./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.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_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 b4d247efd04e3e4cb2503f723a85cffc04db470c ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 b4d247efd04e3e4cb2503f723a85cffc04db470c .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:56:00,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:56:00,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:56:00,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:56:00,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:56:00,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:56:00,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:56:00,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:56:00,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:56:00,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:56:00,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:56:00,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:56:00,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:56:00,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:56:00,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:56:00,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:56:00,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:56:00,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:56:00,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:56:00,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:56:00,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:56:00,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:56:00,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:56:00,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:56:00,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:56:00,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:56:00,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:56:00,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:56:00,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:56:00,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:56:00,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:56:00,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:56:00,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:56:00,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:56:00,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:56:00,977 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:56:00,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:56:00,978 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:56:00,978 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:56:00,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:56:00,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:56:00,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 09:56:01,002 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:56:01,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:56:01,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:56:01,003 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:56:01,003 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:56:01,004 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:56:01,004 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:56:01,004 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:56:01,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:56:01,004 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:56:01,004 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:56:01,005 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:56:01,005 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:56:01,005 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:56:01,005 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:56:01,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:56:01,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:56:01,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:56:01,006 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:56:01,006 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:56:01,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:56:01,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:56:01,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:56:01,007 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:56:01,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:56:01,007 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:56:01,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:56:01,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:56:01,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:56:01,008 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:56:01,008 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:56:01,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:56:01,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:56:01,009 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:56:01,009 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:56:01,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:56:01,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:56:01,010 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:56:01,010 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:56:01,010 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_936c4ed1-4422-4321-85e4-34a10e40d194/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d247efd04e3e4cb2503f723a85cffc04db470c [2020-12-09 09:56:01,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:56:01,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:56:01,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:56:01,207 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:56:01,208 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:56:01,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2020-12-09 09:56:01,249 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/086451f06/2146a5e96b304006bae0321dc2609a91/FLAG98a2076b0 [2020-12-09 09:56:01,617 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:56:01,617 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2020-12-09 09:56:01,622 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/086451f06/2146a5e96b304006bae0321dc2609a91/FLAG98a2076b0 [2020-12-09 09:56:02,028 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/086451f06/2146a5e96b304006bae0321dc2609a91 [2020-12-09 09:56:02,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:56:02,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:56:02,032 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:56:02,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:56:02,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:56:02,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a596e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02, skipping insertion in model container [2020-12-09 09:56:02,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,043 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:56:02,055 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:56:02,147 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_936c4ed1-4422-4321-85e4-34a10e40d194/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2020-12-09 09:56:02,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:56:02,172 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:56:02,180 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_936c4ed1-4422-4321-85e4-34a10e40d194/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2020-12-09 09:56:02,191 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:56:02,201 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:56:02,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02 WrapperNode [2020-12-09 09:56:02,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:56:02,202 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:56:02,202 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:56:02,202 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:56:02,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:56:02,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:56:02,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:56:02,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:56:02,245 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,247 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... [2020-12-09 09:56:02,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:56:02,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:56:02,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:56:02,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:56:02,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:56:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 09:56:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:56:02,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:56:02,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:56:04,707 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:56:04,707 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-09 09:56:04,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:56:04 BoogieIcfgContainer [2020-12-09 09:56:04,709 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:56:04,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:56:04,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:56:04,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:56:04,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:56:02" (1/3) ... [2020-12-09 09:56:04,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a5f65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:56:04, skipping insertion in model container [2020-12-09 09:56:04,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:56:02" (2/3) ... [2020-12-09 09:56:04,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a5f65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:56:04, skipping insertion in model container [2020-12-09 09:56:04,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:56:04" (3/3) ... [2020-12-09 09:56:04,715 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2020-12-09 09:56:04,724 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:56:04,726 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-09 09:56:04,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-09 09:56:04,749 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:56:04,749 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:56:04,749 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:56:04,749 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:56:04,750 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:56:04,750 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:56:04,750 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:56:04,750 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:56:04,760 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-12-09 09:56:04,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 09:56:04,763 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:56:04,763 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 09:56:04,764 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:56:04,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:56:04,767 INFO L82 PathProgramCache]: Analyzing trace with hash 188617841, now seen corresponding path program 1 times [2020-12-09 09:56:04,773 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:56:04,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592093074] [2020-12-09 