186 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-11-20 07:14:08,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-20 07:14:08,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:08,187 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:08,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 07:14:08,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:14:08,396 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:14:08,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:08,397 INFO L85 PathProgramCache]: Analyzing trace with hash 59199981, now seen corresponding path program 1 times [2021-11-20 07:14:08,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:14:08,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [665521763] [2021-11-20 07:14:08,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:08,397 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:14:08,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:14:08,398 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:14:08,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 07:14:08,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:08,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:14:08,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:08,507 INFO L354 Elim1Store]: treesize reduction 31, result has 43.6 percent of original size [2021-11-20 07:14:08,507 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 2 case distinctions, treesize of input 16 treesize of output 33 [2021-11-20 07:14:08,684 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 20 treesize of output 16 [2021-11-20 07:14:08,745 INFO L354 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2021-11-20 07:14:08,745 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 20 treesize of output 25 [2021-11-20 07:14:08,840 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 07:14:08,841 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2021-11-20 07:14:08,933 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:14:08,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 37 treesize of output 23 [2021-11-20 07:14:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:08,976 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:09,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:09,081 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:14:09,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [665521763] [2021-11-20 07:14:09,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [665521763] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:09,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:09,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 7 [2021-11-20 07:14:09,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837249746] [2021-11-20 07:14:09,082 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:09,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 07:14:09,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:14:09,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 07:14:09,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:14:09,083 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2021-11-20 07:14:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:09,633 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2021-11-20 07:14:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:14:09,633 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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 8 [2021-11-20 07:14:09,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:09,634 INFO L225 Difference]: With dead ends: 58 [2021-11-20 07:14:09,634 INFO L226 Difference]: Without dead ends: 58 [2021-11-20 07:14:09,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-11-20 07:14:09,635 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 50 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:09,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 118 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 07:14:09,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-11-20 07:14:09,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-11-20 07:14:09,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 57 states have internal predecessors, (58), 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) [2021-11-20 07:14:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions. [2021-11-20 07:14:09,640 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 8 [2021-11-20 07:14:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:09,640 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions. [2021-11-20 07:14:09,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 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) [2021-11-20 07:14:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions. [2021-11-20 07:14:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:14:09,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:09,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:09,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:09,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:14:09,842 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:14:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937559, now seen corresponding path program 1 times [2021-11-20 07:14:09,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:14:09,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025412630] [2021-11-20 07:14:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:09,843 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:14:09,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:14:09,844 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:14:09,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 07:14:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:09,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 07:14:09,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:09,946 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 11 treesize of output 9 [2021-11-20 07:14:09,963 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 16 treesize of output 12 [2021-11-20 07:14:09,983 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 [2021-11-20 07:14:10,039 INFO L354 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2021-11-20 07:14:10,040 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2021-11-20 07:14:10,294 INFO L354 Elim1Store]: treesize reduction 642, result has 2.6 percent of original size [2021-11-20 07:14:10,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 95 treesize of output 47 [2021-11-20 07:14:10,346 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-20 07:14:10,346 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 32 treesize of output 16 [2021-11-20 07:14:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:10,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:25,118 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 220 treesize of output 151 [2021-11-20 07:14:33,368 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 1628 treesize of output 1504 [2021-11-20 07:14:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:34,298 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:14:34,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025412630] [2021-11-20 07:14:34,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025412630] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:14:34,299 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:14:34,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 12 [2021-11-20 07:14:34,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414658860] [2021-11-20 07:14:34,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:14:34,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-20 07:14:34,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:14:34,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-20 07:14:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=110, Unknown=7, NotChecked=0, Total=156 [2021-11-20 07:14:34,302 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-11-20 07:14:36,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:14:36,571 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-11-20 07:14:36,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 07:14:36,572 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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 [2021-11-20 07:14:36,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:14:36,573 INFO L225 Difference]: With dead ends: 57 [2021-11-20 07:14:36,573 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 07:14:36,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 25.0s TimeCoverageRelationStatistics Valid=52, Invalid=150, Unknown=8, NotChecked=0, Total=210 [2021-11-20 