./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs --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 069e404bf7b01a351383c4004538ba52022db96a ................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs --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 069e404bf7b01a351383c4004538ba52022db96a ................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:44:42,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:44:42,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:44:42,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:44:42,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:44:42,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:44:42,115 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:44:42,118 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:44:42,127 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:44:42,133 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:44:42,134 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:44:42,137 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:44:42,138 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:44:42,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:44:42,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:44:42,150 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:44:42,152 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:44:42,153 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:44:42,156 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:44:42,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:44:42,166 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:44:42,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:44:42,171 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:44:42,172 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:44:42,182 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:44:42,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:44:42,185 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:44:42,186 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:44:42,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:44:42,190 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:44:42,190 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:44:42,191 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:44:42,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:44:42,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:44:42,196 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:44:42,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:44:42,197 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:44:42,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:44:42,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:44:42,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:44:42,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:44:42,200 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 02:44:42,251 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:44:42,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:44:42,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:44:42,254 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:44:42,254 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:44:42,254 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:44:42,254 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 02:44:42,255 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:44:42,261 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:44:42,261 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 02:44:42,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 02:44:42,262 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:44:42,263 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 02:44:42,263 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 02:44:42,263 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 02:44:42,264 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:44:42,264 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:44:42,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 02:44:42,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:44:42,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:44:42,265 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:44:42,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:44:42,266 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:44:42,266 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:44:42,266 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:44:42,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:44:42,267 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:44:42,267 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:44:42,267 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:44:42,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:44:42,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:42,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:44:42,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:44:42,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:44:42,270 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 02:44:42,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 02:44:42,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:44:42,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:44:42,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:44:42,271 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_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2021-10-16 02:44:42,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:44:42,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:44:42,589 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:44:42,591 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:44:42,592 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:44:42,593 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-16 02:44:42,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/eed4b5950/79e725e4915047528271bd15729ae5f2/FLAG9bb095211 [2021-10-16 02:44:43,196 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:44:43,197 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-16 02:44:43,201 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/eed4b5950/79e725e4915047528271bd15729ae5f2/FLAG9bb095211 [2021-10-16 02:44:43,588 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/eed4b5950/79e725e4915047528271bd15729ae5f2 [2021-10-16 02:44:43,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:44:43,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:44:43,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:43,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:44:43,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:44:43,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70b48d22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43, skipping insertion in model container [2021-10-16 02:44:43,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,621 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:44:43,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:44:43,802 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-16 02:44:43,813 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-16 02:44:43,816 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-16 02:44:43,817 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-16 02:44:43,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:43,830 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:44:43,843 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-16 02:44:43,844 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-16 02:44:43,846 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-16 02:44:43,847 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-16 02:44:43,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:43,863 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:44:43,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43 WrapperNode [2021-10-16 02:44:43,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:43,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:43,866 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:44:43,866 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:44:43,875 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:43,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:44:43,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:44:43,902 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:44:43,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,911 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,918 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:44:43,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:44:43,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:44:43,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:44:43,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (1/1) ... [2021-10-16 02:44:43,936 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:43,948 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:43,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:44:43,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:44:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:44:44,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:44:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 02:44:44,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:44:44,219 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:44:44,219 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:44:44,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:44 BoogieIcfgContainer [2021-10-16 02:44:44,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:44:44,233 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:44:44,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:44:44,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:44:44,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:44:43" (1/3) ... [2021-10-16 02:44:44,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755c2f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:44, skipping insertion in model container [2021-10-16 02:44:44,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:43" (2/3) ... [2021-10-16 02:44:44,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@755c2f11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:44, skipping insertion in model container [2021-10-16 02:44:44,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:44" (3/3) ... [2021-10-16 02:44:44,259 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-10-16 02:44:44,266 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:44:44,266 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-16 02:44:44,324 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:44:44,332 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:44:44,332 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 02:44:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:44,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-16 02:44:44,354 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:44,354 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-16 02:44:44,355 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:44:44,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:44,361 INFO L82 PathProgramCache]: Analyzing trace with hash 68392, now seen corresponding path program 1 times [2021-10-16 02:44:44,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 02:44:44,375 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442873446] [2021-10-16 02:44:44,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:44,376 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 02:44:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:44:44,507 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 02:44:44,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 02:44:44,600 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 02:44:44,602 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 02:44:44,605 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:44,608 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:44,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:44,609 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:44,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 02:44:44,618 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:44:44,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:44:44 BoogieIcfgContainer [2021-10-16 02:44:44,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:44:44,647 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:44:44,648 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:44:44,648 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:44:44,649 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:44" (3/4) ... [2021-10-16 02:44:44,653 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 02:44:44,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:44:44,659 INFO L168 Benchmark]: Toolchain (without parser) took 1063.24 ms. Allocated memory was 113.2 MB in the beginning and 151.0 MB in the end (delta: 37.7 MB). Free memory was 80.7 MB in the beginning and 100.0 MB in the end (delta: -19.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:44,660 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 113.2 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:44,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.10 ms. Allocated memory was 113.2 MB in the beginning and 151.0 MB in the end (delta: 37.7 MB). Free memory was 80.7 MB in the beginning and 125.9 MB in the end (delta: -45.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:44,665 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 124.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:44,668 INFO L168 Benchmark]: Boogie Preprocessor took 22.42 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 123.8 MB in the end (delta: 674.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:44,674 INFO L168 Benchmark]: RCFGBuilder took 298.46 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 114.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:44,675 INFO L168 Benchmark]: TraceAbstraction took 408.67 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 100.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:44,676 INFO L168 Benchmark]: Witness Printer took 6.89 ms. Allocated memory is still 151.0 MB. Free memory is still 100.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:44,685 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 113.2 MB. Free memory is still 66.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.10 ms. Allocated memory was 113.2 MB in the beginning and 151.0 MB in the end (delta: 37.7 MB). Free memory was 80.7 MB in the beginning and 125.9 MB in the end (delta: -45.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.19 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 124.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.42 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 123.8 MB in the end (delta: 674.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 298.46 ms. Allocated memory is still 151.0 MB. Free memory was 123.8 MB in the beginning and 114.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 408.67 ms. Allocated memory is still 151.0 MB. Free memory was 113.0 MB in the beginning and 100.0 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 6.89 ms. Allocated memory is still 151.0 MB. Free memory is still 100.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] reach_error() - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 294.3ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 8.9ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 15.2ms SsaConstructionTime, 45.4ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-16 02:44:44,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 02:44:47,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 02:44:47,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 02:44:47,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 02:44:47,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 02:44:47,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 02:44:47,570 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 02:44:47,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 02:44:47,583 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 02:44:47,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 02:44:47,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 02:44:47,595 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 02:44:47,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 02:44:47,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 02:44:47,601 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 02:44:47,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 02:44:47,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 02:44:47,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 02:44:47,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 02:44:47,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 02:44:47,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 02:44:47,626 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 02:44:47,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 02:44:47,632 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 02:44:47,642 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 02:44:47,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 02:44:47,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 02:44:47,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 02:44:47,646 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 02:44:47,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 02:44:47,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 02:44:47,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 02:44:47,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 02:44:47,653 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 02:44:47,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 02:44:47,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 02:44:47,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 02:44:47,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 02:44:47,657 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 02:44:47,659 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 02:44:47,660 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 02:44:47,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 02:44:47,710 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 02:44:47,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 02:44:47,712 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 02:44:47,712 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 02:44:47,713 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 02:44:47,713 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 02:44:47,713 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 02:44:47,713 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 02:44:47,714 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 02:44:47,715 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 02:44:47,717 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 02:44:47,717 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 02:44:47,717 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 02:44:47,718 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 02:44:47,718 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 02:44:47,718 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 02:44:47,718 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 02:44:47,719 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 02:44:47,719 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 02:44:47,719 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 02:44:47,719 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 02:44:47,720 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 02:44:47,720 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 02:44:47,720 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 02:44:47,720 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 02:44:47,721 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 02:44:47,721 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:47,721 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 02:44:47,721 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 02:44:47,722 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 02:44:47,722 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 02:44:47,722 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 02:44:47,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 02:44:47,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 02:44:47,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 02:44:47,724 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 069e404bf7b01a351383c4004538ba52022db96a [2021-10-16 02:44:48,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 02:44:48,203 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 02:44:48,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 02:44:48,208 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 02:44:48,209 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 02:44:48,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-16 02:44:48,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/6fc3bfb45/bc77c8123aa743acb1a13ee6893bc7b2/FLAGc7bab3840 [2021-10-16 02:44:48,938 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 02:44:48,939 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c [2021-10-16 02:44:48,946 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/6fc3bfb45/bc77c8123aa743acb1a13ee6893bc7b2/FLAGc7bab3840 [2021-10-16 02:44:49,300 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/data/6fc3bfb45/bc77c8123aa743acb1a13ee6893bc7b2 [2021-10-16 02:44:49,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 02:44:49,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 02:44:49,309 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:49,309 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 02:44:49,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 02:44:49,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f8d14eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49, skipping insertion in model container [2021-10-16 02:44:49,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 02:44:49,348 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 02:44:49,495 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-16 02:44:49,500 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-16 02:44:49,501 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-16 02:44:49,503 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-16 02:44:49,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:49,522 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 02:44:49,538 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[366,379] [2021-10-16 02:44:49,540 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[420,433] [2021-10-16 02:44:49,541 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[493,506] [2021-10-16 02:44:49,542 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_19930d33-f454-454f-910f-d84f3a0514c9/sv-benchmarks/c/floats-cbmc-regression/float2.c[557,570] [2021-10-16 02:44:49,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 02:44:49,594 INFO L208 MainTranslator]: Completed translation [2021-10-16 02:44:49,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49 WrapperNode [2021-10-16 02:44:49,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 02:44:49,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:49,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 02:44:49,613 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 02:44:49,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 02:44:49,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 02:44:49,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 02:44:49,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 02:44:49,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,699 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,709 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 02:44:49,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 02:44:49,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 02:44:49,716 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 02:44:49,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (1/1) ... [2021-10-16 02:44:49,736 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 02:44:49,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 02:44:49,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 02:44:49,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 02:44:49,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 02:44:49,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 02:44:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 02:44:49,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 02:44:50,286 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 02:44:50,287 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-16 02:44:50,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:50 BoogieIcfgContainer [2021-10-16 02:44:50,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 02:44:50,291 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 02:44:50,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 02:44:50,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 02:44:50,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 02:44:49" (1/3) ... [2021-10-16 02:44:50,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c39df1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:50, skipping insertion in model container [2021-10-16 02:44:50,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 02:44:49" (2/3) ... [2021-10-16 02:44:50,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c39df1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 02:44:50, skipping insertion in model container [2021-10-16 02:44:50,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:50" (3/3) ... [2021-10-16 02:44:50,312 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2021-10-16 02:44:50,319 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 02:44:50,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-16 02:44:50,418 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 02:44:50,433 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 02:44:50,433 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-16 02:44:50,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-10-16 02:44:50,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-16 02:44:50,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:50,469 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-16 02:44:50,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:44:50,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:50,478 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2021-10-16 02:44:50,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:50,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2092738604] [2021-10-16 02:44:50,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:50,494 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:50,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:50,499 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:50,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 02:44:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:50,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:50,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:50,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:50,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:51,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:51,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:51,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2092738604] [2021-10-16 02:44:51,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2092738604] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:51,351 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:51,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:51,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550264842] [2021-10-16 02:44:51,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:51,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:51,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:51,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:51,377 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 02:44:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:51,491 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-10-16 02:44:51,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:51,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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 [2021-10-16 02:44:51,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:51,502 INFO L225 Difference]: With dead ends: 35 [2021-10-16 02:44:51,502 INFO L226 Difference]: Without dead ends: 15 [2021-10-16 02:44:51,505 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 320.