./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8 --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 6c4c876bf3d38b01f54a088b76131bc8275dc44ae3ac622f7c3187fe3c7bf156 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:20:42,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:20:42,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:20:42,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:20:42,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:20:42,238 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:20:42,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:20:42,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:20:42,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:20:42,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:20:42,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:20:42,261 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:20:42,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:20:42,264 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:20:42,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:20:42,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:20:42,274 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:20:42,275 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:20:42,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:20:42,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:20:42,289 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:20:42,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:20:42,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:20:42,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:20:42,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:20:42,302 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:20:42,303 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:20:42,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:20:42,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:20:42,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:20:42,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:20:42,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:20:42,310 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:20:42,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:20:42,313 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:20:42,313 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:20:42,314 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:20:42,314 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:20:42,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:20:42,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:20:42,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:20:42,317 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:20:42,367 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:20:42,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:20:42,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:20:42,369 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:20:42,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:20:42,370 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:20:42,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:20:42,370 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:20:42,377 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:20:42,377 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:20:42,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:20:42,378 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:20:42,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:20:42,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:20:42,379 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:20:42,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:20:42,380 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:20:42,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:20:42,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:20:42,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:20:42,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:20:42,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:20:42,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:20:42,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:20:42,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:20:42,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:20:42,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:20:42,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:20:42,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:20:42,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:20:42,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:42,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:20:42,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:20:42,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:20:42,386 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:20:42,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:20:42,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:20:42,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:20:42,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:20:42,388 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_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c4c876bf3d38b01f54a088b76131bc8275dc44ae3ac622f7c3187fe3c7bf156 [2021-11-07 01:20:42,638 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:20:42,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:20:42,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:20:42,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:20:42,676 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:20:42,677 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c [2021-11-07 01:20:42,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/data/c390ff3b6/580ef186181f48f4b87448bdc1266b2e/FLAGd48b699d0 [2021-11-07 01:20:43,160 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:20:43,161 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c [2021-11-07 01:20:43,168 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/data/c390ff3b6/580ef186181f48f4b87448bdc1266b2e/FLAGd48b699d0 [2021-11-07 01:20:43,542 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/data/c390ff3b6/580ef186181f48f4b87448bdc1266b2e [2021-11-07 01:20:43,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:20:43,546 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:20:43,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:43,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:20:43,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:20:43,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e528d4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43, skipping insertion in model container [2021-11-07 01:20:43,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:20:43,576 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:20:43,757 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_c63aa1d3-5c8f-451a-b7be-77d437923c5a/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c[524,537] [2021-11-07 01:20:43,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:43,779 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:20:43,790 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_c63aa1d3-5c8f-451a-b7be-77d437923c5a/sv-benchmarks/c/nla-digbench-scaling/fermat2-ll_valuebound10.c[524,537] [2021-11-07 01:20:43,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:20:43,812 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:20:43,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43 WrapperNode [2021-11-07 01:20:43,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:20:43,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:43,815 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:20:43,815 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:20:43,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:20:43,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:20:43,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:20:43,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:20:43,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,862 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:20:43,875 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:20:43,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:20:43,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:20:43,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (1/1) ... [2021-11-07 