07:14:36,574 INFO L933 BasicCegarLoop]: 50 mSDtfsCounter, 16 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 100 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:14:36,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 246 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 100 Unchecked, 0.2s Time] [2021-11-20 07:14:36,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 07:14:36,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-11-20 07:14:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 33 states have (on average 1.7272727272727273) internal successors, (57), 56 states have internal predecessors, (57), 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) [2021-11-20 07:14:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-11-20 07:14:36,579 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 11 [2021-11-20 07:14:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:14:36,580 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-11-20 07:14:36,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 13 states have internal predecessors, (19), 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) [2021-11-20 07:14:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-11-20 07:14:36,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-20 07:14:36,581 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:14:36,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:14:36,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-20 07:14:36,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:14:36,793 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:14:36,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:14:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1604937558, now seen corresponding path program 1 times [2021-11-20 07:14:36,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:14:36,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2103590388] [2021-11-20 07:14:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:14:36,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:14:36,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:14:36,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:14:36,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 07:14:36,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:14:36,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 07:14:36,872 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:14:36,886 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 13 treesize of output 11 [2021-11-20 07:14:36,924 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 16 treesize of output 12 [2021-11-20 07:14:36,966 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 [2021-11-20 07:14:37,019 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 [2021-11-20 07:14:37,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:14:37,034 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 27 treesize of output 26 [2021-11-20 07:14:37,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:14:37,407 INFO L354 Elim1Store]: treesize reduction 632, result has 2.6 percent of original size [2021-11-20 07:14:37,407 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 6 case distinctions, treesize of input 173 treesize of output 101 [2021-11-20 07:14:37,470 INFO L354 Elim1Store]: treesize reduction 492, result has 1.8 percent of original size [2021-11-20 07:14:37,471 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 1 new quantified variables, introduced 4 case distinctions, treesize of input 101 treesize of output 32 [2021-11-20 07:14:37,524 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:14:37,524 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 27 [2021-11-20 07:14:37,529 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 [2021-11-20 07:14:37,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:14:37,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:14:47,510 WARN L227 SmtUtils]: Spent 5.71s on a formula simplification that was a NOOP. DAG size: 46 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 07:16:12,866 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 215 treesize of output 146 [2021-11-20 07:16:17,672 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 16 treesize of output 14 [2021-11-20 07:16:17,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:17,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:17,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2103590388] [2021-11-20 07:16:17,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2103590388] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:17,734 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:17,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-11-20 07:16:17,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850008071] [2021-11-20 07:16:17,735 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:17,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-20 07:16:17,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:17,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-20 07:16:17,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=160, Unknown=4, NotChecked=0, Total=210 [2021-11-20 07:16:17,736 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-20 07:16:18,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:18,815 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2021-11-20 07:16:18,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:16:18,816 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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 [2021-11-20 07:16:18,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:18,817 INFO L225 Difference]: With dead ends: 56 [2021-11-20 07:16:18,817 INFO L226 Difference]: Without dead ends: 56 [2021-11-20 07:16:18,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=67, Invalid=235, Unknown=4, NotChecked=0, Total=306 [2021-11-20 07:16:18,818 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 69 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:18,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 277 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 77 Invalid, 0 Unknown, 69 Unchecked, 0.5s Time] [2021-11-20 07:16:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-20 07:16:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-11-20 07:16:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 33 states have (on average 1.696969696969697) internal successors, (56), 55 states have internal predecessors, (56), 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) [2021-11-20 07:16:18,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2021-11-20 07:16:18,824 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 11 [2021-11-20 07:16:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:18,825 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2021-11-20 07:16:18,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-11-20 07:16:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2021-11-20 07:16:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:16:18,826 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:18,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:18,840 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:19,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:19,033 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:16:19,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:19,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1118886990, now seen corresponding path program 1 times [2021-11-20 07:16:19,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:19,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [805523385] [2021-11-20 07:16:19,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:19,035 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:19,036 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:19,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 07:16:19,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:19,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 07:16:19,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:19,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:19,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:19,218 INFO L354 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2021-11-20 07:16:19,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 17 [2021-11-20 07:16:19,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:19,251 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:19,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [805523385] [2021-11-20 07:16:19,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [805523385] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:19,251 