./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V --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 5343b340ea8da46bc6acd6408dd3dbd3223330cf8901c5f3b9950638a460ce9a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:31:43,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:31:43,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:31:43,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:31:43,159 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:31:43,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:31:43,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:31:43,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:31:43,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:31:43,180 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:31:43,181 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:31:43,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:31:43,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:31:43,186 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:31:43,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:31:43,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:31:43,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:31:43,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:31:43,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:31:43,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:31:43,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:31:43,210 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:31:43,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:31:43,214 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:31:43,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:31:43,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:31:43,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:31:43,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:31:43,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:31:43,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:31:43,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:31:43,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:31:43,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:31:43,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:31:43,237 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:31:43,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:31:43,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:31:43,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:31:43,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:31:43,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:31:43,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:31:43,241 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-23 03:31:43,287 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:31:43,287 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:31:43,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:31:43,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:31:43,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:31:43,297 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:31:43,297 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:31:43,297 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:31:43,297 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:31:43,298 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:31:43,299 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:31:43,299 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:31:43,299 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:31:43,300 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:31:43,300 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:31:43,300 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:31:43,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:31:43,301 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:31:43,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:31:43,302 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 03:31:43,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:31:43,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 03:31:43,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:31:43,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:31:43,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:31:43,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:31:43,307 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 03:31:43,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:31:43,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:31:43,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:31:43,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:31:43,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:31:43,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:43,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:31:43,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:31:43,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:31:43,310 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:31:43,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:31:43,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:31:43,311 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:31:43,311 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:31:43,311 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_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5343b340ea8da46bc6acd6408dd3dbd3223330cf8901c5f3b9950638a460ce9a [2021-11-23 03:31:43,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:31:43,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:31:43,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:31:43,638 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:31:43,639 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:31:43,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c [2021-11-23 03:31:43,728 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/data/4282e45f6/26ae672dc0234ab0ba1c5757bae0bfbf/FLAG92df11b89 [2021-11-23 03:31:44,150 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:31:44,151 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c [2021-11-23 03:31:44,164 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/data/4282e45f6/26ae672dc0234ab0ba1c5757bae0bfbf/FLAG92df11b89 [2021-11-23 03:31:44,562 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/data/4282e45f6/26ae672dc0234ab0ba1c5757bae0bfbf [2021-11-23 03:31:44,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:31:44,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:31:44,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:44,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:31:44,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:31:44,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:44,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68f0f80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44, skipping insertion in model container [2021-11-23 03:31:44,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:44,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:31:44,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:31:44,814 WARN L230 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_1d891cda-3904-4252-8d19-7d80598e354a/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c[535,548] [2021-11-23 03:31:44,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:44,846 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:31:44,861 WARN L230 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_1d891cda-3904-4252-8d19-7d80598e354a/sv-benchmarks/c/nla-digbench-scaling/fermat1-ll_valuebound20.c[535,548] [2021-11-23 03:31:44,876 