./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan --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 cbc881c594b7bbae672c83bbb2c629f38e40bf15 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan --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 cbc881c594b7bbae672c83bbb2c629f38e40bf15 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:11:07,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:11:07,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:11:07,294 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:11:07,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:11:07,296 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:11:07,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:11:07,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:11:07,300 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:11:07,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:11:07,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:11:07,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:11:07,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:11:07,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:11:07,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:11:07,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:11:07,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:11:07,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:11:07,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:11:07,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:11:07,312 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:11:07,313 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:11:07,314 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:11:07,314 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:11:07,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:11:07,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:11:07,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:11:07,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:11:07,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:11:07,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:11:07,320 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:11:07,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:11:07,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:11:07,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:11:07,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:11:07,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:11:07,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:11:07,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:11:07,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:11:07,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:11:07,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:11:07,326 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 14:11:07,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:11:07,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:11:07,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:11:07,343 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:11:07,343 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:11:07,343 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:11:07,343 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 14:11:07,343 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:11:07,343 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:11:07,343 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 14:11:07,344 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 14:11:07,344 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:11:07,344 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 14:11:07,344 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 14:11:07,344 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 14:11:07,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:11:07,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:11:07,346 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:11:07,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:11:07,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:11:07,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:11:07,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:11:07,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:11:07,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:11:07,346 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:11:07,346 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 14:11:07,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 14:11:07,347 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:11:07,347 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:11:07,347 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:11:07,347 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-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbc881c594b7bbae672c83bbb2c629f38e40bf15 [2020-12-09 14:11:07,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:11:07,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:11:07,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:11:07,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:11:07,546 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:11:07,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-12-09 14:11:07,586 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/120084ef7/3c5875be78c346f5adb1771d5cbb37ca/FLAG5f7b42f5d [2020-12-09 14:11:07,942 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:11:07,942 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-12-09 14:11:07,948 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/120084ef7/3c5875be78c346f5adb1771d5cbb37ca/FLAG5f7b42f5d [2020-12-09 14:11:07,960 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/120084ef7/3c5875be78c346f5adb1771d5cbb37ca [2020-12-09 14:11:07,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:11:07,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:11:07,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:11:07,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:11:07,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:11:07,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:11:07" (1/1) ... [2020-12-09 14:11:07,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d4fff38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:07, skipping insertion in model container [2020-12-09 14:11:07,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:11:07" (1/1) ... [2020-12-09 14:11:07,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:11:07,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:11:08,082 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c[520,533] [2020-12-09 14:11:08,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:11:08,099 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:11:08,107 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c[520,533] [2020-12-09 14:11:08,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:11:08,121 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:11:08,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08 WrapperNode [2020-12-09 14:11:08,122 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:11:08,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:11:08,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:11:08,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:11:08,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,133 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:11:08,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:11:08,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:11:08,147 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:11:08,152 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... [2020-12-09 14:11:08,162 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:11:08,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:11:08,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:11:08,163 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:11:08,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:11:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 14:11:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:11:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:11:08,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:11:08,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:11:08,443 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 14:11:08,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:11:08 BoogieIcfgContainer [2020-12-09 14:11:08,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:11:08,447 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:11:08,447 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:11:08,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:11:08,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:11:07" (1/3) ... [2020-12-09 14:11:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad14b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:11:08, skipping insertion in model container [2020-12-09 14:11:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:11:08" (2/3) ... [2020-12-09 14:11:08,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad14b8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:11:08, skipping insertion in model container [2020-12-09 14:11:08,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:11:08" (3/3) ... [2020-12-09 14:11:08,454 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound10.c [2020-12-09 14:11:08,467 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:11:08,471 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 14:11:08,481 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 14:11:08,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:11:08,504 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:11:08,504 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:11:08,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:11:08,504 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:11:08,504 