./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0477687fecbd3170f65e2eb11926275d6b3232cae024dd47071f89d509b612eb ............................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:55:44,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:55:44,798 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:55:44,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:55:44,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:55:44,884 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:55:44,887 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:55:44,894 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:55:44,897 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:55:44,907 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:55:44,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:55:44,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:55:44,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:55:44,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:55:44,919 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:55:44,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:55:44,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:55:44,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:55:44,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:55:44,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:55:44,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:55:44,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:55:44,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:55:44,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:55:44,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:55:44,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:55:44,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:55:44,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:55:44,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:55:44,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:55:44,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:55:44,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:55:44,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:55:44,981 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:55:44,983 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:55:44,983 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:55:44,984 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:55:44,984 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:55:44,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:55:44,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:55:44,987 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:55:44,988 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:55:45,052 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:55:45,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:55:45,055 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:55:45,055 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:55:45,055 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:55:45,056 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:55:45,056 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:55:45,056 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:55:45,056 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:55:45,057 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:55:45,058 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:55:45,059 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:55:45,059 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:55:45,059 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:55:45,060 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:55:45,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:55:45,061 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:55:45,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:55:45,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:55:45,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:55:45,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:55:45,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:55:45,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:55:45,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:55:45,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:55:45,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:55:45,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:55:45,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:55:45,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:55:45,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:55:45,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:55:45,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:55:45,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:55:45,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:55:45,069 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:55:45,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:55:45,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:55:45,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:55:45,070 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:55:45,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0477687fecbd3170f65e2eb11926275d6b3232cae024dd47071f89d509b612eb [2021-10-24 10:55:45,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:55:45,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:55:45,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:55:45,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:55:45,496 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:55:45,497 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2021-10-24 10:55:45,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/data/9eb0e9900/5c7677c9827e4b1a8debc7796849baa0/FLAG112819e54 [2021-10-24 10:55:46,206 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:55:46,207 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c [2021-10-24 10:55:46,216 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/data/9eb0e9900/5c7677c9827e4b1a8debc7796849baa0/FLAG112819e54 [2021-10-24 10:55:46,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/data/9eb0e9900/5c7677c9827e4b1a8debc7796849baa0 [2021-10-24 10:55:46,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:55:46,576 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:55:46,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:55:46,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:55:46,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:55:46,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd40a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46, skipping insertion in model container [2021-10-24 10:55:46,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:55:46,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:55:46,834 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_1cdbbed6-2f17-4b32-8652-75e65240fdff/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] [2021-10-24 10:55:46,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:55:46,864 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:55:46,877 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_1cdbbed6-2f17-4b32-8652-75e65240fdff/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_valuebound2.c[546,559] [2021-10-24 10:55:46,885 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:55:46,902 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:55:46,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46 WrapperNode [2021-10-24 10:55:46,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:55:46,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:55:46,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:55:46,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:55:46,914 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,923 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,949 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:55:46,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:55:46,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:55:46,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:55:46,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,974 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,978 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:55:46,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:55:46,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:55:46,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:55:46,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (1/1) ... [2021-10-24 10:55:46,991 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:55:47,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:55:47,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:55:47,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:55:47,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:55:47,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:55:47,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:55:47,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:55:47,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:55:47,732 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-10-24 10:55:47,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:55:47 BoogieIcfgContainer [2021-10-24 10:55:47,736 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:55:47,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:55:47,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:55:47,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:55:47,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:55:46" (1/3) ... [2021-10-24 10:55:47,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61946f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:55:47, skipping insertion in model container [2021-10-24 10:55:47,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:55:46" (2/3) ... [2021-10-24 10:55:47,747 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61946f73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:55:47, skipping insertion in model container [2021-10-24 10:55:47,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:55:47" (3/3) ... [2021-10-24 10:55:47,749 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_valuebound2.c [2021-10-24 10:55:47,760 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:55:47,761 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-24 10:55:47,830 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:55:47,839 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, mAutomataTypeConcurrency=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 [2021-10-24 10:55:47,840 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-24 10:55:47,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:55:47,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-24 10:55:47,862 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:55:47,863 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-24 10:55:47,864 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-24 