09:56:04,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:56:04,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:56:04,864 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 09:56:04,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592093074] [2020-12-09 09:56:04,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:56:04,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:56:04,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661421053] [2020-12-09 09:56:04,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 09:56:04,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:56:04,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 09:56:04,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 09:56:04,879 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-12-09 09:56:04,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:56:04,894 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2020-12-09 09:56:04,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 09:56:04,895 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 09:56:04,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:56:04,900 INFO L225 Difference]: With dead ends: 81 [2020-12-09 09:56:04,901 INFO L226 Difference]: Without dead ends: 40 [2020-12-09 09:56:04,903 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 09:56:04,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-12-09 09:56:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-12-09 09:56:04,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 09:56:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-12-09 09:56:04,927 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 5 [2020-12-09 09:56:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:56:04,927 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-12-09 09:56:04,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 09:56:04,927 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-12-09 09:56:04,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 09:56:04,927 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:56:04,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 09:56:04,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 09:56:04,932 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:56:04,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:56:04,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1426196737, now seen corresponding path program 1 times [2020-12-09 09:56:04,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:56:04,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550032973] [2020-12-09 09:56:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:56:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:56:05,135 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 09:56:05,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550032973] [2020-12-09 09:56:05,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:56:05,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:56:05,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554415506] [2020-12-09 09:56:05,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:56:05,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:56:05,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:56:05,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:56:05,138 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 5 states. [2020-12-09 09:56:37,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:56:37,399 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-12-09 09:56:37,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:56:37,399 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2020-12-09 09:56:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:56:37,400 INFO L225 Difference]: With dead ends: 56 [2020-12-09 09:56:37,400 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 09:56:37,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:56:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 09:56:37,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-12-09 09:56:37,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-12-09 09:56:37,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-12-09 09:56:37,407 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 6 [2020-12-09 09:56:37,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:56:37,407 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-12-09 09:56:37,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:56:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-12-09 09:56:37,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:56:37,408 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:56:37,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:56:37,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 09:56:37,408 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:56:37,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:56:37,409 INFO L82 PathProgramCache]: Analyzing trace with hash 480653316, now seen corresponding path program 1 times [2020-12-09 09:56:37,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:56:37,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796132899] [2020-12-09 09:56:37,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:56:37,419 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:56:37,420 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495118618] [2020-12-09 09:56:37,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:56:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:56:37,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 09:56:37,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:56:37,516 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 09:56:37,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:56:39,608 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~q~0 Int)) (= (mod (+ (* c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~p~0) (* c_ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~q~0)) 4294967296) (mod (* c_ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~q~0) 4294967296))) is different from true [2020-12-09 09:56:39,660 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 09:56:39,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796132899] [2020-12-09 09:56:39,661 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:56:39,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495118618] [2020-12-09 09:56:39,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:56:39,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 09:56:39,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960851260] [2020-12-09 09:56:39,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:56:39,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:56:39,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:56:39,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2020-12-09 09:56:39,662 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 6 states. [2020-12-09 09:56:58,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:56:58,510 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-12-09 09:56:58,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:56:58,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-12-09 09:56:58,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:56:58,512 INFO L225 Difference]: With dead ends: 82 [2020-12-09 09:56:58,512 INFO L226 Difference]: Without dead ends: 66 [2020-12-09 09:56:58,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=20, Invalid=25, Unknown=1, NotChecked=10, Total=56 [2020-12-09 09:56:58,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-12-09 09:56:58,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 59. [2020-12-09 09:56:58,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-09 09:56:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-12-09 09:56:58,523 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 8 [2020-12-09 09:56:58,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:56:58,523 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-12-09 09:56:58,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:56:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-12-09 09:56:58,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:56:58,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:56:58,524 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-12-09 09:56:58,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 09:56:58,725 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:56:58,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:56:58,726 INFO L82 PathProgramCache]: Analyzing trace with hash 522498748, now seen corresponding path program 1 times [2020-12-09 09:56:58,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:56:58,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004347286] [2020-12-09 09:56:58,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:56:58,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:56:58,908 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:56:58,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004347286] [2020-12-09 09:56:58,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981883177] [2020-12-09 09:56:58,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:56:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:56:58,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 09:56:58,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:56:59,005 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:56:59,008 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:56:59,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:56:59,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:56:59,050 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:56:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:56:59,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [280605034] [2020-12-09 09:56:59,126 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 09:56:59,126 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:56:59,129 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:56:59,133 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:56:59,133 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:56:59,421 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 09:57:00,154 WARN L197 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 69 [2020-12-09 09:57:00,923 WARN L197 SmtUtils]: Spent 690.