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:31:44,902 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:31:44,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44 WrapperNode [2021-11-23 03:31:44,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:31:44,907 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:44,907 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:31:44,908 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:31:44,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:44,939 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:44,971 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 56 [2021-11-23 03:31:44,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:31:44,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:31:44,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:31:44,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:31:44,984 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:44,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:44,994 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:44,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:45,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:45,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:45,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:45,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:31:45,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:31:45,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:31:45,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:31:45,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (1/1) ... [2021-11-23 03:31:45,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:31:45,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:45,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:31:45,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:31:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:31:45,123 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:31:45,123 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:31:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:31:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:31:45,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:31:45,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-23 03:31:45,125 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-23 03:31:45,188 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:31:45,190 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:31:45,347 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:31:45,372 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:31:45,372 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-23 03:31:45,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:45 BoogieIcfgContainer [2021-11-23 03:31:45,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:31:45,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:31:45,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:31:45,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:31:45,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:31:44" (1/3) ... [2021-11-23 03:31:45,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2338bc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:45, skipping insertion in model container [2021-11-23 03:31:45,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:31:44" (2/3) ... [2021-11-23 03:31:45,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2338bc1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:31:45, skipping insertion in model container [2021-11-23 03:31:45,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:45" (3/3) ... [2021-11-23 03:31:45,392 INFO L111 eAbstractionObserver]: Analyzing ICFG fermat1-ll_valuebound20.c [2021-11-23 03:31:45,398 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:31:45,398 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:31:45,453 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:31:45,462 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 [2021-11-23 03:31:45,462 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:31:45,482 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-23 03:31:45,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 03:31:45,488 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:45,489 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:45,490 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1333631252, now seen corresponding path program 1 times [2021-11-23 03:31:45,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:45,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795604660] [2021-11-23 03:31:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:45,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:45,621 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:45,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1623931316] [2021-11-23 03:31:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:45,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:45,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:45,625 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:45,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:31:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:45,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 03:31:45,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:46,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:31:46,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:31:46,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:46,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795604660] [2021-11-23 03:31:46,204 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:31:46,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1623931316] [2021-11-23 03:31:46,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1623931316] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:46,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:31:46,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:31:46,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217538849] [2021-11-23 03:31:46,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:46,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:31:46,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:46,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:31:46,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:31:46,252 INFO L87 Difference]: Start difference. First operand has 27 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:31:48,360 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:31:50,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:31:50,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:50,884 INFO L93 Difference]: Finished difference Result 61 states and 99 transitions. [2021-11-23 03:31:50,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:31:50,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 20 [2021-11-23 03:31:50,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:50,898 INFO L225 Difference]: With dead ends: 61 [2021-11-23 03:31:50,898 INFO L226 Difference]: Without dead ends: 39 [2021-11-23 03:31:50,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:31:50,906 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 12 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:50,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 94 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 56 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 03:31:50,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-11-23 03:31:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-11-23 03:31:50,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 