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:19,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 07:16:19,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595332269] [2021-11-20 07:16:19,252 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:19,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:16:19,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:19,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:16:19,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:16:19,253 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-20 07:16:19,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:19,426 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-20 07:16:19,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:16:19,427 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2021-11-20 07:16:19,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:19,428 INFO L225 Difference]: With dead ends: 54 [2021-11-20 07:16:19,428 INFO L226 Difference]: Without dead ends: 54 [2021-11-20 07:16:19,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:16:19,429 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 76 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:19,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 32 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:16:19,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-20 07:16:19,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-11-20 07:16:19,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 33 states have (on average 1.6363636363636365) internal successors, (54), 53 states have internal predecessors, (54), 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) [2021-11-20 07:16:19,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-11-20 07:16:19,435 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 14 [2021-11-20 07:16:19,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:19,435 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-11-20 07:16:19,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-11-20 07:16:19,436 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-11-20 07:16:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-20 07:16:19,436 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:19,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:19,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-20 07:16:19,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:19,650 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:16:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:19,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1118886989, now seen corresponding path program 1 times [2021-11-20 07:16:19,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:19,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464287694] [2021-11-20 07:16:19,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:19,651 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:19,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:19,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:19,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 07:16:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:19,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 07:16:19,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:19,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:20,075 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:16:20,075 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 22 treesize of output 26 [2021-11-20 07:16:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:20,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464287694] [2021-11-20 07:16:20,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464287694] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:20,272 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:20,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-11-20 07:16:20,272 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926265460] [2021-11-20 07:16:20,272 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:20,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:16:20,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:20,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:16:20,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:16:20,274 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-20 07:16:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:20,489 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-11-20 07:16:20,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 07:16:20,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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 14 [2021-11-20 07:16:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:20,490 INFO L225 Difference]: With dead ends: 52 [2021-11-20 07:16:20,491 INFO L226 Difference]: Without dead ends: 52 [2021-11-20 07:16:20,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:16:20,492 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 127 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:20,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 33 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:16:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-20 07:16:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-11-20 07:16:20,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 51 states have internal predecessors, (52), 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) [2021-11-20 07:16:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-20 07:16:20,497 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 14 [2021-11-20 07:16:20,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:20,497 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-20 07:16:20,498 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 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) [2021-11-20 07:16:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-20 07:16:20,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:16:20,498 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:20,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:20,511 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:20,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:20,705 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:16:20,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:20,705 INFO L85 PathProgramCache]: Analyzing trace with hash 478865263, now seen corresponding path program 1 times [2021-11-20 07:16:20,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:20,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399169299] [2021-11-20 07:16:20,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:20,706 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:20,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:20,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:20,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 07:16:20,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:20,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:16:20,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:20,841 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 [2021-11-20 07:16:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:20,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:20,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:20,879 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:20,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399169299] [2021-11-20 07:16:20,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399169299] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:20,879 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:20,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-20 07:16:20,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806651508] [2021-11-20 07:16:20,880 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:20,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:16:20,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:16:20,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:16:20,881 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 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) [2021-11-20 07:16:21,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:21,015 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2021-11-20 07:16:21,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:16:21,016 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 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 17 [2021-11-20 07:16:21,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:21,016 INFO L225 Difference]: With dead ends: 48 [2021-11-20 07:16:21,017 INFO L226 Difference]: Without dead ends: 48 [2021-11-20 07:16:21,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 