./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.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_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 0036602275d14d2f63e3aedc245d67d50c1210f9 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 0036602275d14d2f63e3aedc245d67d50c1210f9 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:50:34,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:50:34,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:50:35,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:50:35,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:50:35,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:50:35,030 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:50:35,032 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:50:35,034 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:50:35,035 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:50:35,036 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:50:35,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:50:35,038 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:50:35,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:50:35,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:50:35,042 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:50:35,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:50:35,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:50:35,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:50:35,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:50:35,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:50:35,052 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:50:35,053 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:50:35,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:50:35,058 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:50:35,058 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:50:35,058 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:50:35,059 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:50:35,060 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:50:35,061 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:50:35,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:50:35,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:50:35,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:50:35,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:50:35,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:50:35,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:50:35,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:50:35,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:50:35,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:50:35,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:50:35,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:50:35,068 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:50:35,092 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:50:35,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:50:35,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:50:35,093 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:50:35,093 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:50:35,094 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:50:35,094 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:50:35,094 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:50:35,094 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:50:35,094 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:50:35,094 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:50:35,095 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:50:35,095 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:50:35,095 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:50:35,095 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:50:35,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:50:35,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:50:35,096 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:50:35,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:50:35,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:50:35,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:50:35,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:50:35,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:50:35,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:50:35,097 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:50:35,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:50:35,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:50:35,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:50:35,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:50:35,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:50:35,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:50:35,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:50:35,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:50:35,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:50:35,099 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:50:35,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:50:35,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:50:35,100 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:50:35,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:50:35,100 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_86f2c277-949e-4ce8-92ca-6d808be885b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0036602275d14d2f63e3aedc245d67d50c1210f9 [2020-12-09 18:50:35,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:50:35,320 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:50:35,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:50:35,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:50:35,323 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:50:35,324 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-09 18:50:35,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/112919c2d/2c32f2d7fbff40b4a4e3aeccfeaa4bcb/FLAG26120bba8 [2020-12-09 18:50:35,715 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:50:35,716 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-09 18:50:35,721 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/112919c2d/2c32f2d7fbff40b4a4e3aeccfeaa4bcb/FLAG26120bba8 [2020-12-09 18:50:35,731 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/112919c2d/2c32f2d7fbff40b4a4e3aeccfeaa4bcb [2020-12-09 18:50:35,732 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:50:35,733 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:50:35,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:50:35,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:50:35,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:50:35,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,740 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3745d27a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35, skipping insertion in model container [2020-12-09 18:50:35,740 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:50:35,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:50:35,868 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_86f2c277-949e-4ce8-92ca-6d808be885b9/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2020-12-09 18:50:35,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:50:35,886 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:50:35,895 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_86f2c277-949e-4ce8-92ca-6d808be885b9/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2020-12-09 18:50:35,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:50:35,910 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:50:35,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35 WrapperNode [2020-12-09 18:50:35,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:50:35,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:50:35,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:50:35,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:50:35,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:50:35,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:50:35,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:50:35,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:50:35,944 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... [2020-12-09 18:50:35,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:50:35,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:50:35,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:50:35,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:50:35,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:50:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:50:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:50:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:50:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:50:36,188 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:50:36,189 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 18:50:36,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:50:36 BoogieIcfgContainer [2020-12-09 18:50:36,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:50:36,192 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:50:36,192 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:50:36,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:50:36,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:50:35" (1/3) ... [2020-12-09 18:50:36,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e85535d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:50:36, skipping insertion in model container [2020-12-09 18:50:36,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:50:35" (2/3) ... [2020-12-09 18:50:36,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e85535d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:50:36, skipping insertion in model container [2020-12-09 18:50:36,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:50:36" (3/3) ... [2020-12-09 18:50:36,197 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2020-12-09 18:50:36,207 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:50:36,209 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 18:50:36,217 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 18:50:36,235 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:50:36,235 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:50:36,235 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:50:36,235 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:50:36,235 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:50:36,235 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:50:36,235 