./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d ................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:01:34,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:01:34,754 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:01:34,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:01:34,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:01:34,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:01:34,802 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:01:34,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:01:34,808 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:01:34,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:01:34,812 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:01:34,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:01:34,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:01:34,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:01:34,829 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:01:34,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:01:34,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:01:34,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:01:34,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:01:34,847 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:01:34,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:01:34,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:01:34,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:01:34,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:01:34,862 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:01:34,863 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:01:34,864 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:01:34,865 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:01:34,866 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:01:34,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:01:34,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:01:34,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:01:34,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:01:34,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:01:34,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:01:34,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:01:34,875 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:01:34,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:01:34,876 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:01:34,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:01:34,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:01:34,880 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:01:34,918 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:01:34,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:01:34,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:01:34,925 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:01:34,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:01:34,927 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:01:34,927 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:01:34,928 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:01:34,928 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:01:34,929 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:01:34,929 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:01:34,929 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:01:34,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:01:34,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:01:34,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:01:34,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:01:34,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:01:34,937 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:01:34,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:01:34,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:01:34,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:01:34,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:01:34,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:34,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:01:34,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:01:34,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:01:34,940 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:01:34,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:01:34,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:01:34,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:01:34,944 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_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d [2021-10-13 01:01:35,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:01:35,297 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:01:35,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:01:35,301 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:01:35,302 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:01:35,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-10-13 01:01:35,376 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/560285fe5/2da28e9c4ca24760b10819a042a65bc6/FLAG5014a1e82 [2021-10-13 01:01:35,880 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:01:35,881 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-10-13 01:01:35,888 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/560285fe5/2da28e9c4ca24760b10819a042a65bc6/FLAG5014a1e82 [2021-10-13 01:01:36,234 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/560285fe5/2da28e9c4ca24760b10819a042a65bc6 [2021-10-13 01:01:36,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:01:36,239 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:01:36,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:36,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:01:36,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:01:36,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d289a7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36, skipping insertion in model container [2021-10-13 01:01:36,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:01:36,297 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:01:36,497 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c[709,722] [2021-10-13 01:01:36,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:36,560 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:01:36,573 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c[709,722] [2021-10-13 01:01:36,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:36,602 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:01:36,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36 WrapperNode [2021-10-13 01:01:36,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:36,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:01:36,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:01:36,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:01:36,614 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:01:36,652 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:01:36,652 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:01:36,653 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:01:36,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:01:36,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:01:36,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:01:36,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:01:36,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (1/1) ... [2021-10-13 01:01:36,703 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:36,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:01:36,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:01:36,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:01:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:01:36,819 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:01:36,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:01:36,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:01:37,140 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:01:37,140 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 01:01:37,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:37 BoogieIcfgContainer [2021-10-13 01:01:37,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:01:37,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:01:37,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:01:37,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:01:37,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:01:36" (1/3) ... [2021-10-13 01:01:37,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e8933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:37, skipping insertion in model container [2021-10-13 01:01:37,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:36" (2/3) ... [2021-10-13 01:01:37,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607e8933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:37, skipping insertion in model container [2021-10-13 01:01:37,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:37" (3/3) ... [2021-10-13 01:01:37,154 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound50.c [2021-10-13 01:01:37,160 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:01:37,161 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 01:01:37,230 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:01:37,249 