./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.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_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/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_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/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_bc24d859-80a5-4b69-9110-0df8057e643a/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 4dc383db2a89e53bad8cae6a138d4c7c7f853888 .......................................................................................................................................................................................................................................................................................................................................................... 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 01:05:58,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:05:58,720 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:05:58,769 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:05:58,770 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:05:58,776 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:05:58,778 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:05:58,782 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:05:58,784 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:05:58,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:05:58,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:05:58,795 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:05:58,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:05:58,798 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:05:58,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:05:58,807 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:05:58,808 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:05:58,809 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:05:58,811 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:05:58,814 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:05:58,816 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:05:58,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:05:58,823 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:05:58,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:05:58,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:05:58,833 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:05:58,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:05:58,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:05:58,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:05:58,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:05:58,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:05:58,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:05:58,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:05:58,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:05:58,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:05:58,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:05:58,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:05:58,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:05:58,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:05:58,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:05:58,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:05:58,848 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:05:58,896 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:05:58,896 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:05:58,897 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:05:58,897 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:05:58,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:05:58,899 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:05:58,899 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:05:58,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:05:58,899 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:05:58,899 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:05:58,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:05:58,901 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:05:58,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:05:58,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:05:58,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:05:58,901 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:05:58,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:05:58,902 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:05:58,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:05:58,902 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:05:58,902 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:05:58,903 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:05:58,903 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:05:58,903 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:05:58,903 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:05:58,903 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:05:58,904 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:05:58,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:05:58,904 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:05:58,905 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:05:58,906 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_bc24d859-80a5-4b69-9110-0df8057e643a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4dc383db2a89e53bad8cae6a138d4c7c7f853888 [2021-10-13 01:05:59,242 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:05:59,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:05:59,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:05:59,277 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:05:59,277 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:05:59,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2021-10-13 01:05:59,351 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/data/062cdd5b6/cd29424fef2a45f8bad7af15a570cd27/FLAGcb58b4c48 [2021-10-13 01:05:59,862 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:05:59,863 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c [2021-10-13 01:05:59,874 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/data/062cdd5b6/cd29424fef2a45f8bad7af15a570cd27/FLAGcb58b4c48 [2021-10-13 01:06:00,228 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/data/062cdd5b6/cd29424fef2a45f8bad7af15a570cd27 [2021-10-13 01:06:00,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:06:00,231 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:06:00,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:06:00,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:06:00,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:06:00,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,239 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78304242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00, skipping insertion in model container [2021-10-13 01:06:00,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,247 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:06:00,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:06:00,442 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_bc24d859-80a5-4b69-9110-0df8057e643a/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2021-10-13 01:06:00,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:06:00,476 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:06:00,491 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_bc24d859-80a5-4b69-9110-0df8057e643a/sv-benchmarks/c/nla-digbench-scaling/geo1-u_valuebound5.c[555,568] [2021-10-13 01:06:00,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:06:00,529 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:06:00,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00 WrapperNode [2021-10-13 01:06:00,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:06:00,535 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:06:00,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:06:00,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:06:00,543 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,552 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:06:00,580 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:06:00,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:06:00,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:06:00,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,602 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:06:00,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:06:00,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:06:00,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:06:00,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (1/1) ... [2021-10-13 01:06:00,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:06:00,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:00,657 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:06:00,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:06:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:06:00,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:06:00,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:06:00,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:06:00,953 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:06:00,953 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2021-10-13 01:06:00,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:00 BoogieIcfgContainer [2021-10-13 01:06:00,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:06:00,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:06:00,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:06:00,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:06:00,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:06:00" (1/3) ... [2021-10-13 01:06:00,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2910db60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:00, skipping insertion in model container [2021-10-13 01:06:00,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:06:00" (2/3) ... [2021-10-13 01:06:00,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2910db60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:06:00, skipping insertion in model container [2021-10-13 01:06:00,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:00" (3/3) ... [2021-10-13 01:06:00,978 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound5.c [2021-10-13 01:06:00,983 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:06:00,983 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 01:06:01,028 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:06:01,035 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 01:06:01,035 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 01:06:01,073 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:01,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:06:01,079 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:01,079 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:01,080 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:06:01,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:01,088 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2021-10-13 01:06:01,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:01,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147108355] [2021-10-13 01:06:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:01,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:01,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:01,301 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 