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:50:36,235 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:50:36,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-09 18:50:36,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 18:50:36,249 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:50:36,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 18:50:36,250 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:50:36,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:50:36,254 INFO L82 PathProgramCache]: Analyzing trace with hash 113318109, now seen corresponding path program 1 times [2020-12-09 18:50:36,261 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:50:36,262 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135614010] [2020-12-09 18:50:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:50:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:50:36,364 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 18:50:36,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135614010] [2020-12-09 18:50:36,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:50:36,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:50:36,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240790553] [2020-12-09 18:50:36,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:50:36,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:50:36,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:50:36,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:50:36,381 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-09 18:50:36,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:50:36,396 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-12-09 18:50:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:50:36,397 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 18:50:36,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:50:36,403 INFO L225 Difference]: With dead ends: 57 [2020-12-09 18:50:36,403 INFO L226 Difference]: Without dead ends: 27 [2020-12-09 18:50:36,406 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 18:50:36,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-09 18:50:36,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-09 18:50:36,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 18:50:36,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 18:50:36,432 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 5 [2020-12-09 18:50:36,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:50:36,432 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 18:50:36,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:50:36,432 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 18:50:36,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 18:50:36,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:50:36,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 18:50:36,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 18:50:36,433 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:50:36,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:50:36,434 INFO L82 PathProgramCache]: Analyzing trace with hash 111966592, now seen corresponding path program 1 times [2020-12-09 18:50:36,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:50:36,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748435902] [2020-12-09 18:50:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:50:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:50:36,509 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 18:50:36,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748435902] [2020-12-09 18:50:36,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:50:36,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 18:50:36,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832077573] [2020-12-09 18:50:36,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:50:36,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:50:36,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:50:36,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:50:36,512 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 4 states. [2020-12-09 18:50:36,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:50:36,592 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-12-09 18:50:36,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:50:36,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-12-09 18:50:36,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:50:36,593 INFO L225 Difference]: With dead ends: 30 [2020-12-09 18:50:36,593 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 18:50:36,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:50:36,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 18:50:36,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2020-12-09 18:50:36,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-12-09 18:50:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-12-09 18:50:36,598 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 5 [2020-12-09 18:50:36,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:50:36,598 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-12-09 18:50:36,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:50:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-12-09 18:50:36,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 18:50:36,598 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:50:36,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:50:36,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 18:50:36,599 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:50:36,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:50:36,599 INFO L82 PathProgramCache]: Analyzing trace with hash 225868067, now seen corresponding path program 1 times [2020-12-09 18:50:36,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:50:36,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587860447] [2020-12-09 18:50:36,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:50:36,611 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:50:36,611 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269750230] [2020-12-09 18:50:36,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:50:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:50:36,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 18:50:36,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:50:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:50:36,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:50:36,795 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 18:50:36,796 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:50:36,815 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 18:50:36,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587860447] [2020-12-09 18:50:36,816 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:50:36,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269750230] [2020-12-09 18:50:36,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:50:36,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2020-12-09 18:50:36,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476976777] [2020-12-09 18:50:36,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 18:50:36,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:50:36,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 18:50:36,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 18:50:36,819 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 10 states. [2020-12-09 18:50:36,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:50:36,967 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-12-09 18:50:36,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 18:50:36,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 7 [2020-12-09 18:50:36,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:50:36,968 INFO L225 Difference]: With dead ends: 48 [2020-12-09 18:50:36,968 INFO L226 Difference]: Without dead ends: 33 [2020-12-09 18:50:36,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2020-12-09 18:50:36,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-12-09 18:50:36,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 27. [2020-12-09 18:50:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-09 18:50:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-09 18:50:36,974 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 7 [2020-12-09 18:50:36,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:50:36,974 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-09 18:50:36,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 18:50:36,974 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-09 18:50:36,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-09 18:50:36,975 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:50:36,975 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 18:50:37,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-09 18:50:37,177 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:50:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:50:37,179 INFO L82 PathProgramCache]: Analyzing trace with hash 874023160, now seen corresponding path program 1 times [2020-12-09 18:50:37,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:50:37,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535219663] [2020-12-09 18:50:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:50:37,214 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:50:37,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406846055] [2020-12-09 18:50:37,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:50:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:50:37,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-09 18:50:37,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:50:37,447 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:50:37,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:50:37,487 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 18:50:37,487 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:50:45,564 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 6 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:50:45,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535219663] [2020-12-09 18:50:45,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:50:45,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406846055] [2020-12-09 18:50:45,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [483410284] [2020-12-09 18:50:45,579 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 18:50:45,579 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 18:50:45,582 