./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/xcsp/AllInterval-013.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_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/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_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/config/AutomizerReach.xml -i ../../sv-benchmarks/c/xcsp/AllInterval-013.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/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_5dde6398-e936-47ff-a26f-f4df19aa88f5/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 a8a2fc417805598eeae764f72d637dc8faae2c799a3420bfb6078bca58fa9a84 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-f8e1c90 [2021-11-09 09:52:57,834 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-09 09:52:57,836 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-09 09:52:57,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-09 09:52:57,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-09 09:52:57,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-09 09:52:57,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-09 09:52:57,874 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-09 09:52:57,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-09 09:52:57,878 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-09 09:52:57,879 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-09 09:52:57,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-09 09:52:57,881 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-09 09:52:57,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-09 09:52:57,884 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-09 09:52:57,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-09 09:52:57,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-09 09:52:57,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-09 09:52:57,891 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-09 09:52:57,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-09 09:52:57,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-09 09:52:57,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-09 09:52:57,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-09 09:52:57,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-09 09:52:57,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-09 09:52:57,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-09 09:52:57,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-09 09:52:57,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-09 09:52:57,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-09 09:52:57,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-09 09:52:57,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-09 09:52:57,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-09 09:52:57,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-09 09:52:57,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-09 09:52:57,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-09 09:52:57,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-09 09:52:57,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-09 09:52:57,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-09 09:52:57,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-09 09:52:57,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-09 09:52:57,923 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-09 09:52:57,925 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-09 09:52:57,977 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-09 09:52:57,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-09 09:52:57,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-09 09:52:57,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-09 09:52:57,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-09 09:52:57,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-09 09:52:57,984 INFO L138 SettingsManager]: * Use SBE=true [2021-11-09 09:52:57,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-09 09:52:57,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-09 09:52:57,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-09 09:52:57,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-09 09:52:57,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-09 09:52:57,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-09 09:52:57,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-09 09:52:57,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-09 09:52:57,986 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-09 09:52:57,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-09 09:52:57,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-09 09:52:57,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-09 09:52:57,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-09 09:52:57,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-09 09:52:57,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-09 09:52:57,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:52:57,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-09 09:52:57,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-09 09:52:57,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-09 09:52:57,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-09 09:52:57,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-09 09:52:57,988 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-09 09:52:57,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-09 09:52:57,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-09 09:52:57,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-09 09:52:57,989 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_5dde6398-e936-47ff-a26f-f4df19aa88f5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a8a2fc417805598eeae764f72d637dc8faae2c799a3420bfb6078bca58fa9a84 [2021-11-09 09:52:58,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-09 09:52:58,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-09 09:52:58,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-09 09:52:58,365 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-09 09:52:58,368 INFO L275 PluginConnector]: CDTParser initialized [2021-11-09 09:52:58,369 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/../../sv-benchmarks/c/xcsp/AllInterval-013.c [2021-11-09 09:52:58,442 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/data/a69889c17/dcd1afe807ac42908d86a1fd2434bd5a/FLAG0b9439443 [2021-11-09 09:52:59,004 INFO L306 CDTParser]: Found 1 translation units. [2021-11-09 09:52:59,004 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/sv-benchmarks/c/xcsp/AllInterval-013.c [2021-11-09 09:52:59,014 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/data/a69889c17/dcd1afe807ac42908d86a1fd2434bd5a/FLAG0b9439443 [2021-11-09 09:52:59,298 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/data/a69889c17/dcd1afe807ac42908d86a1fd2434bd5a [2021-11-09 09:52:59,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-09 09:52:59,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-09 09:52:59,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-09 09:52:59,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-09 