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2020-12-09 09:57:01,843 WARN L197 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 88 [2020-12-09 09:57:01,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 09:57:01,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4, 4] total 12 [2020-12-09 09:57:01,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878674998] [2020-12-09 09:57:01,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:57:01,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:57:01,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:57:01,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-09 09:57:01,845 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 5 states. [2020-12-09 09:57:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:04,217 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2020-12-09 09:57:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 09:57:04,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-12-09 09:57:04,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:04,558 INFO L225 Difference]: With dead ends: 113 [2020-12-09 09:57:04,558 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 09:57:04,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-12-09 09:57:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 09:57:04,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2020-12-09 09:57:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 09:57:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-12-09 09:57:04,566 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 8 [2020-12-09 09:57:04,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:04,566 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-12-09 09:57:04,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:57:04,566 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-12-09 09:57:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 09:57:04,566 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:04,566 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:04,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:57:04,768 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:04,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:04,769 INFO L82 PathProgramCache]: Analyzing trace with hash -1443932613, now seen corresponding path program 1 times [2020-12-09 09:57:04,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:57:04,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139715777] [2020-12-09 09:57:04,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:57:04,794 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:57:04,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1467208657] [2020-12-09 09:57:04,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:04,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:04,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:57:04,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:04,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:04,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:04,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:04,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139715777] [2020-12-09 09:57:04,886 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:57:04,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467208657] [2020-12-09 09:57:04,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:57:04,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 3] imperfect sequences [] total 4 [2020-12-09 09:57:04,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378851412] [2020-12-09 09:57:04,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 09:57:04,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 09:57:04,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 09:57:04,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:57:04,888 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 5 states. [2020-12-09 09:57:10,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:10,127 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions. [2020-12-09 09:57:10,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:57:10,128 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-09 09:57:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:10,128 INFO L225 Difference]: With dead ends: 105 [2020-12-09 09:57:10,129 INFO L226 Difference]: Without dead ends: 55 [2020-12-09 09:57:10,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:57:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-09 09:57:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-09 09:57:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-09 09:57:10,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-12-09 09:57:10,135 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 19 [2020-12-09 09:57:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:10,135 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-12-09 09:57:10,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 09:57:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-12-09 09:57:10,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 09:57:10,136 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:10,136 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:10,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 09:57:10,337 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:10,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1311347808, now seen corresponding path program 1 times [2020-12-09 09:57:10,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 09:57:10,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513373411] [2020-12-09 09:57:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 09:57:10,352 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 09:57:10,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336767382] [2020-12-09 09:57:10,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:10,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:10,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-09 09:57:10,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:10,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:10,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:11,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513373411] [2020-12-09 09:57:11,098 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 09:57:11,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336767382] [2020-12-09 09:57:11,099 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: variable got div captured [2020-12-09 09:57:11,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2115877323] [2020-12-09 09:57:11,101 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2020-12-09 09:57:11,101 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 09:57:11,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 09:57:11,102 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 09:57:11,102 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 09:57:11,350 FATAL L? ?]: Ignoring exception! java.lang.NullPointerException at java.base/java.util.Arrays.stream(Arrays.java:5614) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.AbstractGeneralizedAffineTerm.div(AbstractGeneralizedAffineTerm.java:395) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.constructRhsIntegerQuotient(SolveForSubjectUtils.java:456) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.ExplicitLhsPolynomialRelation.divideByIntegerCoefficient(ExplicitLhsPolynomialRelation.java:224) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubjectWithoutTreatableDivMod(SolveForSubjectUtils.java:110) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:82) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:401) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:305) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:319) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:223) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:190) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:174) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:141) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.DualJunctionDer.tryToEliminate(DualJunctionDer.java:119) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:776) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:739) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:656) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:358) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.convert(QuantifierPusher.java:217) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.access$0(TermTransformer.java:127) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:151) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.linearterms.QuantifierPusher.eliminate(QuantifierPusher.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elimPushPull(PartialQuantifierElimination.java:202) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:138) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:198) 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 09:57:11,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:57:11,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 09:57:11,354 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 09:57:11,354 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 09:57:11,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:57:11,562 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 09:57:11,562 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 09:57:11,563 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 09:57:11,563 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 09:57:11,563 WARN L219 RCFGBacktranslator]: You are using large block encoding together with an algorithm for which the backtranslation into program statements is not yet implemented. [2020-12-09 09:57:11,563 ERROR L222 RCFGBacktranslator]: unable to determine which branch was taken, unable to determine the location [2020-12-09 09:57:11,573 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 09:57:11,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:57:11 BoogieIcfgContainer [2020-12-09 09:57:11,573 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:57:11,573 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:57:11,574 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:57:11,574 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:57:11,574 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:56:04" (3/4) ... [2020-12-09 09:57:11,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 09:57:11,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:57:11,578 INFO L168 Benchmark]: Toolchain (without parser) took 69545.65 ms. Allocated memory is still 96.5 MB. Free memory was 73.6 MB in the beginning and 47.1 MB in the end (delta: 26.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-12-09 09:57:11,578 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 69.2 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:57:11,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.95 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 62.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:57:11,579 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.31 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 60.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:57:11,579 INFO L168 Benchmark]: Boogie Preprocessor took 19.58 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 59.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:57:11,580 INFO L168 Benchmark]: RCFGBuilder took 2451.13 ms. Allocated memory is still 96.5 MB. Free memory was 59.2 MB in the beginning and 51.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:57:11,580 INFO L168 Benchmark]: TraceAbstraction took 66862.81 ms. Allocated memory is still 96.5 MB. Free memory was 51.2 MB in the beginning and 47.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. [2020-12-09 09:57:11,580 INFO L168 Benchmark]: Witness Printer took 3.24 ms. Allocated memory is still 96.5 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:57:11,582 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 69.2 MB. Free memory is still 44.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 168.95 ms. Allocated memory is still 96.5 MB. Free memory was 73.2 MB in the beginning and 62.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.31 ms. Allocated memory is still 96.5 MB. Free memory was 62.4 MB in the beginning and 60.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.58 ms. Allocated memory is still 96.5 MB. Free memory was 60.6 MB in the beginning and 59.