01:20:43,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:20:43,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:43,910 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:20:43,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:20:43,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:20:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:20:43,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:20:43,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:20:44,339 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:20:44,340 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2021-11-07 01:20:44,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:44 BoogieIcfgContainer [2021-11-07 01:20:44,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:20:44,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:20:44,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:20:44,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:20:44,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:20:43" (1/3) ... [2021-11-07 01:20:44,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242789b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:44, skipping insertion in model container [2021-11-07 01:20:44,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:20:43" (2/3) ... [2021-11-07 01:20:44,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@242789b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:20:44, skipping insertion in model container [2021-11-07 01:20:44,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:44" (3/3) ... [2021-11-07 01:20:44,352 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat2-ll_valuebound10.c [2021-11-07 01:20:44,357 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:20:44,373 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:20:44,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:20:44,458 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 [2021-11-07 01:20:44,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:20:44,471 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) [2021-11-07 01:20:44,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 01:20:44,476 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:44,476 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 01:20:44,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:20:44,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:44,483 INFO L85 PathProgramCache]: Analyzing trace with hash 3762700, now seen corresponding path program 1 times [2021-11-07 01:20:44,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:20:44,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101590339] [2021-11-07 01:20:44,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:44,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:20:44,578 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:20:44,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564421642] [2021-11-07 01:20:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:44,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:20:44,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:44,594 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:20:44,616 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:20:44,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:44,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 01:20:44,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:20:44,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:44,952 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:20:55,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:55,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:20:55,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101590339] [2021-11-07 01:20:55,030 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:20:55,030 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564421642] [2021-11-07 01:20:55,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564421642] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:55,031 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:55,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 01:20:55,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764097010] [2021-11-07 01:20:55,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:20:55,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:20:55,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:20:55,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2021-11-07 01:20:55,053 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) [2021-11-07 01:21:20,835 WARN L207 SmtUtils]: Spent 25.76 s on a formula simplification. DAG size of input: 30 DAG size of output: 23 [2021-11-07 01:21:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:26,676 INFO L93 Difference]: Finished difference Result 30 states and 39 transitions. [2021-11-07 01:21:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 01:21:26,678 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 [2021-11-07 01:21:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:26,685 INFO L225 Difference]: With dead ends: 30 [2021-11-07 01:21:26,685 INFO L226 Difference]: Without dead ends: 15 [2021-11-07 01:21:26,688 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 39.9s TimeCoverageRelationStatistics Valid=22, Invalid=33, Unknown=1, NotChecked=0, Total=56 [2021-11-07 01:21:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-07 01:21:26,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 8. [2021-11-07 01:21:26,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:26,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-07 01:21:26,716 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2021-11-07 01:21:26,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:26,717 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-07 01:21:26,717 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) [2021-11-07 01:21:26,717 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-07 01:21:26,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-07 01:21:26,718 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:21:26,718 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:21:26,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:26,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-07 01:21:26,933 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:21:26,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:21:26,933 INFO L85 PathProgramCache]: Analyzing trace with hash 430365587, now seen corresponding path program 1 times [2021-11-07 01:21:26,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:21:26,934 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51209304] [2021-11-07 01:21:26,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:26,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:21:26,940 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 01:21:26,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48985922] [2021-11-07 01:21:26,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:21:26,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:21:26,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:21:26,951 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:21:26,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 01:21:27,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:21:27,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-07 01:21:27,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:27,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:21:27,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:27,265 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:21:27,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51209304] [2021-11-07 01:21:27,266 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 01:21:27,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48985922] [2021-11-07 01:21:27,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48985922] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:21:27,267 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:21:27,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2021-11-07 01:21:27,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135174027] [2021-11-07 