03:31:50,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 51 transitions. [2021-11-23 03:31:50,960 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 51 transitions. Word has length 20 [2021-11-23 03:31:50,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:50,960 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 51 transitions. [2021-11-23 03:31:50,961 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-11-23 03:31:50,961 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 51 transitions. [2021-11-23 03:31:50,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-23 03:31:50,963 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:50,963 INFO L514 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:50,991 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:51,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-23 03:31:51,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:51,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:51,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1820027827, now seen corresponding path program 1 times [2021-11-23 03:31:51,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:51,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858770019] [2021-11-23 03:31:51,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:51,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:51,197 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:51,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [736636492] [2021-11-23 03:31:51,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:51,209 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:51,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:51,210 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:51,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:31:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:51,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:31:51,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:51,515 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:31:51,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:51,785 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-23 03:31:51,785 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:51,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858770019] [2021-11-23 03:31:51,787 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:31:51,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736636492] [2021-11-23 03:31:51,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736636492] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:31:51,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [373258450] [2021-11-23 03:31:51,841 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2021-11-23 03:31:51,841 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:31:51,846 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:31:51,851 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:31:51,852 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:31:52,681 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 161 for LOIs [2021-11-23 03:31:52,991 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2021-11-23 03:31:53,020 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:31:55,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [373258450] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:31:55,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:31:55,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [8, 8] total 22 [2021-11-23 03:31:55,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504682787] [2021-11-23 03:31:55,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:31:55,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:31:55,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:31:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:31:55,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:31:55,531 INFO L87 Difference]: Start difference. First operand 38 states and 51 transitions. Second operand has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:31:55,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:31:55,829 INFO L93 Difference]: Finished difference Result 49 states and 60 transitions. [2021-11-23 03:31:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-23 03:31:55,830 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 26 [2021-11-23 03:31:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:31:55,831 INFO L225 Difference]: With dead ends: 49 [2021-11-23 03:31:55,831 INFO L226 Difference]: Without dead ends: 42 [2021-11-23 03:31:55,832 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2021-11-23 03:31:55,834 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:31:55,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 68 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 95 Invalid, 0 Unknown, 34 Unchecked, 0.3s Time] [2021-11-23 03:31:55,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-23 03:31:55,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-11-23 03:31:55,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-23 03:31:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2021-11-23 03:31:55,855 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 26 [2021-11-23 03:31:55,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:31:55,857 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2021-11-23 03:31:55,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-23 03:31:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2021-11-23 03:31:55,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-23 03:31:55,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:31:55,860 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:31:55,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:31:56,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-23 03:31:56,083 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:31:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:31:56,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1140063161, now seen corresponding path program 1 times [2021-11-23 03:31:56,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:31:56,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634780377] [2021-11-23 03:31:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:56,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:31:56,111 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:31:56,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2064992324] [2021-11-23 03:31:56,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:31:56,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:31:56,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:31:56,124 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:31:56,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:31:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:31:56,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2021-11-23 03:31:56,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:31:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 03:31:58,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:31:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-23 03:31:58,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:31:58,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634780377] [2021-11-23 03:31:58,733 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:31:58,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064992324] [2021-11-23 03:31:58,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064992324] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:31:58,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [674165708] [2021-11-23 03:31:58,737 INFO L159 IcfgInterpreter]: Started Sifa with 21 locations of interest [2021-11-23 03:31:58,738 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:31:58,740 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:31:58,740 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:31:58,740 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:32:00,707 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 133 for LOIs [2021-11-23 03:32:00,986 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2021-11-23 03:32:01,006 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:32:03,993 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '752#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 03:32:03,993 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:32:03,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:32:03,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2021-11-23 03:32:03,994 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547150074] [2021-11-23 03:32:03,994 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:32:03,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 03:32:03,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:03,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 03:32:03,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2021-11-23 03:32:03,997 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:32:04,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:04,110 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2021-11-23 03:32:04,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-23 03:32:04,111 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) Word has length 34 [2021-11-23 03:32:04,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:04,114 INFO L225 Difference]: With dead ends: 58 [2021-11-23 03:32:04,119 INFO L226 Difference]: Without dead ends: 56 [2021-11-23 03:32:04,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=127, Invalid=629, Unknown=0, NotChecked=0, Total=756 [2021-11-23 03:32:04,132 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 14 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 48 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:04,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 155 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 48 Unchecked, 0.0s Time] [2021-11-23 03:32:04,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-23 03:32:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 48. [2021-11-23 03:32:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 30 states have (on average 1.2) internal successors, (36), 32 states have internal predecessors, (36), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 03:32:04,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2021-11-23 03:32:04,161 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 34 [2021-11-23 03:32:04,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:04,162 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2021-11-23 03:32:04,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 9 states have internal predecessors, (26), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-23 03:32:04,162 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2021-11-23 03:32:04,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-11-23 03:32:04,164 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:04,165 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:04,206 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:32:04,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:04,379 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:04,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:04,380 INFO L85 PathProgramCache]: Analyzing trace with hash -995495760, now seen corresponding path program 1 times [2021-11-23 03:32:04,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:04,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609165341] [2021-11-23 03:32:04,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:04,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:04,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:32:04,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [501940922] [2021-11-23 03:32:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:04,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:04,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:04,394 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:32:04,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:32:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:04,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-23 03:32:04,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:32:11,428 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:32:11,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:32:12,295 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-23 03:32:12,295 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609165341] [2021-11-23 03:32:12,296 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:32:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501940922] [2021-11-23 03:32:12,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501940922] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:32:12,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1565276563] [2021-11-23 03:32:12,300 INFO L159 IcfgInterpreter]: Started Sifa with 24 locations of interest [2021-11-23 03:32:12,300 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:32:12,301 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:32:12,301 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:32:12,301 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:32:15,146 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 8 for LOIs [2021-11-23 03:32:15,162 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2021-11-23 03:32:15,182 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:32:26,032 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1177#(and (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-23 03:32:26,032 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:32:26,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:32:26,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 10 [2021-11-23 03:32:26,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17740912] [2021-11-23 03:32:26,033 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:32:26,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 03:32:26,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 03:32:26,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=520, Unknown=5, NotChecked=0, Total=650 [2021-11-23 03:32:26,038 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:32:31,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:32:35,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:32:35,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:32:35,487 INFO L93 Difference]: Finished difference Result 64 states and 80 transitions. [2021-11-23 03:32:35,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:32:35,488 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 41 [2021-11-23 03:32:35,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:32:35,490 INFO L225 Difference]: With dead ends: 64 [2021-11-23 03:32:35,490 INFO L226 Difference]: Without dead ends: 60 [2021-11-23 03:32:35,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 90 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 16.1s TimeCoverageRelationStatistics Valid=139, Invalid=612, Unknown=5, NotChecked=0, Total=756 [2021-11-23 03:32:35,492 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:32:35,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 116 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 