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:11:08,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:11:08,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:11:08,518 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 14:11:08,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 14:11:08,522 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:11:08,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 14:11:08,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:11:08,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:11:08,527 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 14:11:08,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:11:08,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661019595] [2020-12-09 14:11:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:11:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:11:08,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:11:08,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661019595] [2020-12-09 14:11:08,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:11:08,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:11:08,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733108104] [2020-12-09 14:11:08,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 14:11:08,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:11:08,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 14:11:08,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:11:08,659 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 14:11:08,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:11:08,672 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 14:11:08,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 14:11:08,673 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 14:11:08,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:11:08,679 INFO L225 Difference]: With dead ends: 57 [2020-12-09 14:11:08,680 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 14:11:08,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:11:08,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 14:11:08,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 14:11:08,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 14:11:08,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 14:11:08,713 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 14:11:08,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:11:08,713 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 14:11:08,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 14:11:08,713 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 14:11:08,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 14:11:08,714 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:11:08,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 14:11:08,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 14:11:08,715 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:11:08,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:11:08,716 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 14:11:08,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:11:08,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561807088] [2020-12-09 14:11:08,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:11:08,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:11:08,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:11:08,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561807088] [2020-12-09 14:11:08,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:11:08,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 14:11:08,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337798641] [2020-12-09 14:11:08,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:11:08,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:11:08,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:11:08,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:11:08,818 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-12-09 14:11:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:11:08,896 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 14:11:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:11:08,897 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 14:11:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:11:08,898 INFO L225 Difference]: With dead ends: 30 [2020-12-09 14:11:08,898 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 14:11:08,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:11:08,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 14:11:08,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-09 14:11:08,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 14:11:08,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 14:11:08,904 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-12-09 14:11:08,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:11:08,905 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 14:11:08,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:11:08,905 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 14:11:08,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 14:11:08,905 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:11:08,905 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:11:08,906 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 14:11:08,906 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:11:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:11:08,907 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2020-12-09 14:11:08,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:11:08,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236353742] [2020-12-09 14:11:08,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:11:08,923 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 14:11:08,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591896671] [2020-12-09 14:11:08,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:11:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:11:08,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 14:11:08,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:11:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:11:09,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:11:09,066 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:11:09,066 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:11:09,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:11:09,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236353742] [2020-12-09 14:11:09,086 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:11:09,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591896671] [2020-12-09 14:11:09,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:11:09,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 14:11:09,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326236787] [2020-12-09 14:11:09,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 14:11:09,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:11:09,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 14:11:09,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 14:11:09,089 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 10 states. [2020-12-09 14:11:11,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:11:11,222 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-12-09 14:11:11,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 14:11:11,222 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 14:11:11,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:11:11,223 INFO L225 Difference]: With dead ends: 58 [2020-12-09 14:11:11,223 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 14:11:11,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=61, Invalid=95, Unknown=0, NotChecked=0, Total=156 [2020-12-09 14:11:11,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 14:11:11,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2020-12-09 14:11:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 14:11:11,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-12-09 14:11:11,229 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 7 [2020-12-09 14:11:11,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:11:11,229 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-12-09 14:11:11,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 14:11:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-12-09 14:11:11,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 14:11:11,230 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:11:11,230 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 14:11:11,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 14:11:11,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:11:11,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:11:11,433 INFO L82 PathProgramCache]: Analyzing trace with hash 874023160, now seen corresponding path program 1 times [2020-12-09 14:11:11,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:11:11,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631687035] [2020-12-09 14:11:11,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:11:11,446 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 14:11:11,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114912466] [2020-12-09 14:11:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:11:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:11:11,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 14:11:11,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:11:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:11:11,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:11:11,592 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:11:11,592 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:11:18,185 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 5 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:11:18,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631687035] [2020-12-09 14:11:18,185 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:11:18,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114912466] [2020-12-09 14:11:18,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2103459857] [2020-12-09 