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-13 01:01:37,249 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 01:01:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:01:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:01:37,290 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:37,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:01:37,291 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:01:37,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:37,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-13 01:01:37,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:01:37,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143943001] [2021-10-13 01:01:37,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:01:37,317 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:01:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:01:37,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:01:37,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:01:37,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143943001] [2021-10-13 01:01:37,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143943001] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:01:37,483 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:01:37,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:01:37,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302062921] [2021-10-13 01:01:37,491 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:01:37,491 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:01:37,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:01:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:01:37,508 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:01:37,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:01:37,528 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-13 01:01:37,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:01:37,530 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 01:01:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:01:37,540 INFO L225 Difference]: With dead ends: 63 [2021-10-13 01:01:37,540 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 01:01:37,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:01:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 01:01:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 01:01:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 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) [2021-10-13 01:01:37,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-13 01:01:37,579 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-13 01:01:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:01:37,580 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-13 01:01:37,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:01:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-13 01:01:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:01:37,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:37,582 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:01:37,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:01:37,582 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:01:37,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:37,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-13 01:01:37,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:01:37,584 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060614333] [2021-10-13 01:01:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:01:37,585 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:01:37,618 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:01:37,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1709065911] [2021-10-13 01:01:37,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:01:37,620 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:01:37,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:01:37,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:01:37,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:01:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:01:37,711 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:01:37,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:01:37,766 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:01:37,770 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:01:37,772 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:01:37,775 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:01:37,777 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:01:37,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:01:37,778 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:01:37,779 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:01:37,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:01:37,996 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:01:38,002 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:01:38,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:01:38 BoogieIcfgContainer [2021-10-13 01:01:38,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:01:38,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:01:38,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:01:38,028 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:01:38,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:37" (3/4) ... [2021-10-13 01:01:38,032 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-13 01:01:38,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:01:38,035 INFO L168 Benchmark]: Toolchain (without parser) took 1794.24 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 55.4 MB in the beginning and 93.5 MB in the end (delta: -38.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:01:38,035 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:01:38,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.53 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 55.2 MB in the beginning and 98.9 MB in the end (delta: -43.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. [2021-10-13 01:01:38,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.91 ms. Allocated memory is still 123.7 MB. Free memory was 98.9 MB in the beginning and 97.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:01:38,039 INFO L168 Benchmark]: Boogie Preprocessor took 32.62 ms. Allocated memory is still 123.7 MB. Free memory was 97.1 MB in the beginning and 96.1 MB in the end (delta: 982.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:01:38,040 INFO L168 Benchmark]: RCFGBuilder took 457.17 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 85.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:01:38,040 INFO L168 Benchmark]: TraceAbstraction took 881.61 ms. Allocated memory is still 123.7 MB. Free memory was 84.9 MB in the beginning and 94.0 MB in the end (delta: -9.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:01:38,041 INFO L168 Benchmark]: Witness Printer took 5.21 ms. Allocated memory is still 123.7 MB. Free memory is still 94.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:01:38,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 92.3 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.53 ms. Allocated memory was 92.3 MB in the beginning and 123.7 MB in the end (delta: 31.5 MB). Free memory was 55.2 MB in the beginning and 98.9 MB in the end (delta: -43.7 MB). Peak memory consumption was 7.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.91 ms. Allocated memory is still 123.7 MB. Free memory was 98.9 MB in the beginning and 97.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.62 ms. Allocated memory is still 123.7 MB. Free memory was 97.1 MB in the beginning and 96.1 MB in the end (delta: 982.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 457.17 ms. Allocated memory is still 123.7 MB. Free memory was 95.7 MB in the beginning and 85.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 881.61 ms. Allocated memory is still 123.7 MB. Free memory was 84.9 MB in the beginning and 94.0 MB in the end (delta: -9.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.21 ms. Allocated memory is still 123.7 MB. Free memory is still 94.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 772.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 28.2ms, AutomataDifference: 51.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 33 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 20.