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2451.13 ms. Allocated memory is still 96.5 MB. Free memory was 59.2 MB in the beginning and 51.5 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 66862.81 ms. Allocated memory is still 96.5 MB. Free memory was 51.2 MB in the beginning and 47.1 MB in the end (delta: 4.1 MB). Peak memory consumption was 6.2 MB. Max. memory is 16.1 GB. * Witness Printer took 3.24 ms. Allocated memory is still 96.5 MB. Free memory is still 47.1 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] unsigned int n, p, q, r, h; [L22] n = __VERIFIER_nondet_uint() [L9] COND TRUE !cond [L9] COND FALSE !(!cond) [L26] p = 0 [L27] q = 1 [L28] r = n [L29] h = 0 [L30] COND TRUE 1 [L31] COND FALSE !(!(q <= n)) [L34] q = 4 * q [L30] COND TRUE 1 [L31] COND TRUE !(q <= n) [L38] COND TRUE 1 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L46] COND FALSE !(!(q != 1)) [L49] q = q / 4 [L50] h = p + q [L51] p = p / 2 [L52] COND FALSE !(r >= h) [L38] COND TRUE 1 [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 42 locations, 9 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 66.8s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 59.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 99 SDslu, 201 SDs, 0 SdLazy, 155 SolverSat, 74 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 54.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=3, 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, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 5 QuantifiedInterpolants, 5784 SizeOfPredicates, 15 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 4/10 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: OVERALL_TIME[ms]: 296, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 6, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 9, TOOLS_POST_TIME[ms]: 127, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 9, TOOLS_QUANTIFIERELIM_TIME[ms]: 123, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 108, FLUID_QUERY_TIME[ms]: 2, FLUID_QUERIES: 20, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 96, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 13, DOMAIN_ISBOTTOM_APPLICATIONS: 6, DOMAIN_ISBOTTOM_TIME[ms]: 31, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 128, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 128, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 1, PATH_EXPR_TIME[ms]: 1, REGEX_TO_DAG_TIME[ms]: 2, DAG_COMPRESSION_TIME[ms]: 5, DAG_COMPRESSION_PROCESSED_NODES: 43, DAG_COMPRESSION_RETAINED_NODES: 21, 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 09:57:13,074 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:57:13,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:57:13,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:57:13,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:57:13,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:57:13,100 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:57:13,101 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:57:13,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:57:13,104 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:57:13,105 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:57:13,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:57:13,106 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:57:13,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:57:13,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:57:13,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:57:13,110 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:57:13,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:57:13,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:57:13,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:57:13,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:57:13,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:57:13,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:57:13,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:57:13,120 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:57:13,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:57:13,121 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:57:13,122 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:57:13,122 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:57:13,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:57:13,124 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:57:13,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:57:13,125 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:57:13,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:57:13,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:57:13,127 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:57:13,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:57:13,128 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:57:13,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:57:13,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:57:13,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:57:13,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 09:57:13,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:57:13,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:57:13,157 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:57:13,157 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:57:13,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:57:13,158 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:57:13,158 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:57:13,158 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:57:13,158 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:57:13,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:57:13,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:57:13,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:57:13,159 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:57:13,159 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 09:57:13,159 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:57:13,159 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 09:57:13,160 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:57:13,160 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 09:57:13,160 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 09:57:13,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:57:13,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 09:57:13,160 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:57:13,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 09:57:13,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:57:13,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 09:57:13,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:57:13,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:57:13,161 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:57:13,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:57:13,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 09:57:13,162 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 09:57:13,162 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 09:57:13,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 09:57:13,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:57:13,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:57:13,162 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_936c4ed1-4422-4321-85e4-34a10e40d194/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d247efd04e3e4cb2503f723a85cffc04db470c [2020-12-09 09:57:13,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:57:13,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:57:13,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:57:13,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:57:13,416 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:57:13,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2020-12-09 09:57:13,457 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/3eedf8e90/1a1a4a28617945ee9c61c46c747c7354/FLAGf691a5c9d [2020-12-09 09:57:13,908 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:57:13,909 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c [2020-12-09 09:57:13,914 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/3eedf8e90/1a1a4a28617945ee9c61c46c747c7354/FLAGf691a5c9d [2020-12-09 09:57:13,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/data/3eedf8e90/1a1a4a28617945ee9c61c46c747c7354 [2020-12-09 09:57:13,936 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:57:13,937 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:57:13,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:57:13,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:57:13,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:57:13,941 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:57:13" (1/1) ... [2020-12-09 09:57:13,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@658dce8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:13, skipping insertion in model container [2020-12-09 09:57:13,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:57:13" (1/1) ... [2020-12-09 09:57:13,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:57:13,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:57:14,067 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_936c4ed1-4422-4321-85e4-34a10e40d194/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2020-12-09 09:57:14,098 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:57:14,109 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:57:14,126 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_936c4ed1-4422-4321-85e4-34a10e40d194/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_valuebound2.c[525,538] [2020-12-09 09:57:14,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:57:14,157 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:57:14,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14 WrapperNode [2020-12-09 09:57:14,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:57:14,159 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:57:14,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:57:14,159 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:57:14,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,171 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,187 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:57:14,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:57:14,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:57:14,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:57:14,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,198 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,199 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... [2020-12-09 09:57:14,217 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:57:14,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:57:14,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:57:14,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:57:14,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 09:57:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:57:14,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:57:14,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:57:15,607 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:57:15,607 INFO L299 CfgBuilder]: Removed 28 assume(true) statements. [2020-12-09 09:57:15,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:15 BoogieIcfgContainer [2020-12-09 09:57:15,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:57:15,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:57:15,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:57:15,612 