./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8 --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 f22151260432e5b71f08e38556ae1504245a6b14 ...................................................................................................................................................................................................................................................................................................................................................................... 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_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8 --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 f22151260432e5b71f08e38556ae1504245a6b14 ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:25:04,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:04,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:05,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:05,032 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:05,037 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:05,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:05,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:05,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:05,054 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:05,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:05,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:05,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:05,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:05,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:05,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:05,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:05,077 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:05,080 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:05,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:05,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:05,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:05,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:05,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:05,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:05,109 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:05,110 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:05,112 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:05,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:05,115 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:05,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:05,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:05,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:05,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:05,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:05,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:05,125 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:05,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:05,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:05,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:05,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:05,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 07:25:05,185 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:05,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:05,188 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:05,188 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:05,188 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:05,189 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:05,189 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 07:25:05,189 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:05,190 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:05,190 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 07:25:05,191 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 07:25:05,191 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:05,191 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 07:25:05,192 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 07:25:05,192 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 07:25:05,193 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:05,193 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:05,193 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 07:25:05,193 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:05,194 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:05,194 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:05,194 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:05,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:05,195 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:05,195 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:05,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:05,195 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:05,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:05,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:05,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:05,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:05,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:05,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:05,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:05,207 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 07:25:05,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 07:25:05,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:05,207 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:05,208 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:05,208 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_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f22151260432e5b71f08e38556ae1504245a6b14 [2021-10-13 07:25:05,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:05,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:05,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:05,533 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:05,539 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:05,540 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-10-13 07:25:05,630 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/87acbb7e5/52c67492f1aa42439620ddc92f1da14d/FLAG65f3c8cb6 [2021-10-13 07:25:06,240 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:06,241 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-10-13 07:25:06,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/87acbb7e5/52c67492f1aa42439620ddc92f1da14d/FLAG65f3c8cb6 [2021-10-13 07:25:06,556 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/87acbb7e5/52c67492f1aa42439620ddc92f1da14d [2021-10-13 07:25:06,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:06,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:06,563 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:06,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:06,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:06,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,570 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@176a3d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06, skipping insertion in model container [2021-10-13 07:25:06,571 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:06,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:06,749 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_f3cf390d-1e91-40b0-aba5-99f780c9200d/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-10-13 07:25:06,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:06,774 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:06,790 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-10-13 07:25:06,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:06,808 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:06,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06 WrapperNode [2021-10-13 07:25:06,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:06,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:06,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:06,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:06,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,829 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:06,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:06,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:06,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:06,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,864 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,865 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:06,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:06,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:06,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:06,879 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (1/1) ... [2021-10-13 07:25:06,891 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:06,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:06,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:06,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 07:25:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:06,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:06,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:07,206 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:07,207 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:25:07,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:07 BoogieIcfgContainer [2021-10-13 07:25:07,209 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:07,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:07,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:07,215 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:06" (1/3) ... [2021-10-13 07:25:07,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e335d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:07, skipping insertion in model container [2021-10-13 07:25:07,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:06" (2/3) ... [2021-10-13 07:25:07,217 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e335d3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:07, skipping insertion in model container [2021-10-13 07:25:07,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:07" (3/3) ... [2021-10-13 07:25:07,218 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2021-10-13 07:25:07,224 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:07,224 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:25:07,270 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:07,277 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:25:07,278 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:25:07,292 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-13 07:25:07,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:07,297 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-13 07:25:07,297 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:07,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:07,303 INFO L82 PathProgramCache]: Analyzing trace with hash 59349214, now seen corresponding path program 1 times [2021-10-13 07:25:07,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:07,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208790766] [2021-10-13 07:25:07,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:07,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:07,425 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:25:07,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428192330] [2021-10-13 07:25:07,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:07,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:07,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:07,442 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:07,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-13 07:25:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:07,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:25:07,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:07,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:07,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:07,718 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:07,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208790766] [2021-10-13 07:25:07,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:25:07,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428192330] [2021-10-13 07:25:07,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428192330] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:07,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:07,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-13 07:25:07,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68391125] [2021-10-13 07:25:07,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 07:25:07,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 07:25:07,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 07:25:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:07,753 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:07,781 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2021-10-13 07:25:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:07,783 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2021-10-13 07:25:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:07,791 INFO L225 Difference]: With dead ends: 16 [2021-10-13 07:25:07,792 INFO L226 Difference]: Without dead ends: 7 [2021-10-13 07:25:07,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 07:25:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-13 07:25:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-13 07:25:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-10-13 07:25:07,825 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-10-13 07:25:07,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:07,826 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-10-13 07:25:07,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:07,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-10-13 07:25:07,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 07:25:07,827 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:07,827 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 07:25:07,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:08,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-10-13 07:25:08,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:08,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:08,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1839242300, now seen corresponding path program 1 times [2021-10-13 07:25:08,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 07:25:08,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903217655] [2021-10-13 07:25:08,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:08,055 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 07:25:08,077 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-13 07:25:08,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1838754249] [2021-10-13 07:25:08,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:08,078 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:08,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:08,079 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:08,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-13 07:25:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:08,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:25:08,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:08,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:08,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 07:25:08,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903217655] [2021-10-13 07:25:08,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-13 07:25:08,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838754249] [2021-10-13 07:25:08,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838754249] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:08,508 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [170123113] [2021-10-13 07:25:08,532 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2021-10-13 07:25:08,533 INFO L166 IcfgInterpreter]: Building call graph [2021-10-13 07:25:08,538 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-13 07:25:08,545 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-13 07:25:08,545 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-13 07:25:08,577 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,579 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:25:08,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,581 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-10-13 07:25:08,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-10-13 07:25:08,587 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,588 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-10-13 07:25:08,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 97 [2021-10-13 07:25:08,666 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-10-13 07:25:08,723 INFO L354 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2021-10-13 07:25:08,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 26 [2021-10-13 07:25:08,726 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,731 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:25:08,733 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,734 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-10-13 07:25:08,734 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-10-13 07:25:08,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:08,783 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,785 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-10-13 07:25:08,788 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 82 [2021-10-13 07:25:08,790 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-10-13 07:25:08,794 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:94, output treesize:82 [2021-10-13 07:25:08,825 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:09,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:09,010 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: No corresponding IProgramVar for |v_#length_8| at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:83) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.constructTermVarsProc(BasicPredicateFactory.java:92) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.newPredicate(BasicPredicateFactory.java:81) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.predicate(SymbolicTools.java:174) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:608) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:53) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:392) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-10-13 07:25:09,014 INFO L168 Benchmark]: Toolchain (without parser) took 2451.75 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 64.9 MB in the beginning and 86.0 MB in the end (delta: -21.1 MB). Peak memory consumption was 38.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:09,014 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:09,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.05 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 55.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:09,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.48 ms. Allocated memory is still 90.2 MB. Free memory was 55.2 MB in the beginning and 54.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:09,016 INFO L168 Benchmark]: Boogie Preprocessor took 24.83 ms. Allocated memory is still 90.2 MB. Free memory was 54.0 MB in the beginning and 53.0 MB in the end (delta: 954.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:09,017 INFO L168 Benchmark]: RCFGBuilder took 332.22 ms. Allocated memory is still 90.2 MB. Free memory was 52.9 MB in the beginning and 43.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:09,017 INFO L168 Benchmark]: TraceAbstraction took 1801.20 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 42.7 MB in the beginning and 86.0 MB in the end (delta: -43.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:09,020 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 90.2 MB. Free memory is still 62.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 246.05 ms. Allocated memory is still 90.2 MB. Free memory was 64.7 MB in the beginning and 55.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.48 ms. Allocated memory is still 90.2 MB. Free memory was 55.2 MB in the beginning and 54.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.83 ms. Allocated memory is still 90.2 MB. Free memory was 54.0 MB in the beginning and 53.0 MB in the end (delta: 954.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 332.22 ms. Allocated memory is still 90.2 MB. Free memory was 52.9 MB in the beginning and 43.2 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1801.20 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 42.7 MB in the beginning and 86.0 MB in the end (delta: -43.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: No corresponding IProgramVar for |v_#length_8| de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: No corresponding IProgramVar for |v_#length_8|: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermVarsProc.computeTermVarsProc(TermVarsProc.java:97) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2021-10-13 07:25:09,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 07:25:11,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 07:25:11,889 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 07:25:11,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 07:25:11,930 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 07:25:11,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 07:25:11,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 07:25:11,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 07:25:11,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 07:25:11,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 07:25:11,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 07:25:11,945 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 07:25:11,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 07:25:11,947 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 07:25:11,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 07:25:11,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 07:25:11,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 07:25:11,955 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 07:25:11,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 07:25:11,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 07:25:11,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 07:25:11,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 07:25:11,977 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 07:25:11,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 07:25:11,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 07:25:11,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 07:25:11,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 07:25:11,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 07:25:11,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 07:25:11,997 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 07:25:11,997 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 07:25:11,998 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 07:25:11,999 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 07:25:12,000 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 07:25:12,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 07:25:12,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 07:25:12,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 07:25:12,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 07:25:12,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 07:25:12,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 07:25:12,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 07:25:12,006 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-13 07:25:12,037 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 07:25:12,038 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 07:25:12,039 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 07:25:12,039 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 07:25:12,039 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 07:25:12,039 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 07:25:12,040 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 07:25:12,040 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 07:25:12,040 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 07:25:12,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 07:25:12,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 07:25:12,041 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 07:25:12,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 07:25:12,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 07:25:12,042 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 07:25:12,042 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 07:25:12,043 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 07:25:12,043 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-13 07:25:12,043 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-13 07:25:12,043 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 07:25:12,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 07:25:12,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 07:25:12,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 07:25:12,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 07:25:12,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 07:25:12,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 07:25:12,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:12,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 07:25:12,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 07:25:12,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 07:25:12,046 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-13 07:25:12,046 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:12,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 07:25:12,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 07:25:12,047 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 07:25:12,047 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_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f22151260432e5b71f08e38556ae1504245a6b14 [2021-10-13 07:25:12,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 07:25:12,574 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 07:25:12,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 07:25:12,579 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 07:25:12,580 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 07:25:12,584 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-10-13 07:25:12,681 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/ea63542ad/2303a4ac7e544f1885853880ffbebf8c/FLAGda13ffc2e [2021-10-13 07:25:13,290 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 07:25:13,291 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i [2021-10-13 07:25:13,297 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/ea63542ad/2303a4ac7e544f1885853880ffbebf8c/FLAGda13ffc2e [2021-10-13 07:25:13,665 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/data/ea63542ad/2303a4ac7e544f1885853880ffbebf8c [2021-10-13 07:25:13,668 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 07:25:13,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 07:25:13,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:13,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 07:25:13,688 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 07:25:13,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@315dd903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13, skipping insertion in model container [2021-10-13 07:25:13,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 07:25:13,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 07:25:13,835 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_f3cf390d-1e91-40b0-aba5-99f780c9200d/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-10-13 07:25:13,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:13,855 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 07:25:13,869 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_f3cf390d-1e91-40b0-aba5-99f780c9200d/sv-benchmarks/c/loop-zilu/benchmark52_polynomial.i[872,885] [2021-10-13 07:25:13,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 07:25:13,884 INFO L208 MainTranslator]: Completed translation [2021-10-13 07:25:13,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13 WrapperNode [2021-10-13 07:25:13,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 07:25:13,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:13,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 07:25:13,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 07:25:13,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,933 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 07:25:13,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 07:25:13,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 07:25:13,934 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 07:25:13,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,944 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,950 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,954 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 07:25:13,957 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 07:25:13,957 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 07:25:13,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 07:25:13,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (1/1) ... [2021-10-13 07:25:13,965 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 07:25:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:14,002 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 07:25:14,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 07:25:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-13 07:25:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 07:25:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 07:25:14,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 07:25:14,417 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 07:25:14,418 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-13 07:25:14,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:14 BoogieIcfgContainer [2021-10-13 07:25:14,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 07:25:14,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 07:25:14,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 07:25:14,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 07:25:14,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:25:13" (1/3) ... [2021-10-13 07:25:14,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ef357e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:14, skipping insertion in model container [2021-10-13 07:25:14,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:25:13" (2/3) ... [2021-10-13 07:25:14,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72ef357e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:25:14, skipping insertion in model container [2021-10-13 07:25:14,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:14" (3/3) ... [2021-10-13 07:25:14,434 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark52_polynomial.i [2021-10-13 07:25:14,441 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 07:25:14,441 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 07:25:14,511 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 07:25:14,526 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-13 07:25:14,526 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 07:25:14,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:14,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:25:14,573 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:14,574 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:14,575 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:14,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1807089479, now seen corresponding path program 1 times [2021-10-13 07:25:14,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:14,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775627583] [2021-10-13 07:25:14,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:14,608 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:14,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:14,617 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:14,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-13 07:25:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:14,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-13 07:25:14,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:14,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:14,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:14,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:14,874 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:14,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775627583] [2021-10-13 07:25:14,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775627583] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:14,875 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:14,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-13 07:25:14,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083760356] [2021-10-13 07:25:14,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 07:25:14,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:14,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 07:25:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:25:14,905 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:14,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:14,920 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-10-13 07:25:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 07:25:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:25:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:14,930 INFO L225 Difference]: With dead ends: 20 [2021-10-13 07:25:14,931 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 07:25:14,935 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 07:25:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 07:25:14,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 07:25:14,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:14,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 07:25:14,972 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-10-13 07:25:14,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:14,973 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 07:25:14,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:14,973 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 07:25:14,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 07:25:14,974 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:14,974 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:14,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:15,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:15,188 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:15,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:15,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1806970315, now seen corresponding path program 1 times [2021-10-13 07:25:15,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:15,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [336972755] [2021-10-13 07:25:15,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:15,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:15,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:15,191 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:15,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-13 07:25:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:15,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-13 07:25:15,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:15,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:15,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:15,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:15,603 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:15,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [336972755] [2021-10-13 07:25:15,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [336972755] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-13 07:25:15,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-13 07:25:15,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-13 07:25:15,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854583804] [2021-10-13 07:25:15,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 07:25:15,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:15,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 07:25:15,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:25:15,607 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:15,683 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-13 07:25:15,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 07:25:15,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-13 07:25:15,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:15,687 INFO L225 Difference]: With dead ends: 13 [2021-10-13 07:25:15,687 INFO L226 Difference]: Without dead ends: 9 [2021-10-13 07:25:15,688 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 07:25:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-13 07:25:15,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-13 07:25:15,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:15,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-13 07:25:15,692 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-10-13 07:25:15,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:15,692 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-13 07:25:15,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:15,693 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-13 07:25:15,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 07:25:15,694 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 07:25:15,694 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 07:25:15,714 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:15,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:15,907 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 07:25:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 07:25:15,908 INFO L82 PathProgramCache]: Analyzing trace with hash 183170323, now seen corresponding path program 1 times [2021-10-13 07:25:15,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-13 07:25:15,909 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2099980352] [2021-10-13 07:25:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:15,909 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-13 07:25:15,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat [2021-10-13 07:25:15,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-13 07:25:15,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-13 07:25:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:16,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:25:16,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:16,516 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:16,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:17,278 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-13 07:25:17,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2099980352] [2021-10-13 07:25:17,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2099980352] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:17,279 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [825274264] [2021-10-13 07:25:17,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:17,280 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-10-13 07:25:17,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/cvc4 [2021-10-13 07:25:17,281 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-10-13 07:25:17,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-10-13 07:25:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:17,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-13 07:25:17,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:17,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:17,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:17,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:17,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [825274264] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:17,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910499885] [2021-10-13 07:25:17,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 07:25:17,974 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-13 07:25:17,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 07:25:17,982 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-13 07:25:17,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-13 07:25:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 07:25:18,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-13 07:25:18,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-13 07:25:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:18,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-13 07:25:18,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 07:25:18,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910499885] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-13 07:25:18,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-10-13 07:25:18,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 9 [2021-10-13 07:25:18,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036427972] [2021-10-13 07:25:18,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-13 07:25:18,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-13 07:25:18,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-13 07:25:18,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-13 07:25:18,542 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:18,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 07:25:18,858 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-13 07:25:18,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-13 07:25:18,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-13 07:25:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 07:25:18,859 INFO L225 Difference]: With dead ends: 9 [2021-10-13 07:25:18,859 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 07:25:18,859 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 829.5ms TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-10-13 07:25:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 07:25:18,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 07:25:18,860 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) [2021-10-13 07:25:18,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 07:25:18,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-13 07:25:18,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 07:25:18,861 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 07:25:18,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-13 07:25:18,861 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 07:25:18,861 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 07:25:18,864 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 07:25:18,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:19,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-10-13 07:25:19,274 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-13 07:25:19,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/mathsat -unsat_core_generation=3 [2021-10-13 07:25:19,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 07:25:19,471 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:19,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 07:25:19,531 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 07:25:19,531 INFO L857 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-13 07:25:19,531 INFO L857 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2021-10-13 07:25:19,531 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 07:25:19,531 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 07:25:19,531 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 07:25:19,532 INFO L860 garLoopResultBuilder]: At program point L26(lines 19 27) the Hoare annotation is: true [2021-10-13 07:25:19,532 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2021-10-13 07:25:19,532 INFO L853 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (or (let ((.cse0 (bvadd (_ bv4294967295 32) ULTIMATE.start_main_~i~0))) (and (bvsgt .cse0 (_ bv4294967286 32)) (bvslt .cse0 (_ bv10 32)))) (and (bvslt ULTIMATE.start_main_~i~0 (_ bv10 32)) (bvsgt ULTIMATE.start_main_~i~0 (_ bv4294967286 32)))) [2021-10-13 07:25:19,532 INFO L857 garLoopResultBuilder]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2021-10-13 07:25:19,532 INFO L857 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2021-10-13 07:25:19,533 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 18) no Hoare annotation was computed. [2021-10-13 07:25:19,537 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 07:25:19,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 07:25:19 BoogieIcfgContainer [2021-10-13 07:25:19,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 07:25:19,550 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 07:25:19,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 07:25:19,550 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 07:25:19,551 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:25:14" (3/4) ... [2021-10-13 07:25:19,553 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 07:25:19,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-13 07:25:19,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 07:25:19,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:25:19,563 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 07:25:19,594 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 07:25:19,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 07:25:19,596 INFO L168 Benchmark]: Toolchain (without parser) took 5925.70 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 37.2 MB in the beginning and 36.7 MB in the end (delta: 465.5 kB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:19,597 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 40.3 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 07:25:19,597 INFO L168 Benchmark]: CACSL2BoogieTranslator took 213.88 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 27.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:19,598 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.57 ms. Allocated memory is still 58.7 MB. Free memory was 27.3 MB in the beginning and 41.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:19,598 INFO L168 Benchmark]: Boogie Preprocessor took 22.08 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:19,599 INFO L168 Benchmark]: RCFGBuilder took 464.98 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 31.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:19,600 INFO L168 Benchmark]: TraceAbstraction took 5123.33 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 31.3 MB in the beginning and 39.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:19,600 INFO L168 Benchmark]: Witness Printer took 44.82 ms. Allocated memory is still 81.8 MB. Free memory was 39.5 MB in the beginning and 36.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 07:25:19,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 58.7 MB. Free memory was 40.3 MB in the beginning and 40.3 MB in the end (delta: 73.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 213.88 ms. Allocated memory is still 58.7 MB. Free memory was 37.1 MB in the beginning and 27.3 MB in the end (delta: 9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.57 ms. Allocated memory is still 58.7 MB. Free memory was 27.3 MB in the beginning and 41.5 MB in the end (delta: -14.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.08 ms. Allocated memory is still 58.7 MB. Free memory was 41.5 MB in the beginning and 40.5 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 464.98 ms. Allocated memory is still 58.7 MB. Free memory was 40.5 MB in the beginning and 31.7 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5123.33 ms. Allocated memory was 58.7 MB in the beginning and 81.8 MB in the end (delta: 23.1 MB). Free memory was 31.3 MB in the beginning and 39.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Witness Printer took 44.82 ms. Allocated memory is still 81.8 MB. Free memory was 39.5 MB in the beginning and 36.7 MB in the end (delta: 2.7 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: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5028.5ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 30.7ms, AutomataDifference: 444.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 63.3ms, InitialAbstractionConstructionTime: 17.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 2 SDslu, 14 SDs, 0 SdLazy, 33 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 186.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 916.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 24.0ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 20 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 36.6ms HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 21.4ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 39.9ms SsaConstructionTime, 244.0ms SatisfiabilityAnalysisTime, 2742.9ms InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 66 ConstructedInterpolants, 0 QuantifiedInterpolants, 331 SizeOfPredicates, 9 NumberOfNonLiveVariables, 131 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 0/6 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 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (~bvsgt32(~bvadd64(4294967295bv32, i), 4294967286bv32) && ~bvslt32(~bvadd64(4294967295bv32, i), 10bv32)) || (~bvslt32(i, 10bv32) && ~bvsgt32(i, 4294967286bv32)) RESULT: Ultimate proved your program to be correct! [2021-10-13 07:25:19,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3cf390d-1e91-40b0-aba5-99f780c9200d/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...