01:21:27,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:21:27,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:21:27,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:21:27,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:21:27,270 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:27,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:21:27,407 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-11-07 01:21:27,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:21:27,408 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-07 01:21:27,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:21:27,409 INFO L225 Difference]: With dead ends: 9 [2021-11-07 01:21:27,409 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:21:27,410 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:21:27,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:21:27,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:21:27,410 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) [2021-11-07 01:21:27,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:21:27,410 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-11-07 01:21:27,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:21:27,411 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:21:27,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:21:27,411 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:21:27,411 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:21:27,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:21:27,414 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:21:27,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:21:27,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:21:27,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:21:27,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:27,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:27,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:21:29,713 INFO L857 garLoopResultBuilder]: For program point L35-2(lines 35 46) no Hoare annotation was computed. [2021-11-07 01:21:29,714 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:21:29,714 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:21:29,714 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-07 01:21:29,714 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:21:29,714 INFO L853 garLoopResultBuilder]: At program point L12-2(line 37) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0)))) [2021-11-07 01:21:29,715 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2021-11-07 01:21:29,715 INFO L853 garLoopResultBuilder]: At program point L12-5(lines 11 17) the Hoare annotation is: (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0))) [2021-11-07 01:21:29,715 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:21:29,715 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:21:29,715 INFO L857 garLoopResultBuilder]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2021-11-07 01:21:29,715 INFO L853 garLoopResultBuilder]: At program point L39-2(lines 35 46) the Hoare annotation is: (and (= (+ (* 2 ULTIMATE.start_main_~u~0) (* 4 ULTIMATE.start_main_~A~0) (* ULTIMATE.start_main_~v~0 ULTIMATE.start_main_~v~0) (* 4 ULTIMATE.start_main_~r~0)) (+ (* ULTIMATE.start_main_~u~0 ULTIMATE.start_main_~u~0) (* 2 ULTIMATE.start_main_~v~0))) (or (and (= (mod (+ ULTIMATE.start_main_~u~0 1) (- 2)) 0) (= ULTIMATE.start_main_~v~0 1)) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond))) [2021-11-07 01:21:29,719 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:21:29,720 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:21:29,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:21:29 BoogieIcfgContainer [2021-11-07 01:21:29,735 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:21:29,735 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:21:29,735 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:21:29,735 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:21:29,736 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:20:44" (3/4) ... [2021-11-07 01:21:29,739 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:21:29,749 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-07 01:21:29,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-07 01:21:29,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:21:29,750 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-07 01:21:29,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:21:29,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:21:29,799 INFO L168 Benchmark]: Toolchain (without parser) took 46252.12 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 54.1 MB in the beginning and 55.4 MB in the end (delta: -1.3 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:29,799 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 58.7 MB in the beginning and 58.7 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:21:29,800 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.44 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 64.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:29,800 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.36 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:29,801 INFO L168 Benchmark]: Boogie Preprocessor took 23.15 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 61.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:29,801 INFO L168 Benchmark]: RCFGBuilder took 467.28 ms. Allocated memory is still 88.1 MB. Free memory was 61.4 MB in the beginning and 44.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:29,802 INFO L168 Benchmark]: TraceAbstraction took 45390.45 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.9 MB in the beginning and 58.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:29,803 INFO L168 Benchmark]: Witness Printer took 62.29 ms. Allocated memory is still 107.0 MB. Free memory was 58.9 MB in the beginning and 55.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:21:29,806 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 88.1 MB. Free memory was 58.7 MB in the beginning and 58.7 MB in the end (delta: 25.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 265.44 ms. Allocated memory is still 88.1 MB. Free memory was 53.9 MB in the beginning and 64.1 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.36 ms. Allocated memory is still 88.1 MB. Free memory was 64.1 MB in the beginning and 62.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.15 ms. Allocated memory is still 88.1 MB. Free memory was 62.8 MB in the beginning and 61.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 467.28 ms. Allocated memory is still 88.1 MB. Free memory was 61.4 MB in the beginning and 44.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 45390.45 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 43.9 MB in the beginning and 58.9 MB in the end (delta: -15.0 MB). Peak memory consumption was 5.6 MB. Max. memory is 16.1 GB. * Witness Printer took 62.29 ms. Allocated memory is still 107.0 MB. Free memory was 58.9 MB in the beginning and 55.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 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, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: 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: 45.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 31.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 6 SDtfs, 32 SDslu, 8 SDs, 0 SdLazy, 26 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 40.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 8 NumberOfFragments, 83 HoareAnnotationTreeSize, 3 FomulaSimplifications, 218 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3 FormulaSimplificationTreeSizeReductionInter, 2.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 10.6s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 227 SizeOfPredicates, 17 NumberOfNonLiveVariables, 119 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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: 37]: Loop Invariant Derived loop invariant: 1 == cond && 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v && (((u + 1) % -2 == 0 && v == 1) || 1 <= cond) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 2 * u + 4 * A + v * v + 4 * r == u * u + 2 * v RESULT: Ultimate proved your program to be correct! [2021-11-07 01:21:29,841 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c63aa1d3-5c8f-451a-b7be-77d437923c5a/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE