./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f8e1c903 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cfc9b98f01b5740214418c1e274ef62d42bd44052b6c9ba666982a6bcd7671c6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 10:44:04,119 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 10:44:04,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 10:44:04,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 10:44:04,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 10:44:04,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 10:44:04,187 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 10:44:04,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 10:44:04,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 10:44:04,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 10:44:04,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 10:44:04,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 10:44:04,196 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 10:44:04,203 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 10:44:04,205 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 10:44:04,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 10:44:04,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 10:44:04,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 10:44:04,211 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 10:44:04,214 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 10:44:04,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 10:44:04,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 10:44:04,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 10:44:04,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 10:44:04,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 10:44:04,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 10:44:04,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 10:44:04,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 10:44:04,227 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 10:44:04,228 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 10:44:04,228 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 10:44:04,229 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 10:44:04,230 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 10:44:04,231 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 10:44:04,233 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 10:44:04,233 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 10:44:04,234 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 10:44:04,234 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 10:44:04,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 10:44:04,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 10:44:04,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 10:44:04,238 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 10:44:04,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 10:44:04,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 10:44:04,280 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 10:44:04,280 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 10:44:04,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 10:44:04,282 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 10:44:04,282 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 10:44:04,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 10:44:04,282 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 10:44:04,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 10:44:04,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 10:44:04,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 10:44:04,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 10:44:04,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 10:44:04,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 10:44:04,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 10:44:04,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 10:44:04,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 10:44:04,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 10:44:04,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 10:44:04,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 10:44:04,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 10:44:04,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:04,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 10:44:04,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 10:44:04,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 10:44:04,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 10:44:04,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 10:44:04,288 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 10:44:04,289 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 10:44:04,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 10:44:04,290 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 10:44:04,290 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cfc9b98f01b5740214418c1e274ef62d42bd44052b6c9ba666982a6bcd7671c6 [2021-11-09 10:44:04,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 10:44:04,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 10:44:04,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 10:44:04,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 10:44:04,589 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 10:44:04,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2021-11-09 10:44:04,662 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/data/519003d95/1aeaadf2b78c450c86d60a1350883125/FLAG4c3b2c9ee [2021-11-09 10:44:05,143 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 10:44:05,143 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2021-11-09 10:44:05,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/data/519003d95/1aeaadf2b78c450c86d60a1350883125/FLAG4c3b2c9ee [2021-11-09 10:44:05,511 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/data/519003d95/1aeaadf2b78c450c86d60a1350883125 [2021-11-09 10:44:05,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 10:44:05,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 10:44:05,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:05,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 10:44:05,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 10:44:05,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64eea3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05, skipping insertion in model container [2021-11-09 10:44:05,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 10:44:05,545 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 10:44:05,742 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/sv-benchmarks/c/bitvector-loops/diamond_2-1.c[373,386] [2021-11-09 10:44:05,765 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:05,774 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 10:44:05,786 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/sv-benchmarks/c/bitvector-loops/diamond_2-1.c[373,386] [2021-11-09 10:44:05,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 10:44:05,821 INFO L208 MainTranslator]: Completed translation [2021-11-09 10:44:05,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05 WrapperNode [2021-11-09 10:44:05,823 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 10:44:05,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:05,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 10:44:05,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 10:44:05,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,862 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 10:44:05,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 10:44:05,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 10:44:05,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 10:44:05,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,883 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 10:44:05,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 10:44:05,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 10:44:05,899 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 10:44:05,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (1/1) ... [2021-11-09 10:44:05,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 10:44:05,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 10:44:05,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 10:44:05,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 10:44:05,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 10:44:05,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 10:44:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 10:44:05,972 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 10:44:06,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 10:44:06,212 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-09 10:44:06,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:06 BoogieIcfgContainer [2021-11-09 10:44:06,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 10:44:06,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 10:44:06,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 10:44:06,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 10:44:06,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 10:44:05" (1/3) ... [2021-11-09 10:44:06,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6beb9346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:06, skipping insertion in model container [2021-11-09 10:44:06,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 10:44:05" (2/3) ... [2021-11-09 10:44:06,223 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6beb9346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 10:44:06, skipping insertion in model container [2021-11-09 10:44:06,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:06" (3/3) ... [2021-11-09 10:44:06,224 INFO L111 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2021-11-09 10:44:06,230 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 10:44:06,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 10:44:06,277 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 10:44:06,284 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=PETRI_NET, 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 [2021-11-09 10:44:06,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 10:44:06,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:06,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 10:44:06,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:06,302 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 10:44:06,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:06,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:06,308 INFO L85 PathProgramCache]: Analyzing trace with hash 891600039, now seen corresponding path program 1 times [2021-11-09 10:44:06,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:06,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743892193] [2021-11-09 10:44:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:06,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:06,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:06,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:06,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:06,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743892193] [2021-11-09 10:44:06,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743892193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:06,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:06,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 10:44:06,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905547451] [2021-11-09 10:44:06,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 10:44:06,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:06,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 10:44:06,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:44:06,470 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 19 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-09 10:44:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:06,485 INFO L93 Difference]: Finished difference Result 27 states and 39 transitions. [2021-11-09 10:44:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 10:44:06,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-09 10:44:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:06,494 INFO L225 Difference]: With dead ends: 27 [2021-11-09 10:44:06,495 INFO L226 Difference]: Without dead ends: 17 [2021-11-09 10:44:06,497 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 10:44:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-09 10:44:06,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-09 10:44:06,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.6875) internal successors, (27), 16 states have internal predecessors, (27), 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) [2021-11-09 10:44:06,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2021-11-09 10:44:06,533 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 6 [2021-11-09 10:44:06,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:06,534 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2021-11-09 10:44:06,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-09 10:44:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2021-11-09 10:44:06,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-09 10:44:06,535 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:06,535 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-09 10:44:06,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 10:44:06,536 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:06,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash 889693415, now seen corresponding path program 1 times [2021-11-09 10:44:06,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:06,538 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179810384] [2021-11-09 10:44:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:06,539 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:06,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:06,658 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179810384] [2021-11-09 10:44:06,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179810384] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:06,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:06,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:06,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283541660] [2021-11-09 10:44:06,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:06,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:06,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:06,680 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-09 10:44:06,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:06,746 INFO L93 Difference]: Finished difference Result 23 states and 34 transitions. [2021-11-09 10:44:06,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:06,747 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-09 10:44:06,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:06,751 INFO L225 Difference]: With dead ends: 23 [2021-11-09 10:44:06,751 INFO L226 Difference]: Without dead ends: 19 [2021-11-09 10:44:06,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:06,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-09 10:44:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-11-09 10:44:06,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 17 states have internal predecessors, (28), 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) [2021-11-09 10:44:06,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 28 transitions. [2021-11-09 10:44:06,778 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 28 transitions. Word has length 6 [2021-11-09 10:44:06,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:06,779 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 28 transitions. [2021-11-09 10:44:06,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2021-11-09 10:44:06,779 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 28 transitions. [2021-11-09 10:44:06,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 10:44:06,780 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:06,780 