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:57:15,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:57:13" (1/3) ... [2020-12-09 09:57:15,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153b8bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:57:15, skipping insertion in model container [2020-12-09 09:57:15,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:57:14" (2/3) ... [2020-12-09 09:57:15,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153b8bd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:57:15, skipping insertion in model container [2020-12-09 09:57:15,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:57:15" (3/3) ... [2020-12-09 09:57:15,614 INFO L111 eAbstractionObserver]: Analyzing ICFG dijkstra-u_valuebound2.c [2020-12-09 09:57:15,623 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:57:15,626 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 9 error locations. [2020-12-09 09:57:15,633 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-12-09 09:57:15,650 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:57:15,650 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 09:57:15,650 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:57:15,650 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:57:15,650 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:57:15,650 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:57:15,650 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:57:15,650 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:57:15,660 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-12-09 09:57:15,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:57:15,663 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:15,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:15,664 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:15,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:15,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1235857098, now seen corresponding path program 1 times [2020-12-09 09:57:15,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:57:15,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [786561512] [2020-12-09 09:57:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:15,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 09:57:15,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:15,743 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 09:57:15,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:57:15,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [786561512] [2020-12-09 09:57:15,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:57:15,745 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:57:15,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251432148] [2020-12-09 09:57:15,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 09:57:15,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:57:15,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 09:57:15,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 09:57:15,761 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 2 states. [2020-12-09 09:57:15,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:15,777 INFO L93 Difference]: Finished difference Result 97 states and 130 transitions. [2020-12-09 09:57:15,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 09:57:15,778 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-09 09:57:15,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:15,786 INFO L225 Difference]: With dead ends: 97 [2020-12-09 09:57:15,786 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 09:57:15,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 09:57:15,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 09:57:15,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-12-09 09:57:15,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-12-09 09:57:15,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-12-09 09:57:15,821 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 10 [2020-12-09 09:57:15,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:15,821 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-12-09 09:57:15,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 09:57:15,821 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-12-09 09:57:15,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:57:15,822 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:15,822 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:16,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 09:57:16,024 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:16,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:16,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1503620767, now seen corresponding path program 1 times [2020-12-09 09:57:16,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:57:16,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1939274616] [2020-12-09 09:57:16,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:16,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:16,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:57:16,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:16,257 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:57:16,291 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 09:57:16,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:57:16,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1939274616] [2020-12-09 09:57:16,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:57:16,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 09:57:16,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513519519] [2020-12-09 09:57:16,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:57:16,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:57:16,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:57:16,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:57:16,293 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 7 states. [2020-12-09 09:57:17,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:17,932 INFO L93 Difference]: Finished difference Result 109 states and 120 transitions. [2020-12-09 09:57:17,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:57:17,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 11 [2020-12-09 09:57:17,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:17,933 INFO L225 Difference]: With dead ends: 109 [2020-12-09 09:57:17,934 INFO L226 Difference]: Without dead ends: 67 [2020-12-09 09:57:17,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-09 09:57:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-12-09 09:57:17,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-12-09 09:57:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-09 09:57:17,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-12-09 09:57:17,942 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 11 [2020-12-09 09:57:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:17,943 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-12-09 09:57:17,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:57:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-12-09 09:57:17,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 09:57:17,943 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:17,943 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:18,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 09:57:18,145 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:18,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:18,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1828543716, now seen corresponding path program 1 times [2020-12-09 09:57:18,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:57:18,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1584583007] [2020-12-09 09:57:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:18,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:57:18,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:18,321 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:57:18,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:18,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:18,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1584583007] [2020-12-09 09:57:18,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1307872161] [2020-12-09 09:57:18,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt [2020-12-09 09:57:18,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:18,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-09 09:57:18,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:18,830 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:57:18,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:18,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:19,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:19,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310463555] [2020-12-09 09:57:19,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 09:57:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:19,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 09:57:19,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:19,276 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:57:19,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:19,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:19,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 09:57:19,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6, 6, 9, 6] total 20 [2020-12-09 09:57:19,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118691571] [2020-12-09 09:57:19,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 09:57:19,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:57:19,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 09:57:19,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2020-12-09 09:57:19,307 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 20 states. [2020-12-09 09:57:24,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:24,544 INFO L93 Difference]: Finished difference Result 183 states and 201 transitions. [2020-12-09 09:57:24,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 09:57:24,553 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 13 [2020-12-09 09:57:24,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:24,555 INFO L225 Difference]: With dead ends: 183 [2020-12-09 09:57:24,555 INFO L226 Difference]: Without dead ends: 139 [2020-12-09 09:57:24,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=298, Invalid=758, Unknown=0, NotChecked=0, Total=1056 [2020-12-09 09:57:24,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-12-09 09:57:24,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 81. [2020-12-09 09:57:24,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-12-09 09:57:24,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2020-12-09 09:57:24,566 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 13 [2020-12-09 09:57:24,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:24,566 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2020-12-09 09:57:24,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 09:57:24,567 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2020-12-09 09:57:24,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 09:57:24,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:24,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:25,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 cvc4 --incremental --print-success --lang