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.4ms SsaConstructionTime, 60.2ms SatisfiabilityAnalysisTime, 51.7ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-13 01:01:38,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:01:41,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:01:41,008 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:01:41,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:01:41,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:01:41,055 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:01:41,062 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:01:41,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:01:41,072 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:01:41,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:01:41,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:01:41,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:01:41,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:01:41,087 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:01:41,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:01:41,091 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:01:41,092 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:01:41,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:01:41,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:01:41,112 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:01:41,119 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:01:41,121 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:01:41,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:01:41,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:01:41,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:01:41,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:01:41,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:01:41,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:01:41,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:01:41,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:01:41,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:01:41,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:01:41,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:01:41,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:01:41,156 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:01:41,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:01:41,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:01:41,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:01:41,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:01:41,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:01:41,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:01:41,163 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-13 01:01:41,213 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:01:41,213 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:01:41,213 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:01:41,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:01:41,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:01:41,216 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:01:41,217 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:01:41,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:01:41,217 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:01:41,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:01:41,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:01:41,219 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:01:41,220 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:01:41,220 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:01:41,220 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 01:01:41,220 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 01:01:41,220 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:01:41,221 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:01:41,221 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:01:41,221 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:01:41,221 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:01:41,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:01:41,222 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:01:41,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:41,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:01:41,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:01:41,223 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:01:41,223 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-13 01:01:41,223 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 01:01:41,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:01:41,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:01:41,224 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 01:01:41,225 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_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f8c2f09b0ca804a60fc0ab2806cac6afbdad74d [2021-10-13 01:01:41,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:01:41,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:01:41,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:01:41,727 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:01:41,728 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:01:41,729 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-10-13 01:01:41,813 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/9b9eee8d5/e27f9bc6d0ce486ba2eaf36c77eea4c2/FLAG7431c6c33 [2021-10-13 01:01:42,502 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:01:42,503 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c [2021-10-13 01:01:42,516 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/9b9eee8d5/e27f9bc6d0ce486ba2eaf36c77eea4c2/FLAG7431c6c33 [2021-10-13 01:01:42,854 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/data/9b9eee8d5/e27f9bc6d0ce486ba2eaf36c77eea4c2 [2021-10-13 01:01:42,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:01:42,860 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:01:42,876 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:42,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:01:42,880 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:01:42,881 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:42" (1/1) ... [2021-10-13 01:01:42,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff72222 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:42, skipping insertion in model container [2021-10-13 01:01:42,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:01:42" (1/1) ... [2021-10-13 01:01:42,892 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:01:42,910 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:01:43,066 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c[709,722] [2021-10-13 01:01:43,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:43,134 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:01:43,161 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/sv-benchmarks/c/nla-digbench-scaling/freire2_valuebound50.c[709,722] [2021-10-13 01:01:43,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:01:43,238 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:01:43,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43 WrapperNode [2021-10-13 01:01:43,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:01:43,240 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:01:43,241 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:01:43,241 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:01:43,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,288 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:01:43,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:01:43,322 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:01:43,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:01:43,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:01:43,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:01:43,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:01:43,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:01:43,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (1/1) ... [2021-10-13 01:01:43,416 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:01:43,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:01:43,451 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:01:43,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:01:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 01:01:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:01:43,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:01:43,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:01:54,495 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:01:54,496 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2021-10-13 01:01:54,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:54 BoogieIcfgContainer [2021-10-13 01:01:54,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:01:54,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:01:54,500 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:01:54,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:01:54,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:01:42" (1/3) ... [2021-10-13 01:01:54,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0039ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:54, skipping insertion in model container [2021-10-13 01:01:54,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:01:43" (2/3) ... [2021-10-13 01:01:54,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0039ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:01:54, skipping insertion in model container [2021-10-13 01:01:54,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:54" (3/3) ... [2021-10-13 01:01:54,508 INFO L111 eAbstractionObserver]: Analyzing ICFG freire2_valuebound50.c [2021-10-13 01:01:54,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:01:54,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-13 01:01:54,563 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:01:54,569 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=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2021-10-13 01:01:54,570 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-13 01:01:54,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:01:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:01:54,597 