122 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-23 03:32:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-11-23 03:32:35,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2021-11-23 03:32:35,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 12 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2021-11-23 03:32:35,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2021-11-23 03:32:35,508 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 41 [2021-11-23 03:32:35,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:32:35,509 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2021-11-23 03:32:35,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 9 states have internal predecessors, (30), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:32:35,510 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2021-11-23 03:32:35,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-11-23 03:32:35,512 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:32:35,512 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:32:35,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-23 03:32:35,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:35,727 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:32:35,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:32:35,727 INFO L85 PathProgramCache]: Analyzing trace with hash -224296803, now seen corresponding path program 1 times [2021-11-23 03:32:35,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:32:35,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397854664] [2021-11-23 03:32:35,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:35,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:32:35,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 03:32:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1141416183] [2021-11-23 03:32:35,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:32:35,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:32:35,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:32:35,741 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:32:35,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:32:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:32:35,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 03:32:35,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:32:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-23 03:32:36,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:32:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-23 03:32:36,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:32:36,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397854664] [2021-11-23 03:32:36,588 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 03:32:36,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141416183] [2021-11-23 03:32:36,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141416183] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:32:36,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [302038700] [2021-11-23 03:32:36,592 INFO L159 IcfgInterpreter]: Started Sifa with 25 locations of interest [2021-11-23 03:32:36,592 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:32:36,592 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 03:32:36,592 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 03:32:36,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 03:32:44,482 INFO L197 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 10 for LOIs [2021-11-23 03:32:44,493 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 59 for LOIs [2021-11-23 03:32:44,515 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 03:32:58,085 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1693#(and (<= 0 |#NULL.base|) (<= |#NULL.offset| 0) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (= __VERIFIER_assert_~cond 0) (<= |#NULL.base| 0) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|))' at error location [2021-11-23 03:32:58,085 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-23 03:32:58,086 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 03:32:58,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-23 03:32:58,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395394085] [2021-11-23 03:32:58,086 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 03:32:58,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 03:32:58,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:32:58,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 03:32:58,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2021-11-23 03:32:58,089 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 03:33:00,125 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:02,517 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:04,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:06,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:08,620 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:10,709 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:12,715 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 03:33:12,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:33:12,754 INFO L93 Difference]: Finished difference Result 114 states and 143 transitions. [2021-11-23 03:33:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:33:12,754 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) Word has length 54 [2021-11-23 03:33:12,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:33:12,755 INFO L225 Difference]: With dead ends: 114 [2021-11-23 03:33:12,755 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 03:33:12,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 123 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 466 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-11-23 03:33:12,758 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 24 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:33:12,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 147 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 147 Invalid, 7 Unknown, 0 Unchecked, 14.6s Time] [2021-11-23 03:33:12,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 03:33:12,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 03:33:12,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 03:33:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 03:33:12,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 54 [2021-11-23 03:33:12,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:33:12,761 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 03:33:12,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (11), 5 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 03:33:12,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 03:33:12,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 03:33:12,764 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 03:33:12,787 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 03:33:12,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:33:12,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 03:33:18,518 WARN L227 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 122 DAG size of output: 92 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:33:27,535 WARN L227 SmtUtils]: Spent 8.92s on a formula simplification. DAG size of input: 122 DAG size of output: 92 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:33:34,152 WARN L227 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 127 DAG size of output: 85 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:33:39,713 WARN L227 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 127 DAG size of output: 85 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:33:49,728 