01:06:01,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:01,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147108355] [2021-10-13 01:06:01,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147108355] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:01,305 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:01,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:06:01,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203957804] [2021-10-13 01:06:01,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:06:01,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:06:01,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:06:01,349 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:01,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:01,364 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-10-13 01:06:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:06:01,365 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 01:06:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:01,373 INFO L225 Difference]: With dead ends: 35 [2021-10-13 01:06:01,374 INFO L226 Difference]: Without dead ends: 15 [2021-10-13 01:06:01,377 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 01:06:01,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-13 01:06:01,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-13 01:06:01,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-13 01:06:01,409 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2021-10-13 01:06:01,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:01,410 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-13 01:06:01,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:01,411 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-13 01:06:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 01:06:01,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:01,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:01,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:06:01,413 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:06:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:01,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2021-10-13 01:06:01,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:01,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732222641] [2021-10-13 01:06:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:01,419 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:01,461 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:06:01,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333543615] [2021-10-13 01:06:01,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:01,462 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:01,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:01,464 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:01,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 01:06:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:06:01,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 01:06:01,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 01:06:01,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:06:01,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:06:01,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732222641] [2021-10-13 01:06:01,682 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 01:06:01,682 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333543615] [2021-10-13 01:06:01,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333543615] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:06:01,683 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:06:01,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:06:01,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865905748] [2021-10-13 01:06:01,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:06:01,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:06:01,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:06:01,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:06:01,686 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:01,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:06:01,724 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-10-13 01:06:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-13 01:06:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-13 01:06:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:06:01,725 INFO L225 Difference]: With dead ends: 22 [2021-10-13 01:06:01,725 INFO L226 Difference]: Without dead ends: 20 [2021-10-13 01:06:01,726 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:06:01,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-13 01:06:01,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-10-13 01:06:01,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 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 01:06:01,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-13 01:06:01,737 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2021-10-13 01:06:01,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:06:01,738 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-13 01:06:01,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 01:06:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-13 01:06:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-13 01:06:01,739 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:06:01,739 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:06:01,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:01,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:01,960 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:06:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:06:01,960 INFO L82 PathProgramCache]: Analyzing trace with hash 636924791, now seen corresponding path program 1 times [2021-10-13 01:06:01,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:06:01,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356329699] [2021-10-13 01:06:01,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:01,961 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:06:01,981 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 01:06:01,982 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [901168536] [2021-10-13 01:06:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:06:01,986 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 01:06:01,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:06:01,988 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 01:06:01,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 01:06:02,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:06:02,094 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-13 01:06:02,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-13 01:06:02,127 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-13 01:06:02,127 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-13 01:06:02,128 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:06:02,130 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:06:02,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 01:06:02,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-13 01:06:02,358 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:06:02,380 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:06:02 BoogieIcfgContainer [2021-10-13 01:06:02,381 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:06:02,381 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:06:02,381 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:06:02,382 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:06:02,382 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:06:00" (3/4) ... [2021-10-13 01:06:02,384 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-13 01:06:02,444 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:06:02,448 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:06:02,449 INFO L168 Benchmark]: Toolchain (without parser) took 2217.83 ms. Allocated memory is still 115.3 MB. Free memory was 76.7 MB in the beginning and 84.9 MB in the end (delta: -8.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:06:02,450 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 115.3 MB. Free memory was 93.0 MB in the beginning and 92.9 MB in the end (delta: 73.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:06:02,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.13 ms. Allocated memory is still 115.3 MB. Free memory was 76.5 MB in the beginning and 90.6 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:06:02,455 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 88.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:06:02,456 INFO L168 Benchmark]: Boogie Preprocessor took 43.58 ms. Allocated memory is still 115.3 MB. Free memory was 88.8 MB in the beginning and 87.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:06:02,456 INFO L168 Benchmark]: RCFGBuilder took 330.98 ms. Allocated memory is still 115.3 MB. Free memory was 87.8 MB in the beginning and 78.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:06:02,457 INFO L168 Benchmark]: TraceAbstraction took 1424.50 ms. Allocated memory is still 115.3 MB. Free memory was 77.9 MB in the beginning and 87.0 MB in the end (delta: -9.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:06:02,457 INFO L168 Benchmark]: Witness Printer took 66.67 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 84.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:06:02,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 115.3 MB. Free memory was 93.0 MB in the beginning and 92.9 MB in the end (delta: 73.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.13 ms. Allocated memory is still 115.3 MB. Free memory was 76.5 MB in the beginning and 90.6 MB in the end (delta: -14.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.82 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 88.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.58 ms. Allocated memory is still 115.3 MB. Free memory was 88.8 MB in the beginning and 87.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 330.98 ms. Allocated memory is still 115.3 MB. Free memory was 87.8 MB in the beginning and 78.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1424.50 ms. Allocated memory is still 115.3 MB. Free memory was 77.9 MB in the beginning and 87.0 MB in the end (delta: -9.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 66.67 ms. Allocated memory is still 115.3 MB. Free memory was 87.0 MB in the beginning and 84.9 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: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L27] k = __VERIFIER_nondet_uint() [L13] COND FALSE !(!cond) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L16] COND FALSE !(!(cond)) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L16] COND TRUE !(cond) [L18] reach_error() - UnprovableResult [Line: 18]: 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1329.6ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 23.4ms, AutomataDifference: 92.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 21.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 31 SDtfs, 5 SDslu, 20 SDs, 0 SdLazy, 13 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 27.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 34.7ms SsaConstructionTime, 116.8ms SatisfiabilityAnalysisTime, 213.0ms InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 26 SizeOfPredicates, 4 NumberOfNonLiveVariables, 58 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 01:06:02,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc24d859-80a5-4b69-9110-0df8057e643a/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...