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:54,598 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:01:54,598 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:01:54,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:54,604 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-13 01:01:54,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:01:54,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287105934] [2021-10-13 01:01:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:01:54,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:01:54,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:01:54,630 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:01:54,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 01:01:54,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:01:54,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 01:01:54,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:01:54,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:01:54,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:01:54,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:01:54,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:01:54,975 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287105934] [2021-10-13 01:01:54,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287105934] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:01:54,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:01:54,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 01:01:54,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384925806] [2021-10-13 01:01:54,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:01:54,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:01:55,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:01:55,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:01:55,006 INFO L87 Difference]: Start difference. First operand has 33 states, 26 states have (on average 1.6153846153846154) internal successors, (42), 32 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:01:55,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:01:55,025 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2021-10-13 01:01:55,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:01:55,027 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 01:01:55,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:01:55,037 INFO L225 Difference]: With dead ends: 63 [2021-10-13 01:01:55,037 INFO L226 Difference]: Without dead ends: 29 [2021-10-13 01:01:55,040 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:01:55,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-13 01:01:55,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-13 01:01:55,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 28 states have internal predecessors, (29), 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) [2021-10-13 01:01:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-10-13 01:01:55,073 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 7 [2021-10-13 01:01:55,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:01:55,073 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-10-13 01:01:55,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:01:55,074 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-10-13 01:01:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:01:55,074 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:01:55,075 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:01:55,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-13 01:01:55,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:01:55,288 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:01:55,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:01:55,289 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-13 01:01:55,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:01:55,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874121327] [2021-10-13 01:01:55,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:01:55,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:01:55,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:01:55,292 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:01:55,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 01:01:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:01:55,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-13 01:01:55,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:01:55,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:01:55,805 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:03,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:03,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:02:03,340 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874121327] [2021-10-13 01:02:03,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874121327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:02:03,341 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:02:03,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-10-13 01:02:03,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663716833] [2021-10-13 01:02:03,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-13 01:02:03,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:02:03,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-13 01:02:03,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-13 01:02:03,345 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-10-13 01:02:27,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:02:27,619 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-13 01:02:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 01:02:27,620 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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 [2021-10-13 01:02:27,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:02:27,621 INFO L225 Difference]: With dead ends: 34 [2021-10-13 01:02:27,621 INFO L226 Difference]: Without dead ends: 32 [2021-10-13 01:02:27,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6142.6ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-13 01:02:27,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-13 01:02:27,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2021-10-13 01:02:27,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.24) internal successors, (31), 30 states have internal predecessors, (31), 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) [2021-10-13 01:02:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-10-13 01:02:27,631 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 7 [2021-10-13 01:02:27,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:02:27,632 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-10-13 01:02:27,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 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) [2021-10-13 01:02:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-10-13 01:02:27,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:02:27,633 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:02:27,633 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:02:27,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:02:27,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:02:27,843 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:02:27,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:02:27,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2021-10-13 01:02:27,848 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:02:27,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083756275] [2021-10-13 01:02:27,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:02:27,849 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:02:27,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:02:27,851 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:02:27,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 01:02:28,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:02:28,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-13 01:02:28,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:02:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:02:31,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 01:02:39,169 WARN L860 $PredicateComparison]: unable to prove that (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) is different from true [2021-10-13 01:03:07,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:03:07,771 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-13 01:03:07,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083756275] [2021-10-13 01:03:07,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083756275] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 01:03:07,772 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:03:07,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-10-13 01:03:07,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994899993] [2021-10-13 01:03:07,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-13 01:03:07,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-13 01:03:07,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-13 01:03:07,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=63, Unknown=1, NotChecked=16, Total=110 [2021-10-13 01:03:07,774 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) [2021-10-13 01:03:13,706 