10:55:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:55:47,870 INFO L82 PathProgramCache]: Analyzing trace with hash 3554163, now seen corresponding path program 1 times [2021-10-24 10:55:47,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:55:47,882 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26942685] [2021-10-24 10:55:47,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:55:47,884 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:55:48,007 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:55:48,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [553344846] [2021-10-24 10:55:48,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:55:48,009 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:55:48,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:55:48,011 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:55:48,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:55:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:55:48,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:55:48,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:55:48,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:55:48,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:55:48,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:55:48,388 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:55:48,388 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26942685] [2021-10-24 10:55:48,388 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:55:48,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553344846] [2021-10-24 10:55:48,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553344846] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:55:48,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:55:48,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:55:48,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764910262] [2021-10-24 10:55:48,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:55:48,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:55:48,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:55:48,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:55:48,445 INFO L87 Difference]: Start difference. First operand has 12 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-24 10:55:49,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:55:49,067 INFO L93 Difference]: Finished difference Result 26 states and 35 transitions. [2021-10-24 10:55:49,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-24 10:55:49,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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 4 [2021-10-24 10:55:49,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:55:49,075 INFO L225 Difference]: With dead ends: 26 [2021-10-24 10:55:49,075 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:55:49,078 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.6ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-24 10:55:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:55:49,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:55:49,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-24 10:55:49,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:55:49,111 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2021-10-24 10:55:49,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:55:49,111 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:55:49,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.2) internal successors, (6), 4 states have internal predecessors, (6), 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) [2021-10-24 10:55:49,113 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:55:49,113 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:55:49,120 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:55:49,121 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:55:49,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-10-24 10:55:49,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-24 10:55:49,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:55:49,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:55:49,393 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:55:49,414 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:55:49,502 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-24 10:55:49,503 INFO L853 garLoopResultBuilder]: At program point L36-2(lines 36 46) the Hoare annotation is: (or (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) (and (<= 1 ULTIMATE.start_main_~z~0) (<= ULTIMATE.start_main_~z~0 2) (= ULTIMATE.start_main_~x~0 1) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) [2021-10-24 10:55:49,503 INFO L857 garLoopResultBuilder]: For program point L36-3(lines 36 46) no Hoare annotation was computed. [2021-10-24 10:55:49,504 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:55:49,504 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-24 10:55:49,504 INFO L857 garLoopResultBuilder]: For program point L16(lines 16 19) no Hoare annotation was computed. [2021-10-24 10:55:49,505 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 39 40) the Hoare annotation is: (and (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1))) [2021-10-24 10:55:49,505 INFO L857 garLoopResultBuilder]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2021-10-24 10:55:49,505 INFO L853 garLoopResultBuilder]: At program point L16-5(lines 15 21) the Hoare annotation is: (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) [2021-10-24 10:55:49,506 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:55:49,506 INFO L857 garLoopResultBuilder]: For program point L17(lines 17 18) no Hoare annotation was computed. [2021-10-24 10:55:49,506 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2021-10-24 10:55:49,512 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:55:49,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:55:49 BoogieIcfgContainer [2021-10-24 10:55:49,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:55:49,531 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:55:49,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:55:49,532 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:55:49,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:55:47" (3/4) ... [2021-10-24 10:55:49,536 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:55:49,549 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-24 10:55:49,550 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-24 10:55:49,550 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-24 10:55:49,551 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:55:49,605 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:55:49,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:55:49,607 INFO L168 Benchmark]: Toolchain (without parser) took 3030.44 ms. Allocated memory is still 111.1 MB. Free memory was 75.3 MB in the beginning and 82.3 MB in the end (delta: -7.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:55:49,608 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 77.6 MB. Free memory was 53.0 MB in the beginning and 53.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:55:49,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.38 ms. Allocated memory is still 111.1 MB. Free memory was 75.3 MB in the beginning and 87.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-24 10:55:49,610 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.49 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:55:49,611 INFO L168 Benchmark]: Boogie Preprocessor took 28.67 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 84.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:55:49,611 INFO L168 Benchmark]: RCFGBuilder took 756.40 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 68.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:55:49,612 INFO L168 Benchmark]: TraceAbstraction took 1792.35 ms. Allocated memory is still 111.1 MB. Free memory was 68.3 MB in the beginning and 85.1 MB in the end (delta: -16.7 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:55:49,613 INFO L168 Benchmark]: Witness Printer took 74.66 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 82.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:55:49,617 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 77.6 MB. Free memory was 53.0 MB in the beginning and 53.0 MB in the end (delta: 21.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 322.38 ms. Allocated memory is still 111.1 MB. Free memory was 75.3 MB in the beginning and 87.1 MB in the end (delta: -11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.49 ms. Allocated memory is still 111.1 MB. Free memory was 87.1 MB in the beginning and 85.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.67 ms. Allocated memory is still 111.1 MB. Free memory was 85.6 MB in the beginning and 84.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 756.40 ms. Allocated memory is still 111.1 MB. Free memory was 84.6 MB in the beginning and 68.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1792.35 ms. Allocated memory is still 111.1 MB. Free memory was 68.3 MB in the beginning and 85.1 MB in the end (delta: -16.7 MB). Peak memory consumption was 35.9 MB. Max. memory is 16.1 GB. * Witness Printer took 74.66 ms. Allocated memory is still 111.1 MB. Free memory was 85.1 MB in the beginning and 82.3 MB in the end (delta: 2.8 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 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1684.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 9.8ms, AutomataDifference: 679.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 155.3ms, InitialAbstractionConstructionTime: 12.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3 SDtfs, 15 SDslu, 4 SDs, 0 SdLazy, 13 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 548.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 63.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 11.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 9 NumberOfFragments, 43 HoareAnnotationTreeSize, 3 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 67.5ms HoareSimplificationTime, 3 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 78.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 6.7ms SsaConstructionTime, 33.8ms SatisfiabilityAnalysisTime, 276.2ms InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 4 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 9 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 - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 <= cond && y + x == z * x + 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 <= cond - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: (1 <= cond && y + x == z * x + 1) || (((1 <= z && z <= 2) && x == 1) && z == y) RESULT: Ultimate proved your program to be correct! [2021-10-24 10:55:49,664 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cdbbed6-2f17-4b32-8652-75e65240fdff/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...