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:51,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-16 02:44:51,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-16 02:44:51,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 14 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 02:44:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-16 02:44:51,538 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 4 [2021-10-16 02:44:51,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:51,540 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-16 02:44:51,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 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) [2021-10-16 02:44:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-16 02:44:51,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-16 02:44:51,545 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:51,546 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-16 02:44:51,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:51,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:44:51,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:51,759 INFO L82 PathProgramCache]: Analyzing trace with hash 889629862, now seen corresponding path program 1 times [2021-10-16 02:44:51,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:51,760 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526709705] [2021-10-16 02:44:51,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:51,761 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:51,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:51,762 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:51,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 02:44:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:51,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:51,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:51,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:51,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:51,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:51,973 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:51,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526709705] [2021-10-16 02:44:51,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526709705] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:51,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:51,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:51,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844626522] [2021-10-16 02:44:51,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:51,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:51,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:51,985 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-16 02:44:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:52,105 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-16 02:44:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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 6 [2021-10-16 02:44:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:52,107 INFO L225 Difference]: With dead ends: 15 [2021-10-16 02:44:52,107 INFO L226 Difference]: Without dead ends: 13 [2021-10-16 02:44:52,108 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:52,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-16 02:44:52,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-10-16 02:44:52,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 12 states have internal predecessors, (12), 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) [2021-10-16 02:44:52,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-10-16 02:44:52,111 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 6 [2021-10-16 02:44:52,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:52,111 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-10-16 02:44:52,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 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) [2021-10-16 02:44:52,111 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-10-16 02:44:52,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 02:44:52,112 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:52,112 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:52,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:52,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:52,323 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:44:52,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:52,331 INFO L82 PathProgramCache]: Analyzing trace with hash 235930184, now seen corresponding path program 1 times [2021-10-16 02:44:52,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:52,332 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84317481] [2021-10-16 02:44:52,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:52,333 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:52,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:52,336 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:52,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 02:44:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:52,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:52,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:52,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:52,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:52,506 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:52,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84317481] [2021-10-16 02:44:52,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84317481] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:52,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:52,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:52,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265338111] [2021-10-16 02:44:52,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:52,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:52,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:52,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:52,515 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-16 02:44:52,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:52,656 INFO L93 Difference]: Finished difference Result 13 states and 12 transitions. [2021-10-16 02:44:52,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:52,657 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) Word has length 8 [2021-10-16 02:44:52,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:52,658 INFO L225 Difference]: With dead ends: 13 [2021-10-16 02:44:52,658 INFO L226 Difference]: Without dead ends: 11 [2021-10-16 02:44:52,658 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:52,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-16 02:44:52,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-16 02:44:52,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.0) internal successors, (10), 10 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) [2021-10-16 02:44:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 10 transitions. [2021-10-16 02:44:52,661 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 10 transitions. Word has length 8 [2021-10-16 02:44:52,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:52,661 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 10 transitions. [2021-10-16 02:44:52,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 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) [2021-10-16 02:44:52,662 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 10 transitions. [2021-10-16 02:44:52,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 02:44:52,662 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 02:44:52,662 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 02:44:52,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 02:44:52,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:52,877 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2021-10-16 02:44:52,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 02:44:52,878 INFO L82 PathProgramCache]: Analyzing trace with hash -904234870, now seen corresponding path program 1 times [2021-10-16 02:44:52,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 02:44:52,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [671720844] [2021-10-16 02:44:52,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 02:44:52,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 02:44:52,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 02:44:52,880 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 02:44:52,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 02:44:52,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 02:44:52,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-16 02:44:52,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 