07:16:21,018 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 22 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:21,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 41 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 07:16:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-20 07:16:21,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-11-20 07:16:21,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.4545454545454546) internal successors, (48), 47 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) [2021-11-20 07:16:21,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-11-20 07:16:21,022 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 17 [2021-11-20 07:16:21,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:21,022 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-11-20 07:16:21,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 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) [2021-11-20 07:16:21,023 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-11-20 07:16:21,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-20 07:16:21,024 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:21,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:16:21,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-20 07:16:21,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:21,225 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:16:21,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash 478865264, now seen corresponding path program 1 times [2021-11-20 07:16:21,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:21,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23339540] [2021-11-20 07:16:21,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:21,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:21,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:21,228 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:21,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 07:16:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:21,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-20 07:16:21,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:21,348 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 [2021-11-20 07:16:21,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:21,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:16:21,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:21,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 07:16:21,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23339540] [2021-11-20 07:16:21,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23339540] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 07:16:21,433 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:16:21,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-11-20 07:16:21,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339482624] [2021-11-20 07:16:21,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 07:16:21,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 07:16:21,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 07:16:21,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 07:16:21,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:16:21,434 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-20 07:16:21,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:16:21,625 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-11-20 07:16:21,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:16:21,626 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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 17 [2021-11-20 07:16:21,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:16:21,626 INFO L225 Difference]: With dead ends: 44 [2021-11-20 07:16:21,626 INFO L226 Difference]: Without dead ends: 44 [2021-11-20 07:16:21,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-20 07:16:21,627 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 24 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:16:21,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 46 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 07:16:21,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-11-20 07:16:21,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2021-11-20 07:16:21,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 33 states have (on average 1.3333333333333333) internal successors, (44), 43 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) [2021-11-20 07:16:21,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2021-11-20 07:16:21,632 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 17 [2021-11-20 07:16:21,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:16:21,632 INFO L470 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2021-11-20 07:16:21,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 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) [2021-11-20 07:16:21,633 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2021-11-20 07:16:21,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-20 07:16:21,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:16:21,634 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] [2021-11-20 07:16:21,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-20 07:16:21,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 07:16:21,837 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 31 more)] === [2021-11-20 07:16:21,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:16:21,838 INFO L85 PathProgramCache]: Analyzing trace with hash -925217004, now seen corresponding path program 1 times [2021-11-20 07:16:21,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 07:16:21,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239997798] [2021-11-20 07:16:21,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:16:21,838 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 07:16:21,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 07:16:21,840 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 07:16:21,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cff707b-1ab9-4413-859a-e7b5f6b845fd/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 07:16:22,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:16:22,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-20 07:16:22,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:16:22,061 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 12 treesize of output 10 [2021-11-20 07:16:22,101 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 16 treesize of output 12 [2021-11-20 07:16:22,173 INFO L354 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2021-11-20 07:16:22,174 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 28 [2021-11-20 07:16:22,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:16:22,254 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 34 treesize of output 33 [2021-11-20 07:16:22,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-20 07:16:22,660 INFO L354 Elim1Store]: treesize reduction 632, result has 2.6 percent of original size [2021-11-20 07:16:22,661 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 5 case distinctions, treesize of input 117 treesize of output 59 [2021-11-20 07:16:23,040 INFO L354 Elim1Store]: treesize reduction 642, result has 2.6 percent of original size [2021-11-20 07:16:23,041 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 61 [2021-11-20 07:16:24,404 INFO L354 Elim1Store]: treesize reduction 119, result has 32.4 percent of original size [2021-11-20 07:16:24,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 83 treesize of output 120 [2021-11-20 07:16:24,869 INFO L354 Elim1Store]: treesize reduction 64, result has 21.0 percent of original size [2021-11-20 07:16:24,869 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 118 treesize of output 96 [2021-11-20 07:16:25,396 INFO L354 Elim1Store]: treesize reduction 118, result has 16.9 percent of original size [2021-11-20 07:16:25,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 6 case distinctions, treesize of input 128 treesize of output 109 [2021-11-20 07:16:26,171 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-20 07:16:26,171 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 129 treesize of output 87 [2021-11-20 07:16:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:16:26,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 07:18:08,799 WARN L227 SmtUtils]: Spent 6.25s on a formula simplification that was a NOOP. DAG size: 8 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-20 07:18:08,800 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 07:18:09,206 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 5446638079155694 treesize of output 5023995975326176