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32)))) (.cse1 (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv50 32))))) (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) .cse0 (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (or (and .cse0 (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv1 32)) .cse1) (and (or (not .cse1) (not .cse0)) (= c_ULTIMATE.start_assume_abort_if_not_~cond (_ bv0 32)))) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse2 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) .cse1)) is different from true [2021-10-13 01:03:16,828 WARN L860 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~r~0 (_ bv1 32)) (fp.geq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))) (= c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~x~0) (= (_ bv1 32) (bvadd (bvmul (_ bv4 32) (bvmul c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0 c_ULTIMATE.start_main_~r~0)) (bvneg (bvmul (bvmul c_ULTIMATE.start_main_~r~0 (_ bv6 32)) c_ULTIMATE.start_main_~r~0)) ((_ fp.to_sbv 32) roundTowardZero (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv4 32)))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~x~0) (fp.mul c_currentRoundingMode .cse0 c_ULTIMATE.start_main_~a~0)))) (bvmul (_ bv3 32) c_ULTIMATE.start_main_~r~0))) (= c_currentRoundingMode roundNearestTiesToEven) (fp.leq c_ULTIMATE.start_main_~a~0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv50 32)))) is different from true [2021-10-13 01:03:57,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:03:57,993 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2021-10-13 01:03:57,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-13 01:03:57,993 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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 9 [2021-10-13 01:03:57,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:03:57,994 INFO L225 Difference]: With dead ends: 36 [2021-10-13 01:03:57,994 INFO L226 Difference]: Without dead ends: 34 [2021-10-13 01:03:57,995 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 27524.4ms TimeCoverageRelationStatistics Valid=41, Invalid=78, Unknown=3, NotChecked=60, Total=182 [2021-10-13 01:03:57,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-13 01:03:58,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2021-10-13 01:03:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:03:58,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-13 01:03:58,003 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 9 [2021-10-13 01:03:58,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:03:58,004 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-13 01:03:58,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 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) [2021-10-13 01:03:58,004 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-13 01:03:58,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-13 01:03:58,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:03:58,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:03:58,032 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-13 01:03:58,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:03:58,206 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-13 01:03:58,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:03:58,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2021-10-13 01:03:58,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-13 01:03:58,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2112371491] [2021-10-13 01:03:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:03:58,209 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 01:03:58,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat [2021-10-13 01:03:58,210 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 01:03:58,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-13 01:04:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:04:00,177 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:04:44,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:04:44,880 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-13 01:04:44,881 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:04:44,882 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:04:44,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:04:44,884 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:04:44,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:04:44,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:04:44,885 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:04:44,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-13 01:04:45,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/mathsat -unsat_core_generation=3 [2021-10-13 01:04:45,094 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:04:45,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:04:45 BoogieIcfgContainer [2021-10-13 01:04:45,121 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:04:45,121 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:04:45,122 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:04:45,122 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:04:45,122 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:01:54" (3/4) ... [2021-10-13 01:04:45,125 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:04:45,197 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:04:45,200 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:04:45,202 INFO L168 Benchmark]: Toolchain (without parser) took 182341.07 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.2 MB in the beginning and 32.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 22.8 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:45,203 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:04:45,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.65 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.0 MB in the beginning and 59.8 MB in the end (delta: -23.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:45,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.11 ms. Allocated memory is still 77.6 MB. Free memory was 59.8 MB in the beginning and 58.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:04:45,205 INFO L168 Benchmark]: Boogie Preprocessor took 74.62 ms. Allocated memory is still 77.6 MB. Free memory was 58.1 MB in the beginning and 56.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:45,209 INFO L168 Benchmark]: RCFGBuilder took 11100.03 ms. Allocated memory is still 77.6 MB. Free memory was 56.6 MB in the beginning and 45.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:45,212 INFO L168 Benchmark]: TraceAbstraction took 170620.73 ms. Allocated memory is still 77.6 MB. Free memory was 44.7 MB in the beginning and 34.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:45,212 INFO L168 Benchmark]: Witness Printer took 78.54 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 32.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:04:45,216 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 58.7 MB. Free memory is still 39.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 363.65 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 36.0 MB in the beginning and 59.8 MB in the end (delta: -23.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 81.11 ms. Allocated memory is still 77.6 MB. Free memory was 59.8 MB in the beginning and 58.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.62 ms. Allocated memory is still 77.6 MB. Free memory was 58.1 MB in the beginning and 56.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 11100.03 ms. Allocated memory is still 77.6 MB. Free memory was 56.6 MB in the beginning and 45.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 170620.73 ms. Allocated memory is still 77.6 MB. Free memory was 44.7 MB in the beginning and 34.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 11.0 MB. Max. memory is 16.1 GB. * Witness Printer took 78.54 ms. Allocated memory is still 77.6 MB. Free memory was 34.7 MB in the beginning and 32.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int r; [L26] double a, x, s; [L27] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L29] x = a [L30] s = 3.25 [L31] r = 1 [L33] COND TRUE 1 [L17] COND FALSE !(!(cond)) [L17] COND FALSE !(!(cond)) [L17] COND TRUE !(cond) [L19] reach_error() - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 170529.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 74555.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 18.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 83 SDtfs, 19 SDslu, 110 SDs, 0 SdLazy, 81 SolverSat, 10 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 66849.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 33667.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred in iteration=0, InterpolantAutomatonStates: 17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 33.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.8ms SsaConstructionTime, 2938.6ms SatisfiabilityAnalysisTime, 47159.9ms InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 327 SizeOfPredicates, 11 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-13 01:04:45,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_422f1e3c-f901-4576-9c83-745571f33a4d/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...