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:06,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:44:06,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:06,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:06,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1797740634, now seen corresponding path program 1 times [2021-11-09 10:44:06,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:06,782 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139623669] [2021-11-09 10:44:06,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:06,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:06,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:44:06,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-09 10:44:06,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:44:06,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139623669] [2021-11-09 10:44:06,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139623669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:44:06,853 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:44:06,853 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-09 10:44:06,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997393683] [2021-11-09 10:44:06,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-09 10:44:06,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:44:06,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-09 10:44:06,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:06,859 INFO L87 Difference]: Start difference. First operand 18 states and 28 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-09 10:44:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:44:07,010 INFO L93 Difference]: Finished difference Result 48 states and 78 transitions. [2021-11-09 10:44:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-09 10:44:07,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-09 10:44:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:44:07,013 INFO L225 Difference]: With dead ends: 48 [2021-11-09 10:44:07,013 INFO L226 Difference]: Without dead ends: 33 [2021-11-09 10:44:07,014 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-09 10:44:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-09 10:44:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-11-09 10:44:07,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-09 10:44:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-11-09 10:44:07,020 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 17 [2021-11-09 10:44:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:44:07,020 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-11-09 10:44:07,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-11-09 10:44:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-11-09 10:44:07,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-09 10:44:07,021 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:44:07,022 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:44:07,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-09 10:44:07,022 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:44:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:44:07,023 INFO L85 PathProgramCache]: Analyzing trace with hash -170777494, now seen corresponding path program 1 times [2021-11-09 10:44:07,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:44:07,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61677021] [2021-11-09 10:44:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:44:07,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:44:07,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:44:07,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-09 10:44:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-09 10:44:07,143 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-09 10:44:07,144 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-09 10:44:07,145 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-09 10:44:07,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-09 10:44:07,150 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-11-09 10:44:07,152 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-09 10:44:07,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 10:44:07 BoogieIcfgContainer [2021-11-09 10:44:07,174 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-09 10:44:07,175 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-09 10:44:07,175 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-09 10:44:07,176 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-09 10:44:07,176 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 10:44:06" (3/4) ... [2021-11-09 10:44:07,178 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-09 10:44:07,224 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/witness.graphml [2021-11-09 10:44:07,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-09 10:44:07,226 INFO L168 Benchmark]: Toolchain (without parser) took 1708.95 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 97.5 MB in the beginning and 125.2 MB in the end (delta: -27.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:07,226 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-09 10:44:07,227 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.53 ms. Allocated memory is still 125.8 MB. Free memory was 97.2 MB in the beginning and 100.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:07,227 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 98.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:07,228 INFO L168 Benchmark]: Boogie Preprocessor took 30.85 ms. Allocated memory is still 125.8 MB. Free memory was 98.5 MB in the beginning and 97.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:07,229 INFO L168 Benchmark]: RCFGBuilder took 316.45 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 86.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:07,230 INFO L168 Benchmark]: TraceAbstraction took 957.12 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 86.0 MB in the beginning and 127.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 588.2 kB. Max. memory is 16.1 GB. [2021-11-09 10:44:07,230 INFO L168 Benchmark]: Witness Printer took 48.91 ms. Allocated memory is still 165.7 MB. Free memory was 127.3 MB in the beginning and 125.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-09 10:44:07,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 79.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.53 ms. Allocated memory is still 125.8 MB. Free memory was 97.2 MB in the beginning and 100.4 MB in the end (delta: -3.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 98.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 30.85 ms. Allocated memory is still 125.8 MB. Free memory was 98.5 MB in the beginning and 97.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 316.45 ms. Allocated memory is still 125.8 MB. Free memory was 97.4 MB in the beginning and 86.6 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 957.12 ms. Allocated memory was 125.8 MB in the beginning and 165.7 MB in the end (delta: 39.8 MB). Free memory was 86.0 MB in the beginning and 127.3 MB in the end (delta: -41.2 MB). Peak memory consumption was 588.2 kB. Max. memory is 16.1 GB. * Witness Printer took 48.91 ms. Allocated memory is still 165.7 MB. Free memory was 127.3 MB in the beginning and 125.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned int y = __VERIFIER_nondet_uint(); [L17] COND TRUE x < 99 [L18] COND FALSE !(y % 2 == 0) [L19] x += 2 [L21] COND FALSE !(y % 2 == 0) [L22] x -= 2 [L24] COND FALSE !(y % 2 == 0) [L25] x += 2 [L27] COND FALSE !(y % 2 == 0) [L28] x -= 2 [L30] COND FALSE !(y % 2 == 0) [L31] x += 2 [L33] COND FALSE !(y % 2 == 0) [L34] x -= 4 [L36] COND FALSE !(y % 2 == 0) [L37] x += 4 [L39] COND FALSE !(y % 2 == 0) [L40] x += 2 [L42] COND FALSE !(y % 2 == 0) [L43] x -= 4 [L45] COND FALSE !(y % 2 == 0) [L46] x -= 4 [L17] COND FALSE !(x < 99) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 15 SDslu, 8 SDs, 0 SdLazy, 49 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 35 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-09 10:44:07,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_14d1d8c6-ee7e-404f-ad59-22601f9e9aa6/bin/uautomizer-IVEQpCNsaX/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE