./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH --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 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:59:18,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:59:18,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:59:18,899 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:59:18,900 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:59:18,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:59:18,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:59:18,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:59:18,916 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:59:18,923 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:59:18,924 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:59:18,926 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:59:18,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:59:18,930 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:59:18,933 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:59:18,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:59:18,946 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:59:18,947 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:59:18,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:59:18,960 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:59:18,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:59:18,964 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:59:18,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:59:18,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:59:18,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:59:18,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:59:18,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:59:18,985 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:59:18,986 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:59:18,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:59:18,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:59:18,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:59:18,993 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:59:18,995 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:59:18,997 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:59:18,997 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:59:18,998 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:59:18,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:59:18,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:59:19,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:59:19,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:59:19,003 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:59:19,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:59:19,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:59:19,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:59:19,057 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:59:19,057 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:59:19,058 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:59:19,058 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:59:19,058 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:59:19,058 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:59:19,059 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:59:19,060 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:59:19,060 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:59:19,061 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:59:19,061 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:59:19,061 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:59:19,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:59:19,063 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:59:19,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:59:19,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:59:19,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:59:19,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:59:19,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:59:19,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:59:19,065 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:59:19,065 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:59:19,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:59:19,066 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:59:19,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:59:19,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:59:19,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:59:19,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:59:19,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:59:19,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:59:19,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:59:19,070 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:59:19,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:59:19,071 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:59:19,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:59:19,071 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:59:19,071 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 [2021-11-03 03:59:19,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:59:19,434 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:59:19,437 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:59:19,439 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:59:19,440 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:59:19,441 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-03 03:59:19,535 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/92c331047/c02e0da744b04121b4b3915e922e280f/FLAG4a8d2c3b0 [2021-11-03 03:59:20,185 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:59:20,186 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-03 03:59:20,196 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/92c331047/c02e0da744b04121b4b3915e922e280f/FLAG4a8d2c3b0 [2021-11-03 03:59:20,504 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/92c331047/c02e0da744b04121b4b3915e922e280f [2021-11-03 03:59:20,509 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:59:20,510 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:59:20,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:20,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:59:20,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:59:20,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:20,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40792ca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20, skipping insertion in model container [2021-11-03 03:59:20,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:20,535 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:59:20,598 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:59:20,877 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-03 03:59:20,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:20,893 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:59:20,968 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-03 03:59:20,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:20,991 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:59:20,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20 WrapperNode [2021-11-03 03:59:20,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:20,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:59:20,993 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:59:20,993 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:59:21,003 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,080 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:59:21,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:59:21,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:59:21,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:59:21,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,093 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:59:21,177 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:59:21,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:59:21,178 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:59:21,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (1/1) ... [2021-11-03 03:59:21,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:59:21,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:59:21,232 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:59:21,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:59:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 03:59:21,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:59:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-03 03:59:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 03:59:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-03 03:59:21,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:59:21,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:59:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 03:59:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-11-03 03:59:21,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:59:22,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:59:22,538 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-11-03 03:59:22,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:22 BoogieIcfgContainer [2021-11-03 03:59:22,542 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:59:22,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:59:22,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:59:22,549 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:59:22,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:20" (1/3) ... [2021-11-03 03:59:22,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7850b633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:22, skipping insertion in model container [2021-11-03 03:59:22,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:20" (2/3) ... [2021-11-03 03:59:22,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7850b633 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:22, skipping insertion in model container [2021-11-03 03:59:22,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:22" (3/3) ... [2021-11-03 03:59:22,554 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2021-11-03 03:59:22,561 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:59:22,562 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 03:59:22,620 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:59:22,627 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 03:59:22,628 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 03:59:22,656 INFO L276 IsEmpty]: Start isEmpty. Operand has 91 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 90 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:22,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-03 03:59:22,676 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:22,677 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:22,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:59:22,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:22,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1224151813, now seen corresponding path program 1 times [2021-11-03 03:59:22,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:22,713 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936828231] [2021-11-03 03:59:22,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:22,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:22,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:22,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:22,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936828231] [2021-11-03 03:59:22,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936828231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:22,988 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:22,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 03:59:22,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275500437] [2021-11-03 03:59:22,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:59:22,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:23,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:59:23,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:59:23,028 INFO L87 Difference]: Start difference. First operand has 91 states, 89 states have (on average 1.7415730337078652) internal successors, (155), 90 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:23,083 INFO L93 Difference]: Finished difference Result 181 states and 309 transitions. [2021-11-03 03:59:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:59:23,084 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-03 03:59:23,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:23,100 INFO L225 Difference]: With dead ends: 181 [2021-11-03 03:59:23,101 INFO L226 Difference]: Without dead ends: 88 [2021-11-03 03:59:23,105 INFO L786 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 [2021-11-03 03:59:23,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-03 03:59:23,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-03 03:59:23,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 87 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 118 transitions. [2021-11-03 03:59:23,171 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 118 transitions. Word has length 13 [2021-11-03 03:59:23,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:23,172 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 118 transitions. [2021-11-03 03:59:23,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:23,172 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 118 transitions. [2021-11-03 03:59:23,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-03 03:59:23,173 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:23,173 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:23,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 03:59:23,173 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:59:23,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1736900291, now seen corresponding path program 1 times [2021-11-03 03:59:23,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:23,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74128785] [2021-11-03 03:59:23,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:23,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:23,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:59:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:59:23,291 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 03:59:23,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74128785] [2021-11-03 03:59:23,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74128785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 03:59:23,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:59:23,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 03:59:23,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392379998] [2021-11-03 03:59:23,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:59:23,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 03:59:23,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:59:23,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:59:23,296 INFO L87 Difference]: Start difference. First operand 88 states and 118 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:23,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:59:23,352 INFO L93 Difference]: Finished difference Result 168 states and 227 transitions. [2021-11-03 03:59:23,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:59:23,353 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-03 03:59:23,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:59:23,356 INFO L225 Difference]: With dead ends: 168 [2021-11-03 03:59:23,357 INFO L226 Difference]: Without dead ends: 88 [2021-11-03 03:59:23,359 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:59:23,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-11-03 03:59:23,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-11-03 03:59:23,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 87 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:23,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 117 transitions. [2021-11-03 03:59:23,382 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 117 transitions. Word has length 16 [2021-11-03 03:59:23,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:59:23,383 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 117 transitions. [2021-11-03 03:59:23,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 03:59:23,384 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 117 transitions. [2021-11-03 03:59:23,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-03 03:59:23,388 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:59:23,390 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:59:23,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 03:59:23,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 03:59:23,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:59:23,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1734930982, now seen corresponding path program 1 times [2021-11-03 03:59:23,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 03:59:23,394 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550280546] [2021-11-03 03:59:23,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:59:23,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 03:59:23,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:59:23,731 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-03 03:59:23,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-03 03:59:23,981 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-03 03:59:23,982 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-03 03:59:23,983 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-03 03:59:23,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 03:59:23,990 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-03 03:59:23,993 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-03 03:59:24,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:59:24 BoogieIcfgContainer [2021-11-03 03:59:24,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-03 03:59:24,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-03 03:59:24,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-03 03:59:24,093 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-03 03:59:24,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:22" (3/4) ... [2021-11-03 03:59:24,097 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-03 03:59:24,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-03 03:59:24,102 INFO L168 Benchmark]: Toolchain (without parser) took 3589.14 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 63.3 MB in the beginning and 71.5 MB in the end (delta: -8.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:24,103 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:59:24,111 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.06 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 73.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:24,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.53 ms. Allocated memory is still 102.8 MB. Free memory was 73.2 MB in the beginning and 69.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:24,114 INFO L168 Benchmark]: Boogie Preprocessor took 89.64 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 66.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:24,115 INFO L168 Benchmark]: RCFGBuilder took 1364.51 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 84.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:24,116 INFO L168 Benchmark]: TraceAbstraction took 1546.64 ms. Allocated memory is still 123.7 MB. Free memory was 84.9 MB in the beginning and 71.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2021-11-03 03:59:24,117 INFO L168 Benchmark]: Witness Printer took 6.44 ms. Allocated memory is still 123.7 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:59:24,127 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 102.8 MB. Free memory is still 80.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 477.06 ms. Allocated memory is still 102.8 MB. Free memory was 63.1 MB in the beginning and 73.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.53 ms. Allocated memory is still 102.8 MB. Free memory was 73.2 MB in the beginning and 69.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 89.64 ms. Allocated memory is still 102.8 MB. Free memory was 69.9 MB in the beginning and 66.4 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1364.51 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.4 MB in the beginning and 84.9 MB in the end (delta: -18.5 MB). Peak memory consumption was 38.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1546.64 ms. Allocated memory is still 123.7 MB. Free memory was 84.9 MB in the beginning and 71.5 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 6.44 ms. Allocated memory is still 123.7 MB. Free memory is still 71.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 288]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 164, overapproximation of someUnaryDOUBLEoperation at line 54, overapproximation of someBinaryArithmeticDOUBLEoperation at line 165, overapproximation of bitwiseAnd at line 162, overapproximation of someBinaryDOUBLEComparisonOperation at line 287. Possible FailurePath: [L39-L44] static const double atanhi_atan[] = { 4.63647609000806093515e-01, 7.85398163397448278999e-01, 9.82793723247329054082e-01, 1.57079632679489655800e+00, }; [L46-L51] static const double atanlo_atan[] = { 2.26987774529616870924e-17, 3.06161699786838301793e-17, 1.39033110312309984516e-17, 6.12323399573676603587e-17, }; [L53-L60] static const double aT_atan[] = { 3.33333333333329318027e-01, -1.99999999998764832476e-01, 1.42857142725034663711e-01, -1.11111104054623557880e-01, 9.09088713343650656196e-02, -7.69187620504482999495e-02, 6.66107313738753120669e-02, -5.83357013379057348645e-02, 4.97687799461593236017e-02, -3.65315727442169155270e-02, 1.62858201153657823623e-02, }; [L62-L64] static const double one_atan = 1.0, pi_o_4 = 7.8539816339744827900E-01, pi_o_2 = 1.5707963267948965580E+00, pi = 3.1415926535897931160E+00, huge_atan = 1.0e300; [L141-L142] static const double tiny_atan2 = 1.0e-300, zero_atan2 = 0.0, pi_lo_atan2 = 1.2246467991473531772E-16; [L278] double x = __VERIFIER_nondet_double(); [L279] double y = -1.0 / 0.0; [L262] __int32_t hx; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L264] ieee_double_shape_type gh_u; [L265] gh_u.value = (x) [L266] EXPR gh_u.parts.msw [L266] (hx) = gh_u.parts.msw [L268] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L282] isfinite_double(x) && isinf_double(y) [L248] __int32_t hx, lx; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L250] ieee_double_shape_type ew_u; [L251] ew_u.value = (x) [L252] EXPR ew_u.parts.msw [L252] (hx) = ew_u.parts.msw [L253] EXPR ew_u.parts.lsw [L253] (lx) = ew_u.parts.lsw [L255] hx &= 0x7fffffff [L256] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L257] hx = 0x7ff00000 - hx [L258] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L282] isfinite_double(x) && isinf_double(y) VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L282] COND TRUE isfinite_double(x) && isinf_double(y) [L145] double z; [L146] __int32_t k, m, hx, hy, ix, iy; [L147] __uint32_t lx, ly; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L150] ieee_double_shape_type ew_u; [L151] ew_u.value = (x) [L152] EXPR ew_u.parts.msw [L152] (hx) = ew_u.parts.msw [L153] EXPR ew_u.parts.lsw [L153] (lx) = ew_u.parts.lsw [L155] ix = hx & 0x7fffffff VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L157] ieee_double_shape_type ew_u; [L158] ew_u.value = (y) [L159] EXPR ew_u.parts.msw [L159] (hy) = ew_u.parts.msw [L160] EXPR ew_u.parts.lsw [L160] (ly) = ew_u.parts.lsw [L162] iy = hy & 0x7fffffff VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L163-L164] COND TRUE ((ix | ((lx | -lx) >> 31)) > 0x7ff00000) || ((iy | ((ly | -ly) >> 31)) > 0x7ff00000) [L165] return x + y; VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L284] double res = __ieee754_atan2(y, x); [L287] COND TRUE res != -pi_o_2 VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] [L288] reach_error() VAL [aT_atan={10:0}, atanhi_atan={7:0}, atanlo_atan={5:0}, huge_atan=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, one_atan=1, pi=785398163397448279/250000000000000000, pi_lo_atan2=3061616997868382943/25000000000000000000000000000000000, pi_o_2=785398163397448279/500000000000000000, pi_o_4=785398163397448279/1000000000000000000, tiny_atan2=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, zero_atan2=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 240 SDtfs, 0 SDslu, 112 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 28 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-03 03:59:24,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH --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 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:59:27,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:59:27,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:59:27,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:59:27,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:59:27,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:59:27,243 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:59:27,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:59:27,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:59:27,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:59:27,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:59:27,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:59:27,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:59:27,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:59:27,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:59:27,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:59:27,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:59:27,268 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:59:27,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:59:27,273 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:59:27,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:59:27,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:59:27,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:59:27,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:59:27,298 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:59:27,299 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:59:27,299 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:59:27,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:59:27,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:59:27,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:59:27,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:59:27,305 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:59:27,306 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:59:27,317 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:59:27,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:59:27,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:59:27,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:59:27,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:59:27,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:59:27,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:59:27,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:59:27,334 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:59:27,395 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:59:27,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:59:27,397 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:59:27,397 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:59:27,397 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:59:27,397 