02:44:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:53,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 02:44:53,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 02:44:53,068 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 02:44:53,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [671720844] [2021-10-16 02:44:53,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [671720844] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 02:44:53,069 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 02:44:53,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-16 02:44:53,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841001467] [2021-10-16 02:44:53,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-16 02:44:53,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 02:44:53,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-16 02:44:53,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:53,073 INFO L87 Difference]: Start difference. First operand 11 states and 10 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 02:44:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 02:44:53,265 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2021-10-16 02:44:53,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 02:44:53,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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 10 [2021-10-16 02:44:53,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 02:44:53,267 INFO L225 Difference]: With dead ends: 11 [2021-10-16 02:44:53,267 INFO L226 Difference]: Without dead ends: 0 [2021-10-16 02:44:53,267 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-16 02:44:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-16 02:44:53,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-16 02:44:53,268 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) [2021-10-16 02:44:53,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-16 02:44:53,268 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-10-16 02:44:53,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 02:44:53,269 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-16 02:44:53,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 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) [2021-10-16 02:44:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-16 02:44:53,269 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-16 02:44:53,272 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:53,273 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:53,273 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:53,273 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 02:44:53,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-10-16 02:44:53,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 02:44:53,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-16 02:44:53,491 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-16 02:44:53,491 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-16 02:44:53,491 INFO L857 garLoopResultBuilder]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-16 02:44:53,491 INFO L857 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-10-16 02:44:53,491 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2021-10-16 02:44:53,491 INFO L857 garLoopResultBuilder]: For program point L19(line 19) no Hoare annotation was computed. [2021-10-16 02:44:53,492 INFO L857 garLoopResultBuilder]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-10-16 02:44:53,492 INFO L857 garLoopResultBuilder]: For program point L19-3(line 19) no Hoare annotation was computed. [2021-10-16 02:44:53,492 INFO L857 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2021-10-16 02:44:53,492 INFO L857 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-10-16 02:44:53,492 INFO L857 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2021-10-16 02:44:53,492 INFO L857 garLoopResultBuilder]: For program point L5(lines 5 24) no Hoare annotation was computed. [2021-10-16 02:44:53,492 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-16 02:44:53,493 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-16 02:44:53,493 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-16 02:44:53,493 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-10-16 02:44:53,493 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-10-16 02:44:53,493 INFO L857 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2021-10-16 02:44:53,493 INFO L857 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-10-16 02:44:53,493 INFO L857 garLoopResultBuilder]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-10-16 02:44:53,498 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 02:44:53,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 02:44:53 BoogieIcfgContainer [2021-10-16 02:44:53,501 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 02:44:53,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 02:44:53,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 02:44:53,502 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 02:44:53,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 02:44:50" (3/4) ... [2021-10-16 02:44:53,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-16 02:44:53,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-16 02:44:53,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-16 02:44:53,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-16 02:44:53,529 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-16 02:44:53,560 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 02:44:53,560 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 02:44:53,562 INFO L168 Benchmark]: Toolchain (without parser) took 4256.86 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.3 MB in the beginning and 34.0 MB in the end (delta: -745.1 kB). Peak memory consumption was 15.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:53,563 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 36.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:53,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.94 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.1 MB in the beginning and 55.5 MB in the end (delta: -22.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:53,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.26 ms. Allocated memory is still 71.3 MB. Free memory was 55.3 MB in the beginning and 53.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:53,564 INFO L168 Benchmark]: Boogie Preprocessor took 48.64 ms. Allocated memory is still 71.3 MB. Free memory was 53.9 MB in the beginning and 52.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 02:44:53,564 INFO L168 Benchmark]: RCFGBuilder took 573.85 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 43.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:53,565 INFO L168 Benchmark]: TraceAbstraction took 3209.42 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 36.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:53,565 INFO L168 Benchmark]: Witness Printer took 59.16 ms. Allocated memory is still 71.3 MB. Free memory was 36.5 MB in the beginning and 34.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 02:44:53,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 54.5 MB. Free memory is still 36.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.94 ms. Allocated memory was 54.5 MB in the beginning and 71.3 MB in the end (delta: 16.8 MB). Free memory was 33.1 MB in the beginning and 55.5 MB in the end (delta: -22.4 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.26 ms. Allocated memory is still 71.3 MB. Free memory was 55.3 MB in the beginning and 53.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.64 ms. Allocated memory is still 71.3 MB. Free memory was 53.9 MB in the beginning and 52.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 573.85 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 43.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3209.42 ms. Allocated memory is still 71.3 MB. Free memory was 43.1 MB in the beginning and 36.5 MB in the end (delta: 6.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * Witness Printer took 59.16 ms. Allocated memory is still 71.3 MB. Free memory was 36.5 MB in the beginning and 34.0 MB in the end (delta: 2.5 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: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 23]: 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, 20 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 3081.7ms, OverallIterations: 4, TraceHistogramMax: 1, EmptinessCheckTime: 23.0ms, AutomataDifference: 622.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 3.3ms, InitialAbstractionConstructionTime: 14.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 34 SDtfs, 14 SDslu, 5 SDs, 0 SdLazy, 37 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 501.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 379.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.2ms AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0ms HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 62.3ms SsaConstructionTime, 130.4ms SatisfiabilityAnalysisTime, 1063.3ms InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 92 SizeOfPredicates, 8 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-16 02:44:53,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_19930d33-f454-454f-910f-d84f3a0514c9/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...