14:11:18,199 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 14:11:18,199 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 14:11:18,202 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 14:11:18,206 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 14:11:18,206 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 14:11:18,879 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 14:11:19,396 WARN L197 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 14:11:19,899 WARN L197 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 14:11:20,263 WARN L197 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-12-09 14:11:20,607 WARN L197 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 100 [2020-12-09 14:11:21,003 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:11:21,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 14:11:21,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 14:11:21,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337804668] [2020-12-09 14:11:21,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 14:11:21,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:11:21,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 14:11:21,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=338, Unknown=3, NotChecked=0, Total=420 [2020-12-09 14:11:21,005 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 12 states. [2020-12-09 14:11:29,180 WARN L197 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 14:11:35,328 WARN L197 SmtUtils]: Spent 6.07 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 14:11:41,390 WARN L197 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 14:14:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:14:17,338 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-12-09 14:14:17,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 14:14:17,344 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 14:14:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:14:17,345 INFO L225 Difference]: With dead ends: 97 [2020-12-09 14:14:17,345 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 14:14:17,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 47.3s TimeCoverageRelationStatistics Valid=184, Invalid=674, Unknown=12, NotChecked=0, Total=870 [2020-12-09 14:14:17,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 14:14:17,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 58. [2020-12-09 14:14:17,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-12-09 14:14:17,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2020-12-09 14:14:17,353 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 17 [2020-12-09 14:14:17,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:14:17,353 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2020-12-09 14:14:17,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 14:14:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2020-12-09 14:14:17,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 14:14:17,353 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:17,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2020-12-09 14:14:17,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:14:17,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:17,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:17,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1973720903, now seen corresponding path program 1 times [2020-12-09 14:14:17,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:14:17,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968493324] [2020-12-09 14:14:17,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:14:17,586 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 14:14:17,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [98975199] [2020-12-09 14:14:17,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:14:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:17,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 14:14:17,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:17,695 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:17,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:17,798 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 14:14:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968493324] [2020-12-09 14:14:17,798 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:14:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98975199] [2020-12-09 14:14:17,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1705647866] [2020-12-09 14:14:17,800 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 14:14:17,800 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 14:14:17,801 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 14:14:17,801 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 14:14:17,801 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 14:14:18,267 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 14:14:18,780 WARN L197 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 14:14:19,245 WARN L197 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 14:14:19,677 WARN L197 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-12-09 14:14:20,085 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 88 [2020-12-09 14:14:20,523 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:14:20,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 14:14:20,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 14:14:20,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886932603] [2020-12-09 14:14:20,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 14:14:20,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 14:14:20,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 14:14:20,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-12-09 14:14:20,525 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 12 states. [2020-12-09 14:14:28,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:14:28,800 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2020-12-09 14:14:28,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 14:14:28,800 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-12-09 14:14:28,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:14:28,801 INFO L225 Difference]: With dead ends: 62 [2020-12-09 14:14:28,801 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 14:14:28,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2020-12-09 14:14:28,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 14:14:28,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-09 14:14:28,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 14:14:28,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-09 14:14:28,807 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 23 [2020-12-09 14:14:28,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:14:28,807 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-09 14:14:28,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 14:14:28,807 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-09 14:14:28,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 14:14:28,808 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:28,808 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 14:14:29,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2020-12-09 14:14:29,009 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:29,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:29,010 INFO L82 PathProgramCache]: Analyzing trace with hash 2062983086, now seen corresponding path program 2 times [2020-12-09 14:14:29,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 14:14:29,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346713545] [2020-12-09 14:14:29,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 14:14:29,023 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 14:14:29,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052610288] [2020-12-09 14:14:29,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:14:29,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 14:14:29,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 14:14:29,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 14:14:29,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 14:14:29,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:39,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346713545] [2020-12-09 14:14:39,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:14:39,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052610288] [2020-12-09 14:14:39,359 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 14:14:39,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2041987269] [2020-12-09 14:14:39,361 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 14:14:39,361 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 14:14:39,361 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 14:14:39,361 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 14:14:39,361 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 14:14:39,764 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 14:14:40,958 WARN L197 SmtUtils]: Spent 355.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 94 [2020-12-09 14:14:41,461 WARN L197 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 87 [2020-12-09 14:14:41,932 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 94 [2020-12-09 14:14:42,379 WARN L197 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 87 [2020-12-09 14:14:46,863 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 14:14:46,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:14:46,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 14:14:46,863 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 14:14:46,863 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 14:14:47,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:14:47,105 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 14:14:47,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 02:14:47 BoogieIcfgContainer [2020-12-09 14:14:47,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 14:14:47,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 14:14:47,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 14:14:47,106 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 14:14:47,106 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:11:08" (3/4) ... [2020-12-09 14:14:47,109 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 14:14:47,109 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 14:14:47,110 INFO L168 Benchmark]: Toolchain (without parser) took 219146.69 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 45.7 MB in the beginning and 57.8 MB in the end (delta: -12.0 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:14:47,111 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:14:47,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.90 ms. Allocated memory is still 86.0 MB. Free memory was 45.6 MB in the beginning and 57.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:14:47,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.58 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 56.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:14:47,112 INFO L168 Benchmark]: Boogie Preprocessor took 15.11 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 55.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:14:47,113 INFO L168 Benchmark]: RCFGBuilder took 283.31 ms. Allocated memory is still 86.0 MB. Free memory was 54.9 MB in the beginning and 55.4 MB in the end (delta: -409.3 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:14:47,114 INFO L168 Benchmark]: TraceAbstraction took 218658.04 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 54.7 MB in the beginning and 58.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-12-09 14:14:47,114 INFO L168 Benchmark]: Witness Printer took 3.78 ms. Allocated memory is still 104.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:14:47,117 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 86.0 MB. Free memory is still 61.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 157.90 ms. Allocated memory is still 86.0 MB. Free memory was 45.6 MB in the beginning and 57.8 MB in the end (delta: -12.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 23.58 ms. Allocated memory is still 86.0 MB. Free memory was 57.6 MB in the beginning and 56.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.11 ms. Allocated memory is still 86.0 MB. Free memory was 56.2 MB in the beginning and 55.2 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 283.31 ms. Allocated memory is still 86.0 MB. Free memory was 54.9 MB in the beginning and 55.4 MB in the end (delta: -409.3 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 218658.04 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 54.7 MB in the beginning and 58.4 MB in the end (delta: -3.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Witness Printer took 3.78 ms. Allocated memory is still 104.9 MB. Free memory is still 57.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<10 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 218.5s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 186.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 320 SDslu, 136 SDs, 0 SdLazy, 312 SolverSat, 260 SolverUnsat, 43 SolverUnknown, 0 SolverNotchecked, 147.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 336 ImplicationChecksByTransitivity, 49.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 22 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 19544 SizeOfPredicates, 18 NumberOfNonLiveVariables, 260 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 13/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 14:14:48,639 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 14:14:48,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 14:14:48,663 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 14:14:48,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 14:14:48,664 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 14:14:48,666 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 14:14:48,668 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 14:14:48,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 14:14:48,670 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 14:14:48,671 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 14:14:48,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 14:14:48,672 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 14:14:48,673 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 14:14:48,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 14:14:48,675 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 14:14:48,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 14:14:48,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 14:14:48,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 14:14:48,681 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 14:14:48,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 14:14:48,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 14:14:48,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 14:14:48,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 14:14:48,688 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 14:14:48,688 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 14:14:48,689 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 14:14:48,689 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 14:14:48,690 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 14:14:48,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 14:14:48,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 14:14:48,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 14:14:48,692 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 14:14:48,693 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 14:14:48,694 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 14:14:48,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 14:14:48,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 14:14:48,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 14:14:48,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 14:14:48,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 14:14:48,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 14:14:48,698 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 14:14:48,721 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 14:14:48,721 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 14:14:48,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 14:14:48,722 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 14:14:48,722 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 14:14:48,722 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 14:14:48,722 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 14:14:48,722 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 14:14:48,722 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 14:14:48,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 14:14:48,723 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 14:14:48,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 14:14:48,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 14:14:48,724 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 14:14:48,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 14:14:48,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 14:14:48,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 14:14:48,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 14:14:48,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 14:14:48,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 14:14:48,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 14:14:48,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 14:14:48,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 14:14:48,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 14:14:48,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 14:14:48,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 14:14:48,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:14:48,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 14:14:48,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 14:14:48,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 14:14:48,726 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 14:14:48,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 14:14:48,726 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 14:14:48,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 14:14:48,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 14:14:48,727 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-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cbc881c594b7bbae672c83bbb2c629f38e40bf15 [2020-12-09 14:14:48,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 14:14:48,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 14:14:48,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 14:14:48,975 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 14:14:48,975 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 14:14:48,976 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-12-09 14:14:49,018 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/794fd435a/23713b8d536348ca9969d45f98506a87/FLAG51b68a14b [2020-12-09 14:14:49,371 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 14:14:49,372 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c [2020-12-09 14:14:49,377 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/794fd435a/23713b8d536348ca9969d45f98506a87/FLAG51b68a14b [2020-12-09 14:14:49,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/data/794fd435a/23713b8d536348ca9969d45f98506a87 [2020-12-09 14:14:49,388 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 14:14:49,389 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 14:14:49,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 14:14:49,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 14:14:49,392 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 14:14:49,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,394 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13a90b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49, skipping