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:59:27,398 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:59:27,398 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:59:27,398 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:59:27,400 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:59:27,401 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:59:27,402 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:59:27,402 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:59:27,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:59:27,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:59:27,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:59:27,403 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:59:27,403 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:59:27,403 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:59:27,403 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:59:27,404 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:59:27,404 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:59:27,404 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:59:27,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:59:27,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:59:27,405 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:59:27,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:59:27,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:59:27,406 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:59:27,406 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:59:27,406 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:59:27,406 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:59:27,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:59:27,407 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:59:27,407 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:59:27,407 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 59d0560b101a1a446649456c356a26c615f3850e7b7d16baa2e50b6bf6dee850 [2021-11-03 03:59:27,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:59:28,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:59:28,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:59:28,009 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:59:28,010 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:59:28,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-03 03:59:28,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/13234469c/2f25259c0538400e9e3876f323f7e651/FLAG3b7c31eb0 [2021-11-03 03:59:28,785 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:59:28,785 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c [2021-11-03 03:59:28,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/13234469c/2f25259c0538400e9e3876f323f7e651/FLAG3b7c31eb0 [2021-11-03 03:59:29,030 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/data/13234469c/2f25259c0538400e9e3876f323f7e651 [2021-11-03 03:59:29,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:59:29,035 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:59:29,037 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:29,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:59:29,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:59:29,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b8583be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29, skipping insertion in model container [2021-11-03 03:59:29,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:59:29,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:59:29,489 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-03 03:59:29,517 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:29,542 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:59:29,647 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/sv-benchmarks/c/float-newlib/double_req_bl_0684b.c[6891,6904] [2021-11-03 03:59:29,654 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:59:29,701 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:59:29,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29 WrapperNode [2021-11-03 03:59:29,701 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:59:29,704 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:59:29,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:59:29,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:59:29,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:59:29,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:59:29,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:59:29,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:59:29,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,959 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,971 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:59:29,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:59:29,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:59:29,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:59:29,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (1/1) ... [2021-11-03 03:59:29,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:59:30,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:59:30,021 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:59:30,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:59:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-03 03:59:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-03 03:59:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:59:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:59:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE8 [2021-11-03 03:59:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:59:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:59:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:59:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:59:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 04:00:09,311 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 04:00:09,312 INFO L299 CfgBuilder]: Removed 52 assume(true) statements. [2021-11-03 04:00:09,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:09 BoogieIcfgContainer [2021-11-03 04:00:09,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 04:00:09,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 04:00:09,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 04:00:09,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 04:00:09,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:29" (1/3) ... [2021-11-03 04:00:09,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c932d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:09, skipping insertion in model container [2021-11-03 04:00:09,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:29" (2/3) ... [2021-11-03 04:00:09,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20c932d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:09, skipping insertion in model container [2021-11-03 04:00:09,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:09" (3/3) ... [2021-11-03 04:00:09,326 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0684b.c [2021-11-03 04:00:09,333 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 04:00:09,334 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-03 04:00:09,412 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 04:00:09,426 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 04:00:09,427 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-03 04:00:09,476 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 123 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:09,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-03 04:00:09,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:09,489 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:09,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:09,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash -617567418, now seen corresponding path program 1 times [2021-11-03 04:00:09,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:09,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1424476992] [2021-11-03 04:00:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:09,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:09,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:09,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:09,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 04:00:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:10,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 04:00:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:10,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:10,567 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:10,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:11,004 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:11,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1424476992] [2021-11-03 04:00:11,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1424476992] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:11,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:11,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 04:00:11,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123580573] [2021-11-03 04:00:11,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 04:00:11,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:11,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 04:00:11,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:00:11,031 INFO L87 Difference]: Start difference. First operand has 124 states, 122 states have (on average 1.6967213114754098) internal successors, (207), 123 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:11,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:11,068 INFO L93 Difference]: Finished difference Result 246 states and 412 transitions. [2021-11-03 04:00:11,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 04:00:11,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-11-03 04:00:11,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:11,083 INFO L225 Difference]: With dead ends: 246 [2021-11-03 04:00:11,083 INFO L226 Difference]: Without dead ends: 120 [2021-11-03 04:00:11,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 04:00:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-03 04:00:11,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-03 04:00:11,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.4201680672268908) internal successors, (169), 119 states have internal predecessors, (169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 169 transitions. [2021-11-03 04:00:11,175 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 169 transitions. Word has length 15 [2021-11-03 04:00:11,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:11,176 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 169 transitions. [2021-11-03 04:00:11,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.5) internal successors, (15), 2 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:11,176 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 169 transitions. [2021-11-03 04:00:11,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-03 04:00:11,177 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:11,177 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:11,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:11,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:11,385 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash -397782484, now seen corresponding path program 1 times [2021-11-03 04:00:11,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:11,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1449294551] [2021-11-03 04:00:11,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:11,389 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:11,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:11,390 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:11,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 04:00:11,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:12,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-03 04:00:12,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:12,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:13,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:13,022 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:00:13,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1449294551] [2021-11-03 04:00:13,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1449294551] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:00:13,023 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:00:13,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 04:00:13,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715721643] [2021-11-03 04:00:13,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 04:00:13,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:00:13,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 04:00:13,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:13,027 INFO L87 Difference]: Start difference. First operand 120 states and 169 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:13,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:00:13,288 INFO L93 Difference]: Finished difference Result 229 states and 326 transitions. [2021-11-03 04:00:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 04:00:13,289 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-03 04:00:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:00:13,291 INFO L225 Difference]: With dead ends: 229 [2021-11-03 04:00:13,292 INFO L226 Difference]: Without dead ends: 120 [2021-11-03 04:00:13,293 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 04:00:13,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2021-11-03 04:00:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2021-11-03 04:00:13,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.411764705882353) internal successors, (168), 119 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:13,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 168 transitions. [2021-11-03 04:00:13,308 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 168 transitions. Word has length 18 [2021-11-03 04:00:13,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:00:13,309 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 168 transitions. [2021-11-03 04:00:13,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:00:13,309 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 168 transitions. [2021-11-03 04:00:13,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-11-03 04:00:13,310 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:00:13,311 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:00:13,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 04:00:13,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:00:13,537 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:00:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:00:13,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1006577033, now seen corresponding path program 1 times [2021-11-03 04:00:13,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:00:13,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [310297803] [2021-11-03 04:00:13,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:00:13,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:00:13,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:00:13,543 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:00:13,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 04:00:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:00:14,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-03 04:00:14,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:00:19,982 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 50 [2021-11-03 04:00:24,686 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:24,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 86 [2021-11-03 04:00:25,545 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2021-11-03 04:00:30,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:00:30,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:00:36,027 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:36,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 100 treesize of output 92 [2021-11-03 04:00:36,250 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:00:36,251 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 92 [2021-11-03 04:00:36,568 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2021-11-03 04:01:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:14,209 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:01:14,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [310297803] [2021-11-03 04:01:14,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [310297803] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:01:14,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:01:14,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 22 [2021-11-03 04:01:14,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976447045] [2021-11-03 04:01:14,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-11-03 04:01:14,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:01:14,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-11-03 04:01:14,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=397, Unknown=6, NotChecked=0, Total=462 [2021-11-03 04:01:14,213 INFO L87 Difference]: Start difference. First operand 120 states and 168 transitions. Second operand has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:01:48,177 INFO L93 Difference]: Finished difference Result 136 states and 187 transitions. [2021-11-03 04:01:48,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-03 04:01:48,275 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-11-03 04:01:48,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:01:48,276 INFO L225 Difference]: With dead ends: 136 [2021-11-03 04:01:48,276 INFO L226 Difference]: Without dead ends: 63 [2021-11-03 04:01:48,278 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 43.3s TimeCoverageRelationStatistics Valid=217, Invalid=769, Unknown=6, NotChecked=0, Total=992 [2021-11-03 04:01:48,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-11-03 04:01:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2021-11-03 04:01:48,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.2280701754385965) internal successors, (70), 57 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2021-11-03 04:01:48,290 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 22 [2021-11-03 04:01:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:01:48,291 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2021-11-03 04:01:48,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 22 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:01:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2021-11-03 04:01:48,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-03 04:01:48,293 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:01:48,294 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:01:48,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 04:01:48,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:01:48,495 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:01:48,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:01:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -990191373, now seen corresponding path program 1 times [2021-11-03 04:01:48,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:01:48,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163682328] [2021-11-03 04:01:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:01:48,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:01:48,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:01:48,499 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:01:48,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 04:01:48,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:01:48,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:01:49,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:01:55,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:01:55,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:02:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:09,422 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:02:09,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163682328] [2021-11-03 04:02:09,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163682328] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:02:09,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:02:09,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:02:09,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348962856] [2021-11-03 04:02:09,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:02:09,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:02:09,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:02:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:02:09,426 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:40,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:02:40,480 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2021-11-03 04:02:40,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:02:40,727 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-03 04:02:40,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:02:40,728 INFO L225 Difference]: With dead ends: 68 [2021-11-03 04:02:40,728 INFO L226 Difference]: Without dead ends: 62 [2021-11-03 04:02:40,729 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:02:40,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-11-03 04:02:40,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 56. [2021-11-03 04:02:40,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 55 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:40,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2021-11-03 04:02:40,742 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 27 [2021-11-03 04:02:40,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:02:40,742 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2021-11-03 04:02:40,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:02:40,743 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2021-11-03 04:02:40,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-03 04:02:40,745 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:02:40,745 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:02:40,775 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 04:02:40,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:02:40,959 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:02:40,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:02:40,960 INFO L85 PathProgramCache]: Analyzing trace with hash 266488550, now seen corresponding path program 1 times [2021-11-03 04:02:40,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:02:40,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1925233302] [2021-11-03 04:02:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:02:40,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:02:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:02:40,967 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:02:41,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 04:02:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:02:41,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-03 04:02:41,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:02:50,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:02:50,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:03:03,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:03,011 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:03:03,011 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1925233302] [2021-11-03 04:03:03,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1925233302] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:03:03,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:03:03,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 9 [2021-11-03 04:03:03,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579509488] [2021-11-03 04:03:03,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 04:03:03,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:03:03,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 04:03:03,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-03 04:03:03,015 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:34,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:03:34,841 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2021-11-03 04:03:35,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-03 04:03:35,090 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-11-03 04:03:35,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:03:35,091 INFO L225 Difference]: With dead ends: 66 [2021-11-03 04:03:35,091 INFO L226 Difference]: Without dead ends: 56 [2021-11-03 04:03:35,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-03 04:03:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-03 04:03:35,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2021-11-03 04:03:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.2244897959183674) internal successors, (60), 49 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-11-03 04:03:35,109 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 29 [2021-11-03 04:03:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:03:35,109 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-11-03 04:03:35,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-03 04:03:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:03:35,112 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:03:35,112 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:03:35,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 04:03:35,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:03:35,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:03:35,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:03:35,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1159958932, now seen corresponding path program 1 times [2021-11-03 04:03:35,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:03:35,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510977512] [2021-11-03 04:03:35,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:03:35,329 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:03:35,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:03:35,330 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:03:35,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 04:03:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:03:35,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-03 04:03:35,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:03:39,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:39,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:03:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:03:46,316 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:03:46,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510977512] [2021-11-03 04:03:46,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510977512] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:03:46,317 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:03:46,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-03 04:03:46,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636896100] [2021-11-03 04:03:46,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 04:03:46,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:03:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 04:03:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-03 04:03:46,320 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:03:50,292 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-11-03 04:03:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 04:03:50,303 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 04:03:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:03:50,304 INFO L225 Difference]: With dead ends: 55 [2021-11-03 04:03:50,304 INFO L226 Difference]: Without dead ends: 33 [2021-11-03 04:03:50,304 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2021-11-03 04:03:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-03 04:03:50,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-03 04:03:50,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:50,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-11-03 04:03:50,311 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 31 [2021-11-03 04:03:50,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:03:50,312 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-11-03 04:03:50,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:03:50,312 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-11-03 04:03:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-03 04:03:50,314 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:03:50,314 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:03:50,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 04:03:50,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:03:50,519 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:03:50,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:03:50,520 INFO L85 PathProgramCache]: Analyzing trace with hash 378053105, now seen corresponding path program 1 times [2021-11-03 04:03:50,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:03:50,520 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1550471733] [2021-11-03 04:03:50,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:03:50,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:03:50,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:03:50,523 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:03:50,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 04:03:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:03:51,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-03 04:03:51,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:03:53,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 33 [2021-11-03 04:03:57,900 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:03:57,900 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 71 [2021-11-03 04:03:58,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 14 [2021-11-03 04:04:00,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:04:00,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 04:04:05,850 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:04:05,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 70 [2021-11-03 04:04:06,100 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-03 04:04:06,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 72 [2021-11-03 04:04:06,371 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2021-11-03 04:04:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 04:04:40,307 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 04:04:40,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1550471733] [2021-11-03 04:04:40,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1550471733] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 04:04:40,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 04:04:40,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-11-03 04:04:40,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635957908] [2021-11-03 04:04:40,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-03 04:04:40,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 04:04:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-03 04:04:40,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-11-03 04:04:40,311 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:45,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 04:04:45,724 INFO L93 Difference]: Finished difference Result 38 states and 37 transitions. [2021-11-03 04:04:45,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-03 04:04:45,741 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-11-03 04:04:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 04:04:45,742 INFO L225 Difference]: With dead ends: 38 [2021-11-03 04:04:45,742 INFO L226 Difference]: Without dead ends: 33 [2021-11-03 04:04:45,743 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-03 04:04:45,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-03 04:04:45,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-03 04:04:45,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.0) internal successors, (32), 32 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2021-11-03 04:04:45,751 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 31 [2021-11-03 04:04:45,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 04:04:45,751 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2021-11-03 04:04:45,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.071428571428571) internal successors, (57), 14 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 04:04:45,752 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2021-11-03 04:04:45,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-03 04:04:45,753 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 04:04:45,754 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 04:04:45,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-03 04:04:45,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 04:04:45,955 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-03 04:04:45,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 04:04:45,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1188435438, now seen corresponding path program 1 times [2021-11-03 04:04:45,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 04:04:45,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514885094] [2021-11-03 04:04:45,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 04:04:45,957 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 04:04:45,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 04:04:45,958 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 04:04:45,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6613302d-1923-40d5-9c0d-4ed17cc623e0/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-03 04:04:48,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 04:04:48,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-03 04:04:48,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 04:04:52,123 INFO L354 Elim1Store]: treesize reduction 358, result has 15.4 percent of original size [2021-11-03 04:04:52,124 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 8 case distinctions, treesize of input 453 treesize of output 478 [2021-11-03 04:06:21,960 INFO L244 Elim1Store]: Index analysis took 121 ms [2021-11-03 04:06:25,492 INFO L354 Elim1Store]: treesize reduction 293, result has 16.3 percent of original size [2021-11-03 04:06:25,493 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 1 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 34 case distinctions, treesize of input 232 treesize of output 271 [2021-11-03 04:06:25,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:06:25,892 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:06:26,403 INFO L354 Elim1Store]: treesize reduction 93, result has 8.8 percent of original size [2021-11-03 04:06:26,404 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 11 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 256 treesize of output 271 [2021-11-03 04:09:18,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,677 INFO L244 Elim1Store]: Index analysis took 104 ms [2021-11-03 04:09:18,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,851 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:09:18,853 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:09:20,394 INFO L354 Elim1Store]: treesize reduction 146, result has 18.0 percent of original size [2021-11-03 04:09:20,395 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 303 treesize of output 332 [2021-11-03 04:09:20,652 INFO L244 Elim1Store]: Index analysis took 121 ms [2021-11-03 04:09:24,143 INFO L354 Elim1Store]: treesize reduction 368, result has 15.0 percent of original size [2021-11-03 04:09:24,144 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 43 case distinctions, treesize of input 311 treesize of output 356 [2021-11-03 04:12:13,726 INFO L354 Elim1Store]: treesize reduction 368, result has 15.0 percent of original size [2021-11-03 04:12:13,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 43 case distinctions, treesize of input 315 treesize of output 360 [2021-11-03 04:12:13,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:13,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:13,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:13,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:13,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:13,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:13,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:14,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:14,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-03 04:12:14,052 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 04:12:15,395 INFO L354 Elim1Store]: treesize reduction 146, result has 18.0 percent of original size [2021-11-03 04:12:15,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 11 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 342 treesize of output 371