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 18:50:45,586 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 18:50:45,586 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 18:50:46,048 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 18:50:46,187 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-09 18:50:46,444 WARN L197 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-12-09 18:50:46,792 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-12-09 18:50:46,930 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2020-12-09 18:50:47,142 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-12-09 18:50:47,143 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:50:47,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 18:50:47,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2020-12-09 18:50:47,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087856601] [2020-12-09 18:50:47,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-09 18:50:47,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:50:47,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-09 18:50:47,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=338, Unknown=4, NotChecked=0, Total=420 [2020-12-09 18:50:47,145 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 12 states. [2020-12-09 18:50:53,268 WARN L197 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 25 [2020-12-09 18:50:59,361 WARN L197 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 18:51:05,473 WARN L197 SmtUtils]: Spent 6.03 s on a formula simplification that was a NOOP. DAG size: 27 [2020-12-09 18:52:57,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:52:57,187 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2020-12-09 18:52:57,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 18:52:57,188 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-12-09 18:52:57,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:52:57,189 INFO L225 Difference]: With dead ends: 79 [2020-12-09 18:52:57,189 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 18:52:57,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 53.7s TimeCoverageRelationStatistics Valid=183, Invalid=673, Unknown=14, NotChecked=0, Total=870 [2020-12-09 18:52:57,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 18:52:57,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-12-09 18:52:57,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-09 18:52:57,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-12-09 18:52:57,196 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 17 [2020-12-09 18:52:57,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:52:57,196 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-12-09 18:52:57,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-09 18:52:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-12-09 18:52:57,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-09 18:52:57,197 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:52:57,198 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1] [2020-12-09 18:52:57,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:52:57,400 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:52:57,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:52:57,401 INFO L82 PathProgramCache]: Analyzing trace with hash 2062983086, now seen corresponding path program 2 times [2020-12-09 18:52:57,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:52:57,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478014868] [2020-12-09 18:52:57,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:52:57,434 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:52:57,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116279908] [2020-12-09 18:52:57,435 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:52:57,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-09 18:52:57,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 18:52:57,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-09 18:52:57,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:52:57,584 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2020-12-09 18:52:57,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:53:15,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478014868] [2020-12-09 18:53:15,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:53:15,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116279908] [2020-12-09 18:53:15,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-09 18:53:15,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038521594] [2020-12-09 18:53:15,437 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2020-12-09 18:53:15,437 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 18:53:15,437 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 18:53:15,437 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 18:53:15,437 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 18:53:15,753 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 18:53:15,891 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-12-09 18:53:16,813 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2020-12-09 18:53:16,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:53:16,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:53:16,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-09 18:53:16,815 ERROR L205 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2020-12-09 18:53:16,815 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 18:53:17,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:53:17,050 WARN L254 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-09 18:53:17,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:53:17 BoogieIcfgContainer [2020-12-09 18:53:17,051 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:53:17,051 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:53:17,051 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:53:17,051 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:53:17,052 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:50:36" (3/4) ... [2020-12-09 18:53:17,054 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 18:53:17,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:53:17,055 INFO L168 Benchmark]: Toolchain (without parser) took 161321.07 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 56.5 MB in the beginning and 84.2 MB in the end (delta: -27.7 MB). Peak memory consumption was 1.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:53:17,056 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 86.0 MB. Free memory was 45.0 MB in the beginning and 45.0 MB in the end (delta: 54.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:53:17,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 175.62 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 56.3 MB in the beginning and 92.7 MB in the end (delta: -36.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:53:17,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.10 ms. Allocated memory is still 115.3 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:53:17,057 INFO L168 Benchmark]: Boogie Preprocessor took 16.06 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 90.6 MB in the end (delta: 674.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:53:17,058 INFO L168 Benchmark]: RCFGBuilder took 236.30 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 73.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:53:17,058 INFO L168 Benchmark]: TraceAbstraction took 160859.21 ms. Allocated memory is still 115.3 MB. Free memory was 73.8 MB in the beginning and 84.9 MB in the end (delta: -11.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:53:17,058 INFO L168 Benchmark]: Witness Printer took 2.96 ms. Allocated memory is still 115.3 MB. Free memory was 84.9 MB in the beginning and 84.2 MB in the end (delta: 689.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:53:17,061 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 86.0 MB. Free memory was 45.0 MB in the beginning and 45.0 MB in the end (delta: 54.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 175.62 ms. Allocated memory was 86.0 MB in the beginning and 115.3 MB in the end (delta: 29.4 MB). Free memory was 56.3 MB in the beginning and 92.7 MB in the end (delta: -36.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 26.10 ms. Allocated memory is still 115.3 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.06 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 90.6 MB in the end (delta: 674.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 236.30 ms. Allocated memory is still 115.3 MB. Free memory was 90.6 MB in the beginning and 73.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 160859.21 ms. Allocated memory is still 115.3 MB. Free memory was 73.8 MB in the beginning and 84.9 MB in the end (delta: -11.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.96 ms. Allocated memory is still 115.3 MB. Free memory was 84.9 MB in the beginning and 84.2 MB in the end (delta: 689.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L20] int counter = 0; [L22] int n; [L23] long long a, s, t; [L24] n = __VERIFIER_nondet_int() [L26] a = 0 [L27] s = 1 [L28] t = 1 [L30] EXPR counter++ [L30] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L36] COND FALSE !(!(s <= n)) [L39] a = a + 1 [L40] t = t + 2 [L41] s = s + t [L30] EXPR counter++ [L30] COND TRUE counter++<2 [L12] COND FALSE !(!(cond)) [L12] COND FALSE !(!(cond)) [L12] COND TRUE !(cond) [L14] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 160.7s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 130.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 189 SDslu, 60 SDs, 0 SdLazy, 166 SolverSat, 165 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 85.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 53.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 7620 SizeOfPredicates, 12 NumberOfNonLiveVariables, 148 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:53:18,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:53:18,624 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:53:18,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:53:18,645 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:53:18,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:53:18,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:53:18,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:53:18,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:53:18,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:53:18,653 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:53:18,654 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:53:18,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:53:18,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:53:18,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:53:18,657 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:53:18,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:53:18,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:53:18,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:53:18,662 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:53:18,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:53:18,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:53:18,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:53:18,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:53:18,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:53:18,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:53:18,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:53:18,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:53:18,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:53:18,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:53:18,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:53:18,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:53:18,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:53:18,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:53:18,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:53:18,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:53:18,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:53:18,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:53:18,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:53:18,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:53:18,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:53:18,677 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 18:53:18,700 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:53:18,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:53:18,701 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:53:18,701 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:53:18,702 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:53:18,702 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:53:18,702 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:53:18,702 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:53:18,702 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:53:18,703 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:53:18,703 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:53:18,703 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:53:18,703 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:53:18,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:53:18,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:53:18,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:53:18,704 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:53:18,704 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 18:53:18,704 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 18:53:18,704 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:53:18,705 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:53:18,705 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:53:18,705 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:53:18,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:53:18,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 18:53:18,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:53:18,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:53:18,706 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:53:18,706 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:53:18,706 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:53:18,706 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 18:53:18,706 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 18:53:18,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:53:18,706 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:53:18,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:53:18,707 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_86f2c277-949e-4ce8-92ca-6d808be885b9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0036602275d14d2f63e3aedc245d67d50c1210f9 [2020-12-09 18:53:18,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:53:18,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:53:18,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:53:18,954 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:53:18,954 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:53:18,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-09 18:53:18,998 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/6889ddafc/b406185145b54fe3ae606adf949545e0/FLAG250177417 [2020-12-09 18:53:19,414 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:53:19,415 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c [2020-12-09 18:53:19,419 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/6889ddafc/b406185145b54fe3ae606adf949545e0/FLAG250177417 [2020-12-09 18:53:19,429 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/data/6889ddafc/b406185145b54fe3ae606adf949545e0 [2020-12-09 18:53:19,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:53:19,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:53:19,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:53:19,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:53:19,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:53:19,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fed7664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19, skipping insertion in model container [2020-12-09 18:53:19,437 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:53:19,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:53:19,555 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_86f2c277-949e-4ce8-92ca-6d808be885b9/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2020-12-09 18:53:19,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:53:19,575 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:53:19,584 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_86f2c277-949e-4ce8-92ca-6d808be885b9/sv-benchmarks/c/nla-digbench-scaling/sqrt1-ll_unwindbound2.c[520,533] [2020-12-09 18:53:19,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:53:19,600 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:53:19,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19 WrapperNode [2020-12-09 18:53:19,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:53:19,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:53:19,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:53:19,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:53:19,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,613 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:53:19,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:53:19,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:53:19,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:53:19,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,650 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... [2020-12-09 18:53:19,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:53:19,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:53:19,662 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:53:19,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:53:19,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:53:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 18:53:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:53:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:53:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:53:20,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:53:20,170 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2020-12-09 18:53:20,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:53:20 BoogieIcfgContainer [2020-12-09 18:53:20,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:53:20,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:53:20,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:53:20,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:53:20,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:53:19" (1/3) ... [2020-12-09 18:53:20,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1886cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:53:20, skipping insertion in model container [2020-12-09 18:53:20,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:53:19" (2/3) ... [2020-12-09 18:53:20,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d1886cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:53:20, skipping insertion in model container [2020-12-09 18:53:20,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:53:20" (3/3) ... [2020-12-09 18:53:20,180 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt1-ll_unwindbound2.c [2020-12-09 18:53:20,192 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:53:20,195 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 18:53:20,207 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 18:53:20,229 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:53:20,229 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:53:20,229 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:53:20,229 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:53:20,229 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:53:20,229 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:53:20,229 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:53:20,229 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:53:20,239 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-12-09 18:53:20,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 18:53:20,243 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:53:20,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 18:53:20,244 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:53:20,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:53:20,250 INFO L82 PathProgramCache]: Analyzing trace with hash 890922791, now seen corresponding path program 1 times [2020-12-09 18:53:20,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:53:20,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [333547436] [2020-12-09 18:53:20,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:53:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:20,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 18:53:20,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:20,347 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 18:53:20,348 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:53:20,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [333547436] [2020-12-09 18:53:20,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:53:20,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 18:53:20,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392155412] [2020-12-09 18:53:20,354 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 18:53:20,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:53:20,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 18:53:20,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:53:20,366 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 2 states. [2020-12-09 18:53:20,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:53:20,379 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2020-12-09 18:53:20,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 18:53:20,380 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 18:53:20,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:53:20,386 INFO L225 Difference]: With dead ends: 62 [2020-12-09 18:53:20,386 INFO L226 Difference]: Without dead ends: 28 [2020-12-09 18:53:20,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 18:53:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-09 18:53:20,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-09 18:53:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-09 18:53:20,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-12-09 18:53:20,413 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 6 [2020-12-09 18:53:20,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:53:20,413 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-12-09 18:53:20,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 18:53:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-12-09 18:53:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 18:53:20,414 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:53:20,414 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 18:53:20,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 18:53:20,615 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:53:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:53:20,616 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-09 18:53:20,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:53:20,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354374912] [2020-12-09 18:53:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:53:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:20,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 18:53:20,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:20,708 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 18:53:20,708 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:53:20,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354374912] [2020-12-09 18:53:20,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:53:20,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:53:20,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228274552] [2020-12-09 18:53:20,709 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:53:20,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:53:20,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:53:20,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:53:20,711 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 4 states. [2020-12-09 18:53:21,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:53:21,108 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-12-09 18:53:21,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:53:21,114 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-09 18:53:21,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:53:21,115 INFO L225 Difference]: With dead ends: 54 [2020-12-09 18:53:21,115 INFO L226 Difference]: Without dead ends: 50 [2020-12-09 18:53:21,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:53:21,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-09 18:53:21,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-12-09 18:53:21,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-09 18:53:21,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-09 18:53:21,122 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 6 [2020-12-09 18:53:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:53:21,122 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-09 18:53:21,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:53:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-09 18:53:21,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 18:53:21,123 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:53:21,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:53:21,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 18:53:21,325 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:53:21,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:53:21,327 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-09 18:53:21,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:53:21,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530087958] [2020-12-09 18:53:21,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:53:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:21,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 18:53:21,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:21,447 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 18:53:21,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:53:21,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530087958] [2020-12-09 18:53:21,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:53:21,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:53:21,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431394715] [2020-12-09 18:53:21,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:53:21,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:53:21,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:53:21,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:53:21,449 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 4 states. [2020-12-09 18:53:21,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:53:21,942 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-12-09 18:53:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 18:53:21,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 18:53:21,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:53:21,944 INFO L225 Difference]: With dead ends: 50 [2020-12-09 18:53:21,944 INFO L226 Difference]: Without dead ends: 46 [2020-12-09 18:53:21,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:53:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-09 18:53:21,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-12-09 18:53:21,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-12-09 18:53:21,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-12-09 18:53:21,949 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 8 [2020-12-09 18:53:21,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:53:21,949 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-12-09 18:53:21,949 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:53:21,950 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-12-09 18:53:21,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 18:53:21,950 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:53:21,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:53:22,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 18:53:22,152 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:53:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:53:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-09 18:53:22,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:53:22,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389394449] [2020-12-09 18:53:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 18:53:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:22,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 18:53:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:22,303 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 18:53:22,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 18:53:22,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389394449] [2020-12-09 18:53:22,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:53:22,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 18:53:22,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083896631] [2020-12-09 18:53:22,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 18:53:22,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:53:22,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 18:53:22,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 18:53:22,305 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 4 states. [2020-12-09 18:53:22,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:53:22,889 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-12-09 18:53:22,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 18:53:22,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 18:53:22,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:53:22,891 INFO L225 Difference]: With dead ends: 50 [2020-12-09 18:53:22,891 INFO L226 Difference]: Without dead ends: 39 [2020-12-09 18:53:22,891 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 18:53:22,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-09 18:53:22,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2020-12-09 18:53:22,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 18:53:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 18:53:22,895 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 10 [2020-12-09 18:53:22,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:53:22,896 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 18:53:22,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 18:53:22,896 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 18:53:22,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 18:53:22,896 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:53:22,896 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:53:23,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 18:53:23,098 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:53:23,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:53:23,100 INFO L82 PathProgramCache]: Analyzing trace with hash -1265507748, now seen corresponding path program 1 times [2020-12-09 18:53:23,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:53:23,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228021474] [2020-12-09 18:53:23,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 18:53:23,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:23,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 18:53:23,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:23,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:53:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 18:53:23,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228021474] [2020-12-09 18:53:23,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1181095460] [2020-12-09 18:53:23,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt [2020-12-09 18:53:23,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:23,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 18:53:23,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:23,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:53:23,628 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 18:53:23,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750537465] [2020-12-09 18:53:23,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:53:23,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:23,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-09 18:53:23,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:23,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:23,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:53:23,903 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:23,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 18:53:23,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5, 4, 6, 5] total 9 [2020-12-09 18:53:23,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256517601] [2020-12-09 18:53:23,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 18:53:23,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:53:23,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 18:53:23,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-12-09 18:53:23,906 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 9 states. [2020-12-09 18:53:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:53:24,660 INFO L93 Difference]: Finished difference Result 58 states and 62 transitions. [2020-12-09 18:53:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 18:53:24,661 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-12-09 18:53:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:53:24,662 INFO L225 Difference]: With dead ends: 58 [2020-12-09 18:53:24,662 INFO L226 Difference]: Without dead ends: 54 [2020-12-09 18:53:24,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-12-09 18:53:24,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-09 18:53:24,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 32. [2020-12-09 18:53:24,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 18:53:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-12-09 18:53:24,667 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 14 [2020-12-09 18:53:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:53:24,667 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-12-09 18:53:24,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 18:53:24,667 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-12-09 18:53:24,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 18:53:24,668 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:53:24,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 18:53:25,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt,6 mathsat -unsat_core_generation=3,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:53:25,271 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:53:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:53:25,272 INFO L82 PathProgramCache]: Analyzing trace with hash -677045505, now seen corresponding path program 1 times [2020-12-09 18:53:25,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:53:25,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246802886] [2020-12-09 18:53:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:53:25,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:25,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 18:53:25,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:25,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:53:26,150 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-12-09 18:53:26,721 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 18:53:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:26,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246802886] [2020-12-09 18:53:26,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1337016413] [2020-12-09 18:53:26,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:53:26,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:26,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 18:53:26,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:26,987 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:26,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:53:27,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:27,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278513747] [2020-12-09 18:53:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:53:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:53:27,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 18:53:27,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:53:27,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:53:27,310 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:53:28,280 WARN L197 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 18:53:28,289 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 18:53:28,290 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:53:31,260 WARN L197 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 18:53:38,277 WARN L197 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-09 18:53:47,070 WARN L197 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 18:53:47,076 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 18:53:47,076 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:53:49,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 18:53:49,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 18:53:49,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 8, 8] total 15 [2020-12-09 18:53:49,737 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588978186] [2020-12-09 18:53:49,738 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-09 18:53:49,738 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:53:49,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-09 18:53:49,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=135, Unknown=8, NotChecked=0, Total=210 [2020-12-09 18:53:49,739 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 15 states. [2020-12-09 18:54:00,934 WARN L197 SmtUtils]: Spent 9.10 s on a formula simplification that was a NOOP. DAG size: 35 [2020-12-09 18:54:15,619 WARN L197 SmtUtils]: Spent 9.05 s on a formula simplification that was a NOOP. DAG size: 30 [2020-12-09 18:54:31,167 WARN L197 SmtUtils]: Spent 9.65 s on a formula simplification that was a NOOP. DAG size: 34 [2020-12-09 18:54:55,046 WARN L197 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 18:55:22,642 WARN L197 SmtUtils]: Spent 12.49 s on a formula simplification that was a NOOP. DAG size: 31 [2020-12-09 18:55:36,100 WARN L197 SmtUtils]: Spent 8.46 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 18:55:53,417 WARN L197 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-12-09 18:56:13,326 WARN L197 SmtUtils]: Spent 8.47 s on a formula simplification that was a NOOP. DAG size: 28 [2020-12-09 18:56:28,100 WARN L197 SmtUtils]: Spent 498.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 18:56:47,377 WARN L197 SmtUtils]: Spent 10.41 s on a formula simplification that was a NOOP. DAG size: 32 [2020-12-09 18:56:53,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:56:53,671 INFO L93 Difference]: Finished difference Result 75 states and 83 transitions. [2020-12-09 18:56:53,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 18:56:53,679 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 16 [2020-12-09 18:56:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:56:53,680 INFO L225 Difference]: With dead ends: 75 [2020-12-09 18:56:53,680 INFO L226 Difference]: Without dead ends: 61 [2020-12-09 18:56:53,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 133.4s TimeCoverageRelationStatistics Valid=217, Invalid=409, Unknown=24, NotChecked=0, Total=650 [2020-12-09 18:56:53,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-12-09 18:56:53,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 36. [2020-12-09 18:56:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-09 18:56:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-12-09 18:56:53,688 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 16 [2020-12-09 18:56:53,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:56:53,688 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-12-09 18:56:53,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-09 18:56:53,688 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-12-09 18:56:53,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 18:56:53,689 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:56:53,689 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-09 18:56:54,290 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 18:56:54,292 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:56:54,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:56:54,294 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 1 times [2020-12-09 18:56:54,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 18:56:54,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770906063] [2020-12-09 18:56:54,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:56:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:56:54,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 18:56:54,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:56:54,603 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:56:54,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:56:54,699 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:56:54,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770906063] [2020-12-09 18:56:54,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1958145653] [2020-12-09 18:56:54,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:56:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:56:55,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 18:56:55,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:56:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:56:55,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:56:55,152 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:56:55,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031199368] [2020-12-09 18:56:55,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/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 18:56:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:56:55,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 18:56:55,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:56:56,221 WARN L197 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-12-09 18:56:56,631 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:56:56,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:56:58,801 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-12-09 18:57:00,674 WARN L197 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-12-09 18:57:00,679 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 18:57:00,679 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:57:08,704 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 18:57:18,392 WARN L197 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-09 18:57:31,216 WARN L197 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 40 [2020-12-09 18:57:31,223 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 18:57:31,223 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:57:33,435 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ sign_extend 32) (_ bv1 32))) (.cse0 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse3 ((_ sign_extend 32) (_ bv0 32))) (.cse5 (bvmul c_ULTIMATE.start_main_~t~0 c_ULTIMATE.start_main_~t~0)) (.cse6 (bvmul c_ULTIMATE.start_main_~t~0 .cse0)) (.cse4 ((_ sign_extend 32) (_ bv4 32))) (.cse1 (bvmul .cse2 .cse2))) (or (not (= (bvadd .cse0 c_ULTIMATE.start_main_~s~0 c_ULTIMATE.start_main_~t~0) (bvadd (bvmul c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~a~0) (bvmul (_ bv4 64) .cse1) (bvmul (_ bv4 64) (bvmul .cse2 c_ULTIMATE.start_main_~a~0))))) (not (= .cse3 (bvadd (bvneg (bvmul .cse4 c_ULTIMATE.start_main_~s~0)) .cse5 .cse6 .cse2))) (= .cse3 (bvadd (bvmul (_ bv2 64) (bvmul .cse0 .cse0)) .cse5 (bvmul (_ bv3 64) .cse6) .cse2 (bvneg (bvmul .cse4 (let ((.cse7 (bvadd .cse2 c_ULTIMATE.start_main_~a~0))) (bvadd .cse1 (bvmul .cse7 .cse7) (bvmul (bvmul .cse7 .cse2) (_ bv2 64))))))))))) is different from true [2020-12-09 18:57:33,481 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2020-12-09 18:57:33,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-12-09 18:57:33,482 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 10, 9] total 25 [2020-12-09 18:57:33,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025019646] [2020-12-09 18:57:33,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-12-09 18:57:33,483 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 18:57:33,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-12-09 18:57:33,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=4, NotChecked=44, Total=600 [2020-12-09 18:57:33,484 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 25 states. [2020-12-09 18:57:34,946 WARN L197 SmtUtils]: Spent 681.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 22 [2020-12-09 18:57:35,797 WARN L197 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 24 [2020-12-09 18:57:36,901 WARN L197 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 32 [2020-12-09 18:57:37,895 WARN L197 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 36 [2020-12-09 18:57:38,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:57:38,224 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-12-09 18:57:38,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-09 18:57:38,225 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 26 [2020-12-09 18:57:38,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:57:38,225 INFO L225 Difference]: With dead ends: 44 [2020-12-09 18:57:38,225 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:57:38,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 41.8s TimeCoverageRelationStatistics Valid=218, Invalid=774, Unknown=4, NotChecked=60, Total=1056 [2020-12-09 18:57:38,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:57:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:57:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:57:38,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:57:38,227 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-12-09 18:57:38,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:57:38,227 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:57:38,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-12-09 18:57:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:57:38,228 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:57:38,829 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 18:57:38,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:57:39,044 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-12-09 18:57:40,268 WARN L197 SmtUtils]: Spent 1.22 s on a formula simplification. DAG size of input: 86 DAG size of output: 50 [2020-12-09 18:57:41,135 WARN L197 SmtUtils]: Spent 865.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-12-09 18:57:42,413 WARN L197 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-12-09 18:57:42,513 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 18:57:42,513 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 18:57:42,513 INFO L265 CegarLoopResult]: At program point L48(lines 21 49) the Hoare annotation is: true [2020-12-09 18:57:42,513 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 18:57:42,513 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 18:57:42,514 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:57:42,514 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 18:57:42,514 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 18:57:42,514 INFO L262 CegarLoopResult]: For program point L12(lines 12 15) no Hoare annotation was computed. [2020-12-09 18:57:42,514 INFO L258 CegarLoopResult]: At program point L12-2(lines 11 17) the Hoare annotation is: (let ((.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= .cse0 (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~a~0)) (= (bvadd ~counter~0 (_ bv4294967294 32)) (_ bv0 32)) .cse2 (= ULTIMATE.start_main_~s~0 (bvadd ULTIMATE.start_main_~t~0 .cse1)) (= (bvadd ULTIMATE.start_main_~s~0 (bvmul ((_ sign_extend 32) (_ bv2 32)) (_ bv18446744073709551615 64))) (bvmul .cse1 (_ bv2 64)))) (and .cse2 (= ULTIMATE.start_main_~s~0 .cse1) (= (_ bv1 32) ~counter~0) (= .cse0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse1)))) [2020-12-09 18:57:42,514 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 15) no Hoare annotation was computed. [2020-12-09 18:57:42,514 INFO L258 CegarLoopResult]: At program point L12-5(lines 11 17) the Hoare annotation is: (let ((.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= .cse0 (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~a~0)) (= (bvadd ~counter~0 (_ bv4294967294 32)) (_ bv0 32)) .cse2 (= ULTIMATE.start_main_~s~0 (bvadd ULTIMATE.start_main_~t~0 .cse1)) (= (bvadd ULTIMATE.start_main_~s~0 (bvmul ((_ sign_extend 32) (_ bv2 32)) (_ bv18446744073709551615 64))) (bvmul .cse1 (_ bv2 64)))) (and .cse2 (= ULTIMATE.start_main_~s~0 .cse1) (= (_ bv1 32) ~counter~0) (= .cse0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse1)))) [2020-12-09 18:57:42,514 INFO L262 CegarLoopResult]: For program point L12-6(lines 12 15) no Hoare annotation was computed. [2020-12-09 18:57:42,515 INFO L258 CegarLoopResult]: At program point L12-8(lines 36 37) the Hoare annotation is: (let ((.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse0 ((_ sign_extend 32) (_ bv0 32))) (.cse1 ((_ sign_extend 32) (_ bv1 32)))) (or (and (= .cse0 (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~a~0)) (= (bvadd ~counter~0 (_ bv4294967294 32)) (_ bv0 32)) .cse2 (= ULTIMATE.start_main_~s~0 (bvadd ULTIMATE.start_main_~t~0 .cse1)) (= (bvadd ULTIMATE.start_main_~s~0 (bvmul ((_ sign_extend 32) (_ bv2 32)) (_ bv18446744073709551615 64))) (bvmul .cse1 (_ bv2 64)))) (and .cse2 (= ULTIMATE.start_main_~s~0 .cse1) (= (_ bv1 32) ~counter~0) (= .cse0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse1)))) [2020-12-09 18:57:42,515 INFO L262 CegarLoopResult]: For program point L12-9(lines 12 15) no Hoare annotation was computed. [2020-12-09 18:57:42,515 INFO L258 CegarLoopResult]: At program point L12-11(lines 11 17) the Hoare annotation is: (let ((.cse1 ((_ sign_extend 32) (_ bv1 32))) (.cse4 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse2 (= (bvadd .cse1 (bvmul ULTIMATE.start_main_~a~0 .cse4)) ULTIMATE.start_main_~t~0)) (.cse3 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse5 (bvmul .cse1 (_ bv2 64))) (.cse0 ((_ sign_extend 32) (_ bv0 32)))) (or (and (= .cse0 (bvadd (bvmul .cse1 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~a~0)) .cse2 .cse3 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse4 (_ bv18446744073709551615 64))) .cse5)) (and (= ULTIMATE.start_main_~s~0 .cse1) (= .cse0 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse1)) (and .cse2 .cse3 (not (bvslt ~counter~0 (_ bv2 32))) (not (bvslt (bvadd ~counter~0 (_ bv2 32)) (_ bv2 32))) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse1 .cse1) (bvmul (bvmul .cse1 ULTIMATE.start_main_~a~0) (_ bv2 64)))) (= ULTIMATE.start_main_~a~0 (bvadd .cse5 .cse0)))))) [2020-12-09 18:57:42,515 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:57:42,515 INFO L262 CegarLoopResult]: For program point L12-12(lines 12 15) no Hoare annotation was computed. [2020-12-09 18:57:42,515 INFO L258 CegarLoopResult]: At program point L12-14(lines 11 17) the Hoare annotation is: (let ((.cse5 ((_ sign_extend 32) (_ bv1 32))) (.cse6 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse4 ((_ sign_extend 32) (_ bv0 32))) (.cse0 (= (bvadd .cse5 (bvmul ULTIMATE.start_main_~a~0 .cse6)) ULTIMATE.start_main_~t~0)) (.cse1 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse2 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse3 (bvmul .cse5 (_ bv2 64)))) (or (and .cse0 .cse1 .cse2 (not (bvslt ~counter~0 (_ bv2 32))) (not (bvslt (bvadd ~counter~0 (_ bv2 32)) (_ bv2 32))) (= ULTIMATE.start_main_~a~0 (bvadd .cse3 .cse4)) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse5 .cse5) (bvmul (bvmul .cse5 ULTIMATE.start_main_~a~0) (_ bv2 64))))) (and (= .cse4 (bvadd (bvmul .cse5 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~a~0)) .cse0 .cse1 .cse2 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse6 (_ bv18446744073709551615 64))) .cse3)) (and (= ULTIMATE.start_main_~s~0 .cse5) (= ULTIMATE.start_main_~t~0 .cse5))))) [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L12-15(lines 12 15) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L265 CegarLoopResult]: At program point L12-17(lines 11 17) the Hoare annotation is: true [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L13(lines 13 14) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L13-1(lines 13 14) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L13-2(lines 13 14) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L13-3(lines 13 14) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L13-4(lines 13 14) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L13-5(lines 13 14) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L262 CegarLoopResult]: For program point L30-1(lines 30 42) no Hoare annotation was computed. [2020-12-09 18:57:42,516 INFO L258 CegarLoopResult]: At program point L30-3(lines 30 42) the Hoare annotation is: (let ((.cse0 ((_ sign_extend 32) (_ bv1 32))) (.cse6 ((_ sign_extend 32) (_ bv2 32)))) (let ((.cse1 ((_ sign_extend 32) (_ bv0 32))) (.cse2 (= (bvadd .cse0 (bvmul ULTIMATE.start_main_~a~0 .cse6)) ULTIMATE.start_main_~t~0)) (.cse3 (not (= ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)))) (.cse4 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse5 (bvmul .cse0 (_ bv2 64)))) (or (and (= (_ bv0 32) ~counter~0) (= ULTIMATE.start_main_~s~0 .cse0) (= .cse1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~t~0 .cse0)) (and .cse2 (= (bvadd ~counter~0 (_ bv4294967294 32)) (_ bv0 32)) .cse3 .cse4 (= ULTIMATE.start_main_~a~0 (bvadd .cse5 .cse1)) (= ULTIMATE.start_main_~s~0 (bvadd (bvmul ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0) (bvmul .cse0 .cse0) (bvmul (bvmul .cse0 ULTIMATE.start_main_~a~0) (_ bv2 64))))) (and (= .cse1 (bvadd (bvmul .cse0 (_ bv18446744073709551615 64)) ULTIMATE.start_main_~a~0)) .cse2 .cse3 .cse4 (= (bvadd ULTIMATE.start_main_~s~0 (bvmul .cse6 (_ bv18446744073709551615 64))) .cse5) (= (_ bv1 32) ~counter~0))))) [2020-12-09 18:57:42,517 INFO L262 CegarLoopResult]: For program point L30-4(lines 30 42) no Hoare annotation was computed. [2020-12-09 18:57:42,517 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2020-12-09 18:57:42,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:57:42 BoogieIcfgContainer [2020-12-09 18:57:42,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:57:42,535 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:57:42,535 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:57:42,535 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:57:42,536 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:53:20" (3/4) ... [2020-12-09 18:57:42,538 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:57:42,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-12-09 18:57:42,545 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-09 18:57:42,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:57:42,546 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:57:42,577 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_86f2c277-949e-4ce8-92ca-6d808be885b9/bin/utaipan/witness.graphml [2020-12-09 18:57:42,577 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:57:42,578 INFO L168 Benchmark]: Toolchain (without parser) took 263145.27 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 46.3 MB in the beginning and 21.0 MB in the end (delta: 25.4 MB). Peak memory consumption was 45.8 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:42,578 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:57:42,578 INFO L168 Benchmark]: CACSL2BoogieTranslator took 167.72 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 35.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:42,578 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 62.9 MB. Free memory was 35.6 MB in the beginning and 47.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:42,579 INFO L168 Benchmark]: Boogie Preprocessor took 20.33 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 45.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:57:42,579 INFO L168 Benchmark]: RCFGBuilder took 510.48 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 31.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:42,579 INFO L168 Benchmark]: TraceAbstraction took 262361.34 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 30.7 MB in the beginning and 25.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:42,579 INFO L168 Benchmark]: Witness Printer took 41.66 ms. Allocated memory is still 83.9 MB. Free memory was 25.2 MB in the beginning and 21.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:57:42,581 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 62.9 MB. Free memory is still 45.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 167.72 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 35.6 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.85 ms. Allocated memory is still 62.9 MB. Free memory was 35.6 MB in the beginning and 47.2 MB in the end (delta: -11.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.33 ms. Allocated memory is still 62.9 MB. Free memory was 47.2 MB in the beginning and 45.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 510.48 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 31.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 262361.34 ms. Allocated memory was 62.9 MB in the beginning and 83.9 MB in the end (delta: 21.0 MB). Free memory was 30.7 MB in the beginning and 25.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. * Witness Printer took 41.66 ms. Allocated memory is still 83.9 MB. Free memory was 25.2 MB in the beginning and 21.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(counter, 4294967294bv32) == 0bv32) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && s == ~bvadd16(t, ~sign_extendFrom8To32(1bv32))) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64)) || ((((~bvadd16(cond, 4294967295bv32) == 0bv32 && s == ~sign_extendFrom8To32(1bv32)) && 1bv32 == counter) && ~sign_extendFrom8To32(0bv32) == a) && t == ~sign_extendFrom8To32(1bv32)) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((0bv32 == counter && s == ~sign_extendFrom8To32(1bv32)) && ~sign_extendFrom8To32(0bv32) == a) && t == ~sign_extendFrom8To32(1bv32)) || (((((~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t && ~bvadd16(counter, 4294967294bv32) == 0bv32) && !(cond == 0bv32)) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && a == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64), ~sign_extendFrom8To32(0bv32))) && s == ~bvadd16(~bvmul64(a, a), ~bvmul64(~sign_extendFrom8To32(1bv32), ~sign_extendFrom8To32(1bv32)), ~bvmul64(~bvmul64(~sign_extendFrom8To32(1bv32), a), 2bv64)))) || (((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t) && !(cond == 0bv32)) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64)) && 1bv32 == counter) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64)) || ((s == ~sign_extendFrom8To32(1bv32) && ~sign_extendFrom8To32(0bv32) == a) && t == ~sign_extendFrom8To32(1bv32))) || (((((~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t && ~bvadd16(cond, 4294967295bv32) == 0bv32) && !~bvslt32(counter, 2bv32)) && !~bvslt32(~bvadd16(counter, 2bv32), 2bv32)) && s == ~bvadd16(~bvmul64(a, a), ~bvmul64(~sign_extendFrom8To32(1bv32), ~sign_extendFrom8To32(1bv32)), ~bvmul64(~bvmul64(~sign_extendFrom8To32(1bv32), a), 2bv64))) && a == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64), ~sign_extendFrom8To32(0bv32))) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: ((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(counter, 4294967294bv32) == 0bv32) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && s == ~bvadd16(t, ~sign_extendFrom8To32(1bv32))) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64)) || ((((~bvadd16(cond, 4294967295bv32) == 0bv32 && s == ~sign_extendFrom8To32(1bv32)) && 1bv32 == counter) && ~sign_extendFrom8To32(0bv32) == a) && t == ~sign_extendFrom8To32(1bv32)) - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: (((((((~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t && !(cond == 0bv32)) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && !~bvslt32(counter, 2bv32)) && !~bvslt32(~bvadd16(counter, 2bv32), 2bv32)) && a == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64), ~sign_extendFrom8To32(0bv32))) && s == ~bvadd16(~bvmul64(a, a), ~bvmul64(~sign_extendFrom8To32(1bv32), ~sign_extendFrom8To32(1bv32)), ~bvmul64(~bvmul64(~sign_extendFrom8To32(1bv32), a), 2bv64))) || ((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(~sign_extendFrom8To32(1bv32), ~bvmul64(a, ~sign_extendFrom8To32(2bv32))) == t) && !(cond == 0bv32)) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64))) || (s == ~sign_extendFrom8To32(1bv32) && t == ~sign_extendFrom8To32(1bv32)) - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((~sign_extendFrom8To32(0bv32) == ~bvadd16(~bvmul64(~sign_extendFrom8To32(1bv32), 18446744073709551615bv64), a) && ~bvadd16(counter, 4294967294bv32) == 0bv32) && ~bvadd16(cond, 4294967295bv32) == 0bv32) && s == ~bvadd16(t, ~sign_extendFrom8To32(1bv32))) && ~bvadd16(s, ~bvmul64(~sign_extendFrom8To32(2bv32), 18446744073709551615bv64)) == ~bvmul64(~sign_extendFrom8To32(1bv32), 2bv64)) || ((((~bvadd16(cond, 4294967295bv32) == 0bv32 && s == ~sign_extendFrom8To32(1bv32)) && 1bv32 == counter) && ~sign_extendFrom8To32(0bv32) == a) && t == ~sign_extendFrom8To32(1bv32)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 258.6s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 190.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 125 SDtfs, 286 SDslu, 209 SDs, 0 SdLazy, 471 SolverSat, 223 SolverUnsat, 33 SolverUnknown, 0 SolverNotchecked, 76.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 375 GetRequests, 286 SyntacticMatches, 13 SemanticMatches, 76 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 175.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 7 MinimizatonAttempts, 68 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 25 NumberOfFragments, 492 HoareAnnotationTreeSize, 8 FomulaSimplifications, 329 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 638 FormulaSimplificationTreeSizeReductionInter, 3.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 62.8s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 344 ConstructedInterpolants, 0 QuantifiedInterpolants, 76701 SizeOfPredicates, 51 NumberOfNonLiveVariables, 655 ConjunctsInSsa, 109 ConjunctsInUnsatCore, 22 InterpolantComputations, 4 PerfectInterpolantSequences, 63/180 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...