insertion in model container [2020-12-09 14:14:49,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 14:14:49,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 14:14:49,501 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c[520,533] [2020-12-09 14:14:49,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:14:49,521 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 14:14:49,538 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound10.c[520,533] [2020-12-09 14:14:49,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 14:14:49,559 INFO L208 MainTranslator]: Completed translation [2020-12-09 14:14:49,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49 WrapperNode [2020-12-09 14:14:49,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 14:14:49,560 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 14:14:49,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 14:14:49,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 14:14:49,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,572 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 14:14:49,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 14:14:49,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 14:14:49,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 14:14:49,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,595 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... [2020-12-09 14:14:49,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 14:14:49,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 14:14:49,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 14:14:49,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 14:14:49,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 14:14:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 14:14:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 14:14:49,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 14:14:49,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 14:14:50,086 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 14:14:50,086 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 14:14:50,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:14:50 BoogieIcfgContainer [2020-12-09 14:14:50,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 14:14:50,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 14:14:50,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 14:14:50,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 14:14:50,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 02:14:49" (1/3) ... [2020-12-09 14:14:50,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2936ac64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:14:50, skipping insertion in model container [2020-12-09 14:14:50,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 02:14:49" (2/3) ... [2020-12-09 14:14:50,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2936ac64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 02:14:50, skipping insertion in model container [2020-12-09 14:14:50,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 02:14:50" (3/3) ... [2020-12-09 14:14:50,094 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound10.c [2020-12-09 14:14:50,104 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 14:14:50,106 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 14:14:50,114 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 14:14:50,134 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 14:14:50,134 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 14:14:50,134 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 14:14:50,134 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 14:14:50,134 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 14:14:50,135 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 14:14:50,135 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 14:14:50,135 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 14:14:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 14:14:50,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 14:14:50,148 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:50,148 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 14:14:50,148 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:50,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:50,152 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 14:14:50,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:14:50,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974156684] [2020-12-09 14:14:50,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 14:14:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:50,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 14:14:50,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:50,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:50,232 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:14:50,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974156684] [2020-12-09 14:14:50,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:14:50,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 14:14:50,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987552578] [2020-12-09 14:14:50,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 14:14:50,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:14:50,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 14:14:50,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:14:50,248 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 14:14:50,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:14:50,261 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 14:14:50,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 14:14:50,262 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 14:14:50,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:14:50,267 INFO L225 Difference]: With dead ends: 62 [2020-12-09 14:14:50,268 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 14:14:50,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 14:14:50,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 14:14:50,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 14:14:50,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 14:14:50,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 14:14:50,295 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 14:14:50,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:14:50,296 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 14:14:50,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 14:14:50,296 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 14:14:50,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 14:14:50,296 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:50,296 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 14:14:50,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 14:14:50,499 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:50,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:50,501 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 14:14:50,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:14:50,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530019027] [2020-12-09 14:14:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 14:14:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:50,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 14:14:50,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:50,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:14:50,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530019027] [2020-12-09 14:14:50,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:14:50,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:14:50,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712460039] [2020-12-09 14:14:50,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:14:50,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:14:50,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:14:50,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:14:50,733 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-09 14:14:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:14:51,194 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-09 14:14:51,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:14:51,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 14:14:51,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:14:51,202 INFO L225 Difference]: With dead ends: 54 [2020-12-09 14:14:51,202 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 14:14:51,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:14:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 14:14:51,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 14:14:51,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 14:14:51,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-09 14:14:51,210 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-09 14:14:51,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:14:51,211 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-09 14:14:51,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:14:51,211 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-09 14:14:51,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 14:14:51,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:51,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:14:51,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 14:14:51,413 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:51,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:51,415 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 14:14:51,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:14:51,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [429231706] [2020-12-09 14:14:51,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 14:14:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:51,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 14:14:51,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:51,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:51,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:14:51,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [429231706] [2020-12-09 