WARN L227 SmtUtils]: Spent 10.01s on a formula simplification. DAG size of input: 117 DAG size of output: 84 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2021-11-23 03:33:50,169 INFO L854 garLoopResultBuilder]: At program point L35-2(lines 35 55) the Hoare annotation is: (let ((.cse3 (select |#memory_int| 1)) (.cse1 (* 2 |ULTIMATE.start_main_~v~0#1|)) (.cse2 (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 3) 1) (<= 0 |ULTIMATE.start_main_~r~0#1|) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (<= (div (+ .cse1 .cse2 (* (- 1) |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* (- 2) |ULTIMATE.start_main_~u~0#1|)) 4) |ULTIMATE.start_main_~A~0#1|) (= |#NULL.offset| 0) (= (select .cse3 0) 48) (= (select .cse3 1) 0) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ .cse1 .cse2)) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,169 INFO L854 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (<= 0 (+ |ULTIMATE.start_main_~A~0#1| 2147483648)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (<= |ULTIMATE.start_main_~A~0#1| 2147483647) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,169 INFO L858 garLoopResultBuilder]: For program point L23-1(line 23) no Hoare annotation was computed. [2021-11-23 03:33:50,169 INFO L858 garLoopResultBuilder]: For program point L48-1(lines 35 55) no Hoare annotation was computed. [2021-11-23 03:33:50,170 INFO L854 garLoopResultBuilder]: At program point L48-2(lines 35 55) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1)) (.cse14 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse14 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= 13 (select |#length| 2))) (.cse3 (= 2 (select |#length| 1))) (.cse4 (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (not (= (ite (= (let ((.cse19 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse19 0))) (+ (- 2) .cse19) .cse19)) 1) 1 0) 0))) (.cse7 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0))) (.cse8 (= (select |#valid| 1) 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= (select .cse18 1) 0)) (.cse15 (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~v~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= (+ .cse14 1) |ULTIMATE.start_main_~u~0#1|) .cse15 .cse16 .cse17) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse15 .cse16 .cse17)))) [2021-11-23 03:33:50,170 INFO L854 garLoopResultBuilder]: At program point L40-2(lines 40 46) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,170 INFO L854 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (let ((.cse18 (select |#memory_int| 1)) (.cse14 (* 2 |ULTIMATE.start_main_~R~0#1|))) (let ((.cse0 (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ .cse14 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse1 (= (select |#length| 3) 12)) (.cse2 (= 13 (select |#length| 2))) (.cse3 (= 2 (select |#length| 1))) (.cse4 (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0))) (.cse5 (= (select |#valid| 3) 1)) (.cse6 (not (= (ite (= (let ((.cse19 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse19 0))) (+ (- 2) .cse19) .cse19)) 1) 1 0) 0))) (.cse7 (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0))) (.cse8 (= (select |#valid| 1) 1)) (.cse9 (= (select |#valid| 0) 0)) (.cse10 (= (select |#valid| 2) 1)) (.cse11 (= |#NULL.offset| 0)) (.cse12 (= (select .cse18 0) 48)) (.cse13 (= (select .cse18 1) 0)) (.cse15 (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|)))) (.cse16 (< 0 |#StackHeapBarrier|)) (.cse17 (= |#NULL.base| 0))) (or (and .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~v~0#1| 1) .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 (= (+ .cse14 1) |ULTIMATE.start_main_~u~0#1|) .cse15 .cse16 .cse17) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (<= 0 |ULTIMATE.start_main_~r~0#1|) .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse15 .cse16 .cse17)))) [2021-11-23 03:33:50,170 INFO L858 garLoopResultBuilder]: For program point L36-1(lines 35 55) no Hoare annotation was computed. [2021-11-23 03:33:50,170 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 03:33:50,170 INFO L858 garLoopResultBuilder]: For program point L28(line 28) no Hoare annotation was computed. [2021-11-23 03:33:50,170 INFO L861 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: true [2021-11-23 03:33:50,171 INFO L854 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,171 INFO L858 garLoopResultBuilder]: For program point L49-1(lines 48 54) no Hoare annotation was computed. [2021-11-23 03:33:50,171 INFO L854 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (let ((.cse1 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 3) 1) (not (= (ite (= (let ((.cse0 (mod |ULTIMATE.start_main_~A~0#1| 2))) (ite (and (< |ULTIMATE.start_main_~A~0#1| 0) (not (= .cse0 0))) (+ (- 2) .cse0) .cse0)) 1) 1 0) 0)) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse1 0) 48) (= (select .cse1 1) 0) (= (+ (* 4 |ULTIMATE.start_main_~A~0#1|) (* |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~v~0#1|) (* 4 |ULTIMATE.start_main_~r~0#1|) (* 2 |ULTIMATE.start_main_~u~0#1|)) (+ (* 2 |ULTIMATE.start_main_~v~0#1|) (* |ULTIMATE.start_main_~u~0#1| |ULTIMATE.start_main_~u~0#1|))) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,171 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 40 46) no Hoare annotation was computed. [2021-11-23 03:33:50,171 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 03:33:50,171 INFO L854 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (<= 0 (+ |ULTIMATE.start_main_~R~0#1| 2147483648)) (<= |ULTIMATE.start_main_~R~0#1| 2147483647) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 3) 1) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,172 INFO L854 garLoopResultBuilder]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,175 INFO L854 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (select |#memory_int| 1))) (and (not (= (ite (< (+ (* |ULTIMATE.start_main_~R~0#1| |ULTIMATE.start_main_~R~0#1|) 1) (+ (* 2 |ULTIMATE.start_main_~R~0#1|) |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#length| 3) 12) (= 13 (select |#length| 2)) (= 2 (select |#length| 1)) (not (= (ite (and (<= |ULTIMATE.start_main_~A~0#1| 20) (<= 0 |ULTIMATE.start_main_~A~0#1|)) 1 0) 0)) (= (select |#valid| 3) 1) (not (= (ite (and (<= 0 |ULTIMATE.start_main_~R~0#1|) (<= |ULTIMATE.start_main_~R~0#1| 20)) 1 0) 0)) (= (select |#valid| 1) 1) (= (select |#valid| 0) 0) (= (select |#valid| 2) 1) (= |#NULL.offset| 0) (= (select .cse0 0) 48) (= (select .cse0 1) 0) (< 0 |#StackHeapBarrier|) (= |#NULL.base| 0))) [2021-11-23 03:33:50,175 INFO L861 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2021-11-23 03:33:50,175 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2021-11-23 03:33:50,175 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2021-11-23 03:33:50,176 INFO L858 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2021-11-23 03:33:50,176 INFO L858 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2021-11-23 03:33:50,176 INFO L858 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2021-11-23 03:33:50,176 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2021-11-23 03:33:50,177 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2021-11-23 03:33:50,179 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-23 03:33:50,181 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 03:33:50,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 03:33:50 BoogieIcfgContainer [2021-11-23 03:33:50,219 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 03:33:50,220 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 03:33:50,220 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 03:33:50,220 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 03:33:50,221 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:31:45" (3/4) ... [2021-11-23 03:33:50,224 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 03:33:50,230 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2021-11-23 03:33:50,231 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-23 03:33:50,236 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-11-23 03:33:50,236 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2021-11-23 03:33:50,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-11-23 03:33:50,237 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 03:33:50,287 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/witness.graphml [2021-11-23 03:33:50,288 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 03:33:50,288 INFO L158 Benchmark]: Toolchain (without parser) took 125719.90ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 77.6MB in the beginning and 126.8MB in the end (delta: -49.3MB). Peak memory consumption was 205.4kB. Max. memory is 16.1GB. [2021-11-23 03:33:50,289 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:33:50,289 INFO L158 Benchmark]: CACSL2BoogieTranslator took 333.20ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 81.3MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-23 03:33:50,290 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.56ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 79.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 03:33:50,290 INFO L158 Benchmark]: Boogie Preprocessor took 57.26ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.8MB in the end (delta: 885.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:33:50,292 INFO L158 Benchmark]: RCFGBuilder took 349.50ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 67.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 03:33:50,292 INFO L158 Benchmark]: TraceAbstraction took 124835.48ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 67.5MB in the beginning and 130.0MB in the end (delta: -62.4MB). Peak memory consumption was 82.8MB. Max. memory is 16.1GB. [2021-11-23 03:33:50,293 INFO L158 Benchmark]: Witness Printer took 68.03ms. Allocated memory is still 157.3MB. Free memory was 130.0MB in the beginning and 126.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 03:33:50,296 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 107.0MB. Free memory is still 60.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 333.20ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 81.3MB in the end (delta: -3.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.56ms. Allocated memory is still 107.0MB. Free memory was 81.3MB in the beginning and 79.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 57.26ms. Allocated memory is still 107.0MB. Free memory was 79.7MB in the beginning and 78.8MB in the end (delta: 885.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 349.50ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 67.9MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 124835.48ms. Allocated memory was 107.0MB in the beginning and 157.3MB in the end (delta: 50.3MB). Free memory was 67.5MB in the beginning and 130.0MB in the end (delta: -62.4MB). Peak memory consumption was 82.8MB. Max. memory is 16.1GB. * Witness Printer took 68.03ms. Allocated memory is still 157.3MB. Free memory was 130.0MB in the beginning and 126.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 124.7s, OverallIterations: 5, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 37.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 9 mSolverCounterUnknown, 139 SdHoareTripleChecker+Valid, 28.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 118 mSDsluCounter, 580 SdHoareTripleChecker+Invalid, 28.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 82 IncrementalHoareTripleChecker+Unchecked, 502 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 452 IncrementalHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 117 mSDtfsCounter, 452 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 485 GetRequests, 355 SyntacticMatches, 24 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 37.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=4, InterpolantAutomatonStates: 46, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 43 PreInvPairs, 70 NumberOfFragments, 1586 HoareAnnotationTreeSize, 43 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 8128 FormulaSimplificationTreeSizeReductionInter, 37.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 321 ConstructedInterpolants, 8 QuantifiedInterpolants, 1546 SizeOfPredicates, 22 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 9 InterpolantComputations, 1 PerfectInterpolantSequences, 268/284 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: OVERALL_TIME: 1.2s, ICFG_INTERPRETER_ENTERED_PROCEDURES: 3, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 21, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME: 0.4s, TOOLS_POST_CALL_APPLICATIONS: 16, TOOLS_POST_CALL_TIME: 0.5s, TOOLS_POST_RETURN_APPLICATIONS: 10, TOOLS_POST_RETURN_TIME: 0.1s, TOOLS_QUANTIFIERELIM_APPLICATIONS: 40, TOOLS_QUANTIFIERELIM_TIME: 0.9s, TOOLS_QUANTIFIERELIM_MAX_TIME: 0.1s, FLUID_QUERY_TIME: 0.0s, FLUID_QUERIES: 54, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 18, DOMAIN_JOIN_TIME: 0.2s, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME: 0.0s, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME: 0.0s, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME: 0.0s, DOMAIN_ISBOTTOM_APPLICATIONS: 21, DOMAIN_ISBOTTOM_TIME: 0.1s, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME: 0.0s, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 10, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME: 0.0s, CALL_SUMMARIZER_NEW_COMPUTATION_TIME: 0.0s, PROCEDURE_GRAPH_BUILDER_TIME: 0.0s, PATH_EXPR_TIME: 0.0s, REGEX_TO_DAG_TIME: 0.0s, DAG_COMPRESSION_TIME: 0.0s, DAG_COMPRESSION_PROCESSED_NODES: 222, DAG_COMPRESSION_RETAINED_NODES: 58, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && 13 == unknown-#length-unknown[2]) && v == 1) && 2 == unknown-#length-unknown[1]) && !((if A <= 20 && 0 <= A then 1 else 0) == 0)) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && !((if 0 <= R && R <= 20 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 2 * R + 1 == u) && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) || (((((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && !((if A <= 20 && 0 <= A then 1 else 0) == 0)) && \valid[3] == 1) && 0 <= r) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && !((if 0 <= R && R <= 20 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0) - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((((((!((if R * R + 1 < 2 * R + A then 1 else 0) == 0) && unknown-#length-unknown[3] == 12) && 13 == unknown-#length-unknown[2]) && 2 == unknown-#length-unknown[1]) && !((if A <= 20 && 0 <= A then 1 else 0) == 0)) && \valid[3] == 1) && !((if (if A < 0 && !(A % 2 == 0) then -2 + A % 2 else A % 2) == 1 then 1 else 0) == 0)) && !((if 0 <= R && R <= 20 then 1 else 0) == 0)) && \valid[1] == 1) && \valid[0] == 0) && \valid[2] == 1) && #NULL == 0) && unknown-#memory_int-unknown[1][0] == 48) && unknown-#memory_int-unknown[1][1] == 0) && 4 * A + v * v + 4 * r + 2 * u == 2 * v + u * u) && 0 < unknown-#StackHeapBarrier-unknown) && #NULL == 0 - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 03:33:50,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d891cda-3904-4252-8d19-7d80598e354a/bin/utaipan-EQgc7hIp5V/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 Writing output log to file Ultimate.log Result: TRUE