smt [2020-12-09 09:57:25,171 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:25,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:25,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2147482631, now seen corresponding path program 1 times [2020-12-09 09:57:25,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:57:25,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945944977] [2020-12-09 09:57:25,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 09:57:25,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:25,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:57:25,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:25,489 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 09:57:25,489 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:57:25,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945944977] [2020-12-09 09:57:25,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:57:25,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:57:25,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861752253] [2020-12-09 09:57:25,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:57:25,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:57:25,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:57:25,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:57:25,491 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand 6 states. [2020-12-09 09:57:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:27,233 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2020-12-09 09:57:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 09:57:27,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-12-09 09:57:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:27,234 INFO L225 Difference]: With dead ends: 98 [2020-12-09 09:57:27,234 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 09:57:27,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-12-09 09:57:27,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 09:57:27,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-09 09:57:27,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 09:57:27,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2020-12-09 09:57:27,241 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 15 [2020-12-09 09:57:27,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:27,241 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2020-12-09 09:57:27,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:57:27,242 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2020-12-09 09:57:27,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 09:57:27,242 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:27,242 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:27,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 09:57:27,443 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:27,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:27,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1165801538, now seen corresponding path program 1 times [2020-12-09 09:57:27,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:57:27,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1691748530] [2020-12-09 09:57:27,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 09:57:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:27,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 09:57:27,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:27,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 09:57:27,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:57:27,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1691748530] [2020-12-09 09:57:27,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:57:27,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:57:27,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513712122] [2020-12-09 09:57:27,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 09:57:27,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:57:27,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 09:57:27,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-09 09:57:27,744 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 6 states. [2020-12-09 09:57:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:31,165 INFO L93 Difference]: Finished difference Result 81 states and 85 transitions. [2020-12-09 09:57:31,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:57:31,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-12-09 09:57:31,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:31,167 INFO L225 Difference]: With dead ends: 81 [2020-12-09 09:57:31,167 INFO L226 Difference]: Without dead ends: 79 [2020-12-09 09:57:31,167 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-09 09:57:31,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-09 09:57:31,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-12-09 09:57:31,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-12-09 09:57:31,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-12-09 09:57:31,174 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 17 [2020-12-09 09:57:31,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:31,174 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-12-09 09:57:31,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 09:57:31,174 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-12-09 09:57:31,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 09:57:31,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:31,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:31,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 09:57:31,376 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:31,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:31,378 INFO L82 PathProgramCache]: Analyzing trace with hash -957521465, now seen corresponding path program 1 times [2020-12-09 09:57:31,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:57:31,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546866262] [2020-12-09 09:57:31,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:31,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:31,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 09:57:31,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:31,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:31,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:32,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546866262] [2020-12-09 09:57:32,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1110320422] [2020-12-09 09:57:32,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:32,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 09:57:32,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:32,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:32,902 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:32,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231181107] [2020-12-09 09:57:32,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:33,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 09:57:33,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:33,566 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:57:33,567 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: no int: (_ BitVec 32) [2020-12-09 09:57:33,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2020-12-09 09:57:33,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 6, 6] total 16 [2020-12-09 09:57:33,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093153984] [2020-12-09 09:57:33,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 09:57:33,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:57:33,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 09:57:33,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-12-09 09:57:33,569 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 16 states. [2020-12-09 09:57:36,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:57:36,353 INFO L93 Difference]: Finished difference Result 118 states and 119 transitions. [2020-12-09 09:57:36,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 09:57:36,362 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-12-09 09:57:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:57:36,363 INFO L225 Difference]: With dead ends: 118 [2020-12-09 09:57:36,363 INFO L226 Difference]: Without dead ends: 97 [2020-12-09 09:57:36,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 104 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2020-12-09 09:57:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-09 09:57:36,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 64. [2020-12-09 09:57:36,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-09 09:57:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-12-09 09:57:36,369 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 27 [2020-12-09 09:57:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:57:36,369 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-12-09 09:57:36,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 09:57:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-12-09 09:57:36,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-09 09:57:36,369 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:57:36,370 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:57:36,971 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 09:57:36,974 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:57:36,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:57:36,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1112228340, now seen corresponding path program 1 times [2020-12-09 09:57:36,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:57:36,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1731830472] [2020-12-09 09:57:36,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:37,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:37,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 09:57:37,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:37,737 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:37,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:38,679 WARN L197 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-12-09 09:57:38,686 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:57:38,686 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:57:39,359 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 09:57:40,646 WARN L197 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 09:57:42,113 WARN L197 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 09:57:44,039 WARN L197 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 09:57:44,056 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:44,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1731830472] [2020-12-09 09:57:44,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1905741337] [2020-12-09 09:57:44,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:44,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 09:57:44,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:45,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:46,517 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 09:57:48,235 WARN L197 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 09:57:49,660 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:49,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230471478] [2020-12-09 09:57:49,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:57:49,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:57:49,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 09:57:49,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:57:50,919 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:50,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:57:50,926 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:57:50,927 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:57:52,926 WARN L197 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 09:57:55,247 WARN L197 SmtUtils]: Spent 427.