14:14:51,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:14:51,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:14:51,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395053035] [2020-12-09 14:14:51,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:14:51,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:14:51,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:14:51,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:14:51,523 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-12-09 14:14:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:14:51,989 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-12-09 14:14:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 14:14:51,990 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 14:14:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:14:51,991 INFO L225 Difference]: With dead ends: 50 [2020-12-09 14:14:51,991 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 14:14:51,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:14:51,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 14:14:51,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 14:14:51,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 14:14:51,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-09 14:14:51,996 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-12-09 14:14:51,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:14:51,996 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-09 14:14:51,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:14:51,996 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-09 14:14:51,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 14:14:51,996 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:51,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:14:52,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 14:14:52,198 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:52,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:52,198 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 14:14:52,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:14:52,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696050381] [2020-12-09 14:14:52,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 14:14:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:52,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 14:14:52,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:52,378 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 14:14:52,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696050381] [2020-12-09 14:14:52,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 14:14:52,379 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 14:14:52,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094499435] [2020-12-09 14:14:52,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 14:14:52,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:14:52,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 14:14:52,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 14:14:52,380 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-12-09 14:14:52,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:14:52,905 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-12-09 14:14:52,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 14:14:52,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 14:14:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:14:52,907 INFO L225 Difference]: With dead ends: 50 [2020-12-09 14:14:52,907 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 14:14:52,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 14:14:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 14:14:52,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-09 14:14:52,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 14:14:52,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 14:14:52,911 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-12-09 14:14:52,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:14:52,911 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 14:14:52,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 14:14:52,911 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 14:14:52,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 14:14:52,912 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:52,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:14:53,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 14:14:53,114 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:53,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:53,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-09 14:14:53,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:14:53,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1052472406] [2020-12-09 14:14:53,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 14:14:53,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:53,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:14:53,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:53,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:53,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 14:14:53,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1052472406] [2020-12-09 14:14:53,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1930034556] [2020-12-09 14:14:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 14:14:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:53,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:14:53,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:53,594 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:53,595 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:53,653 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 14:14:53,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026303349] [2020-12-09 14:14:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:14:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:53,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 14:14:53,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:53,828 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:53,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:53,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 14:14:53,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 5] total 9 [2020-12-09 14:14:53,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179211671] [2020-12-09 14:14:53,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 14:14:53,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:14:53,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 14:14:53,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 14:14:53,912 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-12-09 14:14:54,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:14:54,687 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-09 14:14:54,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 14:14:54,688 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 14:14:54,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:14:54,689 INFO L225 Difference]: With dead ends: 58 [2020-12-09 14:14:54,689 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 14:14:54,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-09 14:14:54,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 14:14:54,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2020-12-09 14:14:54,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 14:14:54,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-09 14:14:54,693 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 14 [2020-12-09 14:14:54,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:14:54,694 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-09 14:14:54,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 14:14:54,694 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-09 14:14:54,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 14:14:54,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:14:54,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:14:55,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:14:55,297 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:14:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:14:55,298 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-09 14:14:55,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:14:55,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1177426465] [2020-12-09 14:14:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 14:14:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:55,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:14:55,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:55,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:56,226 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 14:14:56,898 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 14:14:56,916 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:56,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1177426465] [2020-12-09 14:14:56,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [731126247] [2020-12-09 14:14:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt [2020-12-09 14:14:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:57,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:14:57,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:57,163 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:57,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:57,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:57,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028675950] [2020-12-09 14:14:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:14:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:14:57,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 14:14:57,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:14:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:14:57,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:14:58,361 WARN L197 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 14:14:58,370 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:14:58,370 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:15:01,310 WARN L197 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 14:15:08,275 WARN L197 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 14:15:17,192 WARN L197 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 14:15:17,198 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:15:17,198 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:15:19,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 14:15:19,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 14:15:19,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 8] total 15 [2020-12-09 14:15:19,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640647531] [2020-12-09 14:15:19,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-09 14:15:19,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:15:19,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-09 14:15:19,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=135, Unknown=8, NotChecked=0, Total=210 [2020-12-09 14:15:19,780 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 15 states. [2020-12-09 14:15:30,870 WARN L197 SmtUtils]: Spent 8.93 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 14:15:45,920 WARN L197 SmtUtils]: Spent 9.07 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 14:16:01,299 WARN L197 SmtUtils]: Spent 9.42 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 14:16:26,058 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 14:16:53,788 WARN L197 SmtUtils]: Spent 12.47 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 14:17:07,236 WARN L197 SmtUtils]: Spent 8.52 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 14:17:24,463 WARN L197 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 14:17:44,235 WARN L197 SmtUtils]: Spent 8.46 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 14:17:58,837 WARN L197 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 14:18:18,198 WARN L197 SmtUtils]: Spent 10.40 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 14:18:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:18:24,525 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-12-09 14:18:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 14:18:24,533 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-12-09 14:18:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:18:24,534 INFO L225 Difference]: With dead ends: 75 [2020-12-09 14:18:24,534 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 14:18:24,535 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 133.0s TimeCoverageRelationStatistics Valid=217, Invalid=409, Unknown=24, NotChecked=0, Total=650 [2020-12-09 14:18:24,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 14:18:24,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2020-12-09 14:18:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 14:18:24,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 14:18:24,541 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 16 [2020-12-09 14:18:24,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:18:24,541 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 14:18:24,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-09 14:18:24,541 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 14:18:24,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 14:18:24,541 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:18:24,542 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-09 14:18:25,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3,10 cvc4 --incremental --print-success --lang smt,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:18:25,145 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:18:25,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:18:25,146 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-09 14:18:25,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:18:25,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1798242514] [2020-12-09 14:18:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 14:18:25,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:18:25,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:18:25,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:18:25,505 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:18:25,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:18:26,186 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 14:18:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 14:18:27,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1798242514] [2020-12-09 14:18:27,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1497298691] [2020-12-09 14:18:27,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt [2020-12-09 14:18:27,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:18:27,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 14:18:27,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:18:28,006 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:18:28,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:18:29,228 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-09 14:18:29,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271252636] [2020-12-09 14:18:29,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:18:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:18:29,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 14:18:29,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:18:30,091 WARN L197 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 22 [2020-12-09 14:18:30,397 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-12-09 14:18:30,634 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 24 [2020-12-09 14:18:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:18:30,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:18:31,436 WARN L197 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 14:18:31,441 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:18:31,441 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:18:35,658 WARN L197 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 14:18:40,224 WARN L197 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 14:18:40,230 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:18:40,230 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:18:42,364 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 14:18:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 14:18:42,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 14:18:42,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6, 4, 6, 4, 11] total 19 [2020-12-09 14:18:42,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532041858] [2020-12-09 14:18:42,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:18:42,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:18:42,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:18:42,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=209, Unknown=1, NotChecked=32, Total=342 [2020-12-09 14:18:42,384 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 8 states. [2020-12-09 14:18:43,735 WARN L197 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 14:19:04,398 WARN L197 SmtUtils]: Spent 9.79 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 14:19:10,500 WARN L197 SmtUtils]: Spent 2.64 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 14:19:14,306 WARN L197 SmtUtils]: Spent 2.39 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 14:19:19,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:19:19,308 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-12-09 14:19:19,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 14:19:19,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-09 14:19:19,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:19:19,309 INFO L225 Difference]: With dead ends: 44 [2020-12-09 14:19:19,309 INFO L226 Difference]: Without dead ends: 34 [2020-12-09 14:19:19,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 124 SyntacticMatches, 10 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=147, Invalid=316, Unknown=3, NotChecked=40, Total=506 [2020-12-09 14:19:19,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-12-09 14:19:19,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-12-09 14:19:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 14:19:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-12-09 14:19:19,315 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 26 [2020-12-09 14:19:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:19:19,315 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-12-09 14:19:19,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:19:19,315 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-12-09 14:19:19,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 14:19:19,315 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 14:19:19,315 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 14:19:19,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,13 cvc4 --incremental --print-success --lang smt,12 mathsat -unsat_core_generation=3 [2020-12-09 14:19:19,919 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 14:19:19,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 14:19:19,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1772370605, now seen corresponding path program 1 times [2020-12-09 14:19:19,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 14:19:19,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513267271] [2020-12-09 14:19:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 14:19:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:19:20,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:19:20,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:19:20,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:19:20,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:19:20,385 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:19:20,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513267271] [2020-12-09 14:19:20,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2084419833] [2020-12-09 14:19:20,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/cvc4 Starting monitored process 16 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with cvc4 --incremental --print-success --lang smt [2020-12-09 14:19:20,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:19:20,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 14:19:20,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:19:20,813 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:19:20,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:19:20,833 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:19:20,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119243422] [2020-12-09 14:19:20,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e341fb8f-5c16-4969-8bb1-ed490a5bac6b/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:19:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 14:19:21,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-09 14:19:21,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 14:19:22,575 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 14:19:22,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 14:19:24,767 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 14:19:26,268 WARN L197 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 14:19:26,272 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:19:26,273 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:19:32,434 WARN L197 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 14:19:40,156 WARN L197 SmtUtils]: Spent 2.33 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 14:19:40,161 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 14:19:40,161 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 14:19:42,385 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse1 ((_ sign_extend 32) (_ bv2 32)))) (or (not (= c_ULTIMATE.start_main_~s~0 (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 64) (bvmul .cse0 c_ULTIMATE.start_main_~a~0))))) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) c_ULTIMATE.start_main_~s~0)) (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0) (bvmul c_ULTIMATE.start_main_~t~0 .cse1) .cse0)) (not (= (bvadd .cse0 (bvmul c_ULTIMATE.start_main_~a~0 .cse1)) c_ULTIMATE.start_main_~t~0)))) is different from true [2020-12-09 14:19:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 14:19:42,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 5 imperfect interpolant sequences. [2020-12-09 14:19:42,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [5, 5, 5, 5, 11] total 25 [2020-12-09 14:19:42,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723395592] [2020-12-09 14:19:42,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 14:19:42,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 14:19:42,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 14:19:42,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=445, Unknown=1, NotChecked=44, Total=600 [2020-12-09 14:19:42,406 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 8 states. [2020-12-09 14:19:44,369 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 14:20:03,941 WARN L197 SmtUtils]: Spent 9.31 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 14:20:10,422 WARN L197 SmtUtils]: Spent 2.71 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 14:20:18,054 WARN L197 SmtUtils]: Spent 1.80 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 14:20:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 14:20:19,038 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-09 14:20:19,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 14:20:19,045 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-12-09 14:20:19,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 14:20:19,045 INFO L225 Difference]: With dead ends: 28 [2020-12-09 14:20:19,045 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 14:20:19,046 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 132 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 50.7s TimeCoverageRelationStatistics Valid=155, Invalid=602, Unknown=3, NotChecked=52, Total=812 [2020-12-09 14:20:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 14:20:19,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 14:20:19,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 14:20:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 14:20:19,046 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-12-09 14:20:19,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 14:20:19,046 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 14:20:19,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 14:20:19,047 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 14:20:19,047 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 14:20:19,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 cvc4 --incremental --print-success --lang smt,15 mathsat -unsat_core_generation=3,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 14:20:19,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 14:20:48,064 WARN L197 SmtUtils]: Spent 28.29 s on a formula simplification. DAG size of input: 72 DAG size of output: 37 [2020-12-09 14:21:11,204 WARN L197 SmtUtils]: Spent 23.13 s on a formula simplification. DAG size of input: 74 DAG size of output: 38 [2020-12-09 14:21:27,015 WARN L197 SmtUtils]: Spent 15.81 s on a formula simplification. DAG size of input: 70 DAG size of output: 39 [2020-12-09 14:21:55,657 WARN L197 SmtUtils]: Spent 28.64 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 14:22:11,153 WARN L197 SmtUtils]: Spent 15.50 s on a formula simplification. DAG size of input: 69 DAG size of output: 37 [2020-12-09 14:22:30,221 WARN L197 SmtUtils]: Spent 19.07 s on a formula simplification. DAG size of input: 69 DAG size of output: 35 [2020-12-09 14:22:30,223 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 14:22:30,223 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 14:22:30,223 INFO L265 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-09 14:22:30,223 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 (bvmul ULTIMATE.start_main_~a~0 .cse2)) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (and (= (bvadd .cse0 .cse1) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul (bvmul .cse0 .cse0) (_ bv4 64)) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv4 64))) (bvadd .cse0 ULTIMATE.start_main_~s~0 (bvmul .cse0 .cse2) .cse1)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0)))))) [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 14:22:30,224 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse1 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse1)) ULTIMATE.start_main_~t~0) (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) (= ((_ sign_extend 32) (_ bv0 32)) (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse1) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (let ((.cse2 ((_ sign_extend 32) (_ bv2 32)))) (and (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse2)) ULTIMATE.start_main_~t~0) (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) (= .cse1 (bvadd (bvmul ULTIMATE.start_main_~t~0 .cse2) .cse0 (bvneg (bvmul ((_ sign_extend 32) (_ bv4 32)) ULTIMATE.start_main_~s~0)) (bvmul ULTIMATE.start_main_~t~0 ULTIMATE.start_main_~t~0))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64)))))))) [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-09 14:22:30,225 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 14:22:30,230 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:796) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:283) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:240) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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) [2020-12-09 14:22:30,232 INFO L168 Benchmark]: Toolchain (without parser) took 460843.05 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 35.9 MB in the beginning and 49.7 MB in the end (delta: -13.7 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:30,233 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:22:30,233 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.33 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 39.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:30,234 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.04 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 14:22:30,234 INFO L168 Benchmark]: Boogie Preprocessor took 19.05 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 36.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:30,235 INFO L168 Benchmark]: RCFGBuilder took 482.04 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 36.6 MB in the beginning and 52.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:30,235 INFO L168 Benchmark]: TraceAbstraction took 460142.65 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 49.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. [2020-12-09 14:22:30,238 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 56.6 MB. Free memory was 38.9 MB in the beginning and 38.8 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 170.33 ms. Allocated memory is still 56.6 MB. Free memory was 35.6 MB in the beginning and 39.6 MB in the end (delta: -3.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.04 ms. Allocated memory is still 56.6 MB. Free memory was 39.6 MB in the beginning and 38.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.05 ms. Allocated memory is still 56.6 MB. Free memory was 38.0 MB in the beginning and 36.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 482.04 ms. Allocated memory was 56.6 MB in the beginning and 71.3 MB in the end (delta: 14.7 MB). Free memory was 36.6 MB in the beginning and 52.0 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 460142.65 ms. Allocated memory is still 71.3 MB. Free memory was 51.4 MB in the beginning and 49.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 31.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 64) (_ BitVec 64)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:211) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...