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-12-09 09:57:55,262 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:57:55,262 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 09:57:55,262 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7, 7, 12, 10] total 31 [2020-12-09 09:57:55,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61740823] [2020-12-09 09:57:55,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-12-09 09:57:55,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:57:55,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-12-09 09:57:55,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2020-12-09 09:57:55,264 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 31 states. [2020-12-09 09:58:00,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:58:00,503 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2020-12-09 09:58:00,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 09:58:00,504 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 29 [2020-12-09 09:58:00,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:58:00,505 INFO L225 Difference]: With dead ends: 91 [2020-12-09 09:58:00,505 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 09:58:00,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 17.1s TimeCoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 09:58:00,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 09:58:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-12-09 09:58:00,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-09 09:58:00,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 52 transitions. [2020-12-09 09:58:00,510 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 52 transitions. Word has length 29 [2020-12-09 09:58:00,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:58:00,510 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 52 transitions. [2020-12-09 09:58:00,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-12-09 09:58:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 52 transitions. [2020-12-09 09:58:00,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 09:58:00,510 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:58:00,511 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:58:01,112 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 09:58:01,113 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 09:58:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:58:01,114 INFO L82 PathProgramCache]: Analyzing trace with hash 595578799, now seen corresponding path program 1 times [2020-12-09 09:58:01,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:58:01,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783206961] [2020-12-09 09:58:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:58:01,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:58:01,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-09 09:58:01,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:58:02,086 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:58:02,116 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:02,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:58:04,156 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 09:58:06,523 WARN L197 SmtUtils]: Spent 932.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 09:58:06,529 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:58:06,529 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:58:10,530 WARN L197 SmtUtils]: Spent 1.56 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 09:58:13,997 WARN L197 SmtUtils]: Spent 1.39 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-09 09:58:14,002 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:58:14,003 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:58:18,879 WARN L197 SmtUtils]: Spent 1.87 s on a formula simplification that was a NOOP. DAG size: 43 [2020-12-09 09:58:29,055 WARN L197 SmtUtils]: Spent 3.87 s on a formula simplification that was a NOOP. DAG size: 59 [2020-12-09 09:58:44,618 WARN L197 SmtUtils]: Spent 5.36 s on a formula simplification that was a NOOP. DAG size: 72 [2020-12-09 09:58:46,970 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (bvudiv (bvmul c_ULTIMATE.start_main_~q~0 (_ bv4 32)) (_ bv4 32)))) (let ((.cse3 (bvadd .cse0 c_ULTIMATE.start_main_~p~0))) (let ((.cse1 (bvneg .cse3))) (let ((.cse4 (bvadd .cse1 c_ULTIMATE.start_main_~r~0)) (.cse2 (bvudiv c_ULTIMATE.start_main_~p~0 (_ bv2 32)))) (or (not (= (bvmul c_ULTIMATE.start_main_~n~0 .cse0) (bvadd (bvmul .cse0 .cse1) (bvmul .cse2 .cse2) (bvmul .cse0 c_ULTIMATE.start_main_~r~0) (bvmul .cse0 .cse0) (bvmul (_ bv2 32) (bvmul .cse2 .cse0))))) (= (_ bv0 32) (bvadd (bvneg (bvmul (bvmul .cse3 .cse0) .cse0)) (bvneg (bvmul (bvmul (bvadd (bvmul .cse2 (_ bv4 32)) (bvmul .cse0 (_ bv4 32))) .cse0) .cse0)) (bvmul (_ bv12 32) (bvmul .cse0 .cse0 .cse1)) (bvmul (_ bv12 32) (bvmul .cse0 .cse1 c_ULTIMATE.start_main_~p~0)) (bvmul .cse0 .cse0 .cse0) (bvmul (_ bv12 32) (bvmul .cse0 .cse0 c_ULTIMATE.start_main_~r~0)) (bvmul (_ bv3 32) (bvmul .cse0 c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~p~0)) (bvmul (_ bv12 32) (bvmul .cse0 c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~r~0)) (bvmul (_ bv3 32) (bvmul .cse0 .cse0 c_ULTIMATE.start_main_~p~0)) (bvneg (bvmul (bvmul (bvadd (bvmul .cse0 (_ bv12 32)) (bvmul c_ULTIMATE.start_main_~p~0 (_ bv12 32))) c_ULTIMATE.start_main_~n~0) .cse0)) (bvmul (_ bv16 32) (bvmul .cse2 c_ULTIMATE.start_main_~n~0 .cse0)) (bvneg (bvmul (bvmul (bvadd (bvmul .cse2 (_ bv16 32)) (bvmul .cse0 (_ bv16 32))) .cse0) .cse4)) (bvmul c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~p~0 c_ULTIMATE.start_main_~p~0) (bvmul (_ bv16 32) (bvmul c_ULTIMATE.start_main_~n~0 .cse0 .cse0)))) (not (bvult .cse4 (bvadd (bvmul .cse2 (_ bv2 32)) (bvmul .cse0 (_ bv3 32))))) (not (bvule c_ULTIMATE.start_main_~q~0 c_ULTIMATE.start_main_~n~0))))))) is different from true [2020-12-09 09:58:47,011 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-12-09 09:58:47,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783206961] [2020-12-09 09:58:47,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1541449893] [2020-12-09 09:58:47,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:58:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:58:47,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 09:58:47,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:58:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:58:48,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:59:00,874 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2020-12-09 09:59:08,972 WARN L197 SmtUtils]: Spent 680.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2020-12-09 09:59:24,188 WARN L197 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2020-12-09 09:59:24,225 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:59:24,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232941680] [2020-12-09 09:59:24,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_936c4ed1-4422-4321-85e4-34a10e40d194/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 09:59:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:59:24,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-09 09:59:24,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:59:28,999 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 09:59:30,298 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 09:59:31,162 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-09 09:59:31,329 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 09:59:31,347 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:59:31,347 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 09:59:31,359 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:59:31,359 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:59:31,374 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 09:59:31,374 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 09:59:39,554 WARN L197 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-09 09:59:46,966 WARN L197 SmtUtils]: Spent 1.50 s on a formula simplification that was a NOOP. DAG size: 59 [2020-12-09 10:00:14,566 WARN L197 SmtUtils]: Spent 4.01 s on a formula simplification that was a NOOP. DAG size: 70 [2020-12-09 10:00:37,813 WARN L197 SmtUtils]: Spent 3.05 s on a formula simplification that was a NOOP. DAG size: 72 [2020-12-09 10:00:37,822 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 10:00:37,822 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 10:01:15,539 WARN L197 SmtUtils]: Spent 3.70 s on a formula simplification that was a NOOP. DAG size: 70 [2020-12-09 10:01:43,495 WARN L197 SmtUtils]: Spent 3.89 s on a formula simplification that was a NOOP. DAG size: 71 [2020-12-09 10:02:06,604 WARN L197 SmtUtils]: Spent 7.45 s on a formula simplification that was a NOOP. DAG size: 74 [2020-12-09 10:02:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 10:02:06,664 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 10:02:06,665 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 7, 7, 16, 14] total 43 [2020-12-09 10:02:06,665 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645321385] [2020-12-09 10:02:06,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-12-09 10:02:06,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 10:02:06,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-12-09 10:02:06,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1357, Unknown=31, NotChecked=80, Total=1806 [2020-12-09 10:02:06,666 INFO L87 Difference]: Start difference. First operand 53 states and 52 transitions. Second operand 43 states. [2020-12-09 10:02:35,693 WARN L197 SmtUtils]: Spent 2.14 s on a formula simplification. DAG size of input: 118 DAG size of output: 40 [2020-12-09 10:02:37,566 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 20 [2020-12-09 10:02:40,790 WARN L197 SmtUtils]: Spent 706.00 ms on a formula simplification that was a NOOP. DAG size: 44 [2020-12-09 10:02:43,761 WARN L197 SmtUtils]: Spent 1.92 s on a formula simplification. DAG size of input: 56 DAG size of output: 44 [2020-12-09 10:02:47,262 WARN L197 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 61 DAG size of output: 45 [2020-12-09 10:02:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 10:02:51,920 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2020-12-09 10:02:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-09 10:02:51,921 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 31 [2020-12-09 10:02:51,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 10:02:51,921 INFO L225 Difference]: With dead ends: 53 [2020-12-09 10:02:51,921 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 10:02:51,922 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 134 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 255.2s TimeCoverageRelationStatistics Valid=543, Invalid=1880, Unknown=31, NotChecked=96, Total=2550 [2020-12-09 10:02:51,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 10:02:51,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 10:02:51,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 10:02:51,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 10:02:51,923 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-12-09 10:02:51,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 10:02:51,923 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 10:02:51,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-12-09 10:02:51,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 10:02:51,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 10:02:52,524 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 10:02:52,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 10:02:53,390 WARN L197 SmtUtils]: Spent 710.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2020-12-09 10:02:53,809 WARN L197 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-12-09 10:02:55,980 WARN L197 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-12-09 10:02:58,111 WARN L197 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-12-09 10:02:59,355 WARN L197 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 48 DAG size of output: 22 [2020-12-09 10:03:00,084 WARN L197 SmtUtils]: Spent 727.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-12-09 10:03:00,693 WARN L197 SmtUtils]: Spent 605.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 34 [2020-12-09 10:03:02,648 WARN L197 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 63 DAG size of output: 35 [2020-12-09 10:03:06,138 WARN L197 SmtUtils]: Spent 3.49 s on a formula simplification. DAG size of input: 63 DAG size of output: 60 [2020-12-09 10:03:06,140 INFO L265 CegarLoopResult]: At program point L60(lines 19 61) the Hoare annotation is: true [2020-12-09 10:03:06,140 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,140 INFO L262 CegarLoopResult]: For program point L52(lines 52 55) no Hoare annotation was computed. [2020-12-09 10:03:06,140 INFO L262 CegarLoopResult]: For program point L52-2(lines 19 61) no Hoare annotation was computed. [2020-12-09 10:03:06,140 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,140 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 10:03:06,140 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 10:03:06,140 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,141 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse4 .cse1 .cse2 .cse5 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse6 (= (_ bv4 32) ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and .cse0 .cse4 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) .cse2 .cse5 .cse6 .cse3))) [2020-12-09 10:03:06,141 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,141 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse4 .cse1 .cse2 .cse5 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse6 (= (_ bv4 32) ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and .cse0 .cse4 .cse1 .cse2 .cse5 .cse6 .cse3))) [2020-12-09 10:03:06,141 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,141 INFO L258 CegarLoopResult]: At program point L12-8(lines 11 17) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~h~0) .cse4 .cse1 .cse2 .cse5 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) (= (bvadd (bvmul (bvmul ULTIMATE.start_main_~n~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~p~0) (_ bv16 32)) (bvneg (bvmul (bvmul (bvmul ULTIMATE.start_main_~p~0 (_ bv16 32)) ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~r~0)) (bvmul ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~h~0) (bvneg (bvmul (bvmul ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~q~0)) (bvneg (bvmul (bvmul (bvmul ULTIMATE.start_main_~p~0 (_ bv4 32)) ULTIMATE.start_main_~q~0) ULTIMATE.start_main_~q~0)) (bvmul (bvmul ULTIMATE.start_main_~h~0 ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0) (_ bv12 32)) (bvneg (bvmul (bvmul (bvmul ULTIMATE.start_main_~h~0 (_ bv12 32)) ULTIMATE.start_main_~n~0) ULTIMATE.start_main_~q~0))) (_ bv0 32)) (= (_ bv4 32) ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and .cse0 .cse4 .cse1 .cse2 .cse5 (= (_ bv0 32) ULTIMATE.start_main_~h~0) .cse3))) [2020-12-09 10:03:06,141 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,141 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse4 .cse1 .cse2 .cse5 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse6 (= (_ bv4 32) ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and .cse0 .cse4 .cse1 .cse2 .cse5 .cse6 .cse3))) [2020-12-09 10:03:06,141 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,141 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse4 .cse1 .cse2 .cse5 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse6 (= (_ bv4 32) ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and .cse0 .cse4 .cse1 .cse2 .cse5 .cse6 .cse3))) [2020-12-09 10:03:06,142 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,142 INFO L258 CegarLoopResult]: At program point L12-17(lines 46 47) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse4 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse5 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse6 (= (_ bv0 32) ULTIMATE.start_main_~h~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse4 .cse1 .cse2 .cse5 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse6 (= (_ bv4 32) ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and .cse0 .cse4 .cse1 .cse2 .cse5 .cse6 .cse3))) [2020-12-09 10:03:06,142 INFO L262 CegarLoopResult]: For program point L12-18(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,142 INFO L258 CegarLoopResult]: At program point L12-20(lines 11 17) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse3 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse4 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse2 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)) .cse1 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse2 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse3 .cse1 .cse4 .cse2 (not (bvule ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~r~0))) (and .cse0 .cse3 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32))) .cse1 .cse4 .cse2))) [2020-12-09 10:03:06,142 INFO L262 CegarLoopResult]: For program point L12-21(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,142 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,142 INFO L258 CegarLoopResult]: At program point L12-23(lines 11 17) the Hoare annotation is: (let ((.cse0 (bvule ULTIMATE.start_main_~n~0 (_ bv2 32))) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~p~0 ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~n~0) (= ULTIMATE.start_main_~r~0 (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~h~0))) .cse3 (= (bvadd ULTIMATE.start_main_~n~0 (bvneg ULTIMATE.start_main_~q~0)) ULTIMATE.start_main_~r~0)) (and .cse0 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0) .cse1 .cse2 (= (_ bv0 32) ULTIMATE.start_main_~p~0) .cse3))) [2020-12-09 10:03:06,142 INFO L262 CegarLoopResult]: For program point L12-24(lines 12 15) no Hoare annotation was computed. [2020-12-09 10:03:06,142 INFO L265 CegarLoopResult]: At program point L12-26(lines 11 17) the Hoare annotation is: true [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13-6(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L13-7(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,143 INFO L262 CegarLoopResult]: For program point L38-1(lines 38 56) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point L13-8(lines 13 14) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L258 CegarLoopResult]: At program point L30-2(lines 30 35) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~n~0)) (.cse1 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse2 (= (_ bv0 32) ULTIMATE.start_main_~p~0)) (.cse3 (= (_ bv0 32) ULTIMATE.start_main_~h~0))) (or (and .cse0 .cse1 .cse2 (bvule ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse3 (= (_ bv4 32) ULTIMATE.start_main_~q~0) (bvule (_ bv1 32) ULTIMATE.start_main_~r~0)) (and (bvule ULTIMATE.start_main_~n~0 (_ bv2 32)) .cse0 .cse1 .cse2 .cse3 (= (_ bv1 32) ULTIMATE.start_main_~q~0)))) [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point L31(lines 31 32) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,144 INFO L262 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-12-09 10:03:06,145 INFO L262 CegarLoopResult]: For program point L8-1(lines 8 10) no Hoare annotation was computed. [2020-12-09 10:03:06,145 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 10:03:06,145 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,145 INFO L262 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-12-09 10:03:06,145 INFO L262 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-12-09 10:03:06,145 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 10:03:06,150 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) 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.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 10:03:06,153 INFO L168 Benchmark]: Toolchain (without parser) took 352215.38 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 54.3 MB in the beginning and 52.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 56.3 MB. Max. memory is 16.1 GB. [2020-12-09 10:03:06,153 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 69.2 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:03:06,154 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.09 ms. Allocated memory is still 69.2 MB. Free memory was 54.1 MB in the beginning and 52.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:03:06,154 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.84 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 50.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 10:03:06,155 INFO L168 Benchmark]: Boogie Preprocessor took 28.91 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 48.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 10:03:06,156 INFO L168 Benchmark]: RCFGBuilder took 1390.87 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 69.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. [2020-12-09 10:03:06,156 INFO L168 Benchmark]: TraceAbstraction took 350542.05 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 52.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 49.8 MB. Max. memory is 16.1 GB. [2020-12-09 10:03:06,159 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 69.2 MB. Free memory is still 51.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 220.09 ms. Allocated memory is still 69.2 MB. Free memory was 54.1 MB in the beginning and 52.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.84 ms. Allocated memory is still 69.2 MB. Free memory was 52.0 MB in the beginning and 50.2 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.91 ms. Allocated memory is still 69.2 MB. Free memory was 50.2 MB in the beginning and 48.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1390.87 ms. Allocated memory was 69.2 MB in the beginning and 90.2 MB in the end (delta: 21.0 MB). Free memory was 48.7 MB in the beginning and 69.0 MB in the end (delta: -20.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 350542.05 ms. Allocated memory is still 90.2 MB. Free memory was 68.7 MB in the beginning and 52.3 MB in the end (delta: 16.3 MB). Peak memory consumption was 49.8 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 - 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 9 specifications checked. All of them hold - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) 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...