09:52:59,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-09 09:52:59,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dd928b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59, skipping insertion in model container [2021-11-09 09:52:59,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,321 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-09 09:52:59,355 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-09 09:52:59,629 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_5dde6398-e936-47ff-a26f-f4df19aa88f5/sv-benchmarks/c/xcsp/AllInterval-013.c[8364,8377] [2021-11-09 09:52:59,636 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:52:59,645 INFO L203 MainTranslator]: Completed pre-run [2021-11-09 09:52:59,723 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_5dde6398-e936-47ff-a26f-f4df19aa88f5/sv-benchmarks/c/xcsp/AllInterval-013.c[8364,8377] [2021-11-09 09:52:59,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-09 09:52:59,758 INFO L208 MainTranslator]: Completed translation [2021-11-09 09:52:59,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59 WrapperNode [2021-11-09 09:52:59,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-09 09:52:59,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-09 09:52:59,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-09 09:52:59,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-09 09:52:59,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,867 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-09 09:52:59,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-09 09:52:59,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-09 09:52:59,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-09 09:52:59,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,904 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,939 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:52:59,986 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-09 09:52:59,987 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-09 09:52:59,987 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-09 09:52:59,987 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-09 09:52:59,988 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (1/1) ... [2021-11-09 09:53:00,007 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-09 09:53:00,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/z3 [2021-11-09 09:53:00,035 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-09 09:53:00,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5dde6398-e936-47ff-a26f-f4df19aa88f5/bin/uautomizer-IVEQpCNsaX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-09 09:53:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-09 09:53:00,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-09 09:53:00,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-09 09:53:00,092 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-09 09:53:01,349 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-09 09:53:01,353 INFO L299 CfgBuilder]: Removed 416 assume(true) statements. [2021-11-09 09:53:01,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:53:01 BoogieIcfgContainer [2021-11-09 09:53:01,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-09 09:53:01,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-09 09:53:01,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-09 09:53:01,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-09 09:53:01,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 09:52:59" (1/3) ... [2021-11-09 09:53:01,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7257cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:53:01, skipping insertion in model container [2021-11-09 09:53:01,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 09:52:59" (2/3) ... [2021-11-09 09:53:01,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7257cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 09:53:01, skipping insertion in model container [2021-11-09 09:53:01,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 09:53:01" (3/3) ... [2021-11-09 09:53:01,369 INFO L111 eAbstractionObserver]: Analyzing ICFG AllInterval-013.c [2021-11-09 09:53:01,376 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-09 09:53:01,377 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-09 09:53:01,455 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-09 09:53:01,466 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 09:53:01,466 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-09 09:53:01,504 INFO L276 IsEmpty]: Start isEmpty. Operand has 442 states, 440 states have (on average 1.4977272727272728) internal successors, (659), 441 states have internal predecessors, (659), 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 09:53:01,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-09 09:53:01,539 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:01,541 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:01,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:01,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:01,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1138496469, now seen corresponding path program 1 times [2021-11-09 09:53:01,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:01,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342716338] [2021-11-09 09:53:01,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:01,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:53:01,939 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 09:53:01,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:53:01,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342716338] [2021-11-09 09:53:01,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342716338] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:53:01,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:53:01,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-09 09:53:01,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218860682] [2021-11-09 09:53:01,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-09 09:53:01,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:53:01,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-09 09:53:01,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-09 09:53:01,994 INFO L87 Difference]: Start difference. First operand has 442 states, 440 states have (on average 1.4977272727272728) internal successors, (659), 441 states have internal predecessors, (659), 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 219.0) internal successors, (438), 2 states have internal predecessors, (438), 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 09:53:02,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 09:53:02,073 INFO L93 Difference]: Finished difference Result 878 states and 1312 transitions. [2021-11-09 09:53:02,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-09 09:53:02,075 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 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 438 [2021-11-09 09:53:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 09:53:02,104 INFO L225 Difference]: With dead ends: 878 [2021-11-09 09:53:02,104 INFO L226 Difference]: Without dead ends: 439 [2021-11-09 09:53:02,114 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 09:53:02,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2021-11-09 09:53:02,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2021-11-09 09:53:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 438 states have (on average 1.0273972602739727) internal successors, (450), 438 states have internal predecessors, (450), 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 09:53:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 450 transitions. [2021-11-09 09:53:02,235 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 450 transitions. Word has length 438 [2021-11-09 09:53:02,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 09:53:02,238 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 450 transitions. [2021-11-09 09:53:02,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 219.0) internal successors, (438), 2 states have internal predecessors, (438), 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 09:53:02,239 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 450 transitions. [2021-11-09 09:53:02,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-09 09:53:02,261 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 09:53:02,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 09:53:02,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-09 09:53:02,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 09:53:02,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 09:53:02,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1694593237, now seen corresponding path program 1 times [2021-11-09 09:53:02,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 09:53:02,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900684598] [2021-11-09 09:53:02,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 09:53:02,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 09:53:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 09:55:01,892 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 09:55:01,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 09:55:01,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900684598] [2021-11-09 09:55:01,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900684598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 09:55:01,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 09:55:01,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [70] imperfect sequences [] total 70 [2021-11-09 09:55:01,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518921529] [2021-11-09 09:55:01,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2021-11-09 09:55:01,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 09:55:01,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2021-11-09 09:55:01,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=4434, Unknown=0, NotChecked=0, Total=4830 [2021-11-09 09:55:01,903 INFO L87 Difference]: Start difference. First operand 439 states and 450 transitions. Second operand has 70 states, 70 states have (on average 6.257142857142857) internal successors, (438), 70 states have internal predecessors, (438), 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 09:56:38,786 WARN L207 SmtUtils]: Spent 6.70 s on a formula simplification. DAG size of input: 653 DAG size of output: 600 [2021-11-09 09:56:52,052 WARN L207 SmtUtils]: Spent 5.46 s on a formula simplification. DAG size of input: 528 DAG size of output: 457 [2021-11-09 09:56:58,598 WARN L207 SmtUtils]: Spent 5.77 s on a formula simplification. DAG size of input: 660 DAG size of output: 531 [2021-11-09 09:57:05,283 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification. DAG size of input: 653 DAG size of output: 581 [2021-11-09 09:57:12,087 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification. DAG size of input: 618 DAG size of output: 547 [2021-11-09 09:57:19,627 WARN L207 SmtUtils]: Spent 6.69 s on a formula simplification. DAG size of input: 616 DAG size of output: 544 [2021-11-09 09:57:31,745 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification. DAG size of input: 628 DAG size of output: 554 [2021-11-09 09:57:39,869 WARN L207 SmtUtils]: Spent 7.30 s on a formula simplification. DAG size of input: 721 DAG size of output: 648 [2021-11-09 09:57:46,148 WARN L207 SmtUtils]: Spent 5.50 s on a formula simplification. DAG size of input: 583 DAG size of output: 511 [2021-11-09 09:57:57,789 WARN L207 SmtUtils]: Spent 5.78 s on a formula simplification. DAG size of input: 581 DAG size of output: 509 [2021-11-09 09:58:17,063 WARN L207 SmtUtils]: Spent 7.58 s on a formula simplification. DAG size of input: 741 DAG size of output: 668 [2021-11-09 09:58:53,167 WARN L207 SmtUtils]: Spent 9.53 s on a formula simplification. DAG size of input: 751 DAG size of output: 678 [2021-11-09 09:59:24,280 WARN L207 SmtUtils]: Spent 7.30 s on a formula simplification. DAG size of input: 751 DAG size of output: 678 [2021-11-09 09:59:32,950 WARN L207 SmtUtils]: Spent 7.80 s on a formula simplification. DAG size of input: 747 DAG size of output: 674 [2021-11-09 10:00:06,973 WARN L207 SmtUtils]: Spent 7.45 s on a formula simplification. DAG size of input: 749 DAG size of output: 676 [2021-11-09 10:00:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-09 10:00:12,896 INFO L93 Difference]: Finished difference Result 645 states and 684 transitions. [2021-11-09 10:00:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2021-11-09 10:00:12,897 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 70 states have (on average 6.257142857142857) internal successors, (438), 70 states have internal predecessors, (438), 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 438 [2021-11-09 10:00:12,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-09 10:00:12,905 INFO L225 Difference]: With dead ends: 645 [2021-11-09 10:00:12,906 INFO L226 Difference]: Without dead ends: 633 [2021-11-09 10:00:12,918 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2251 ImplicationChecksByTransitivity, 333.9s TimeCoverageRelationStatistics Valid=5440, Invalid=14300, Unknown=0, NotChecked=0, Total=19740 [2021-11-09 10:00:12,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2021-11-09 10:00:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 463. [2021-11-09 10:00:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.0367965367965368) internal successors, (479), 462 states have internal predecessors, (479), 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 10:00:12,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 479 transitions. [2021-11-09 10:00:12,936 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 479 transitions. Word has length 438 [2021-11-09 10:00:12,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-09 10:00:12,938 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 479 transitions. [2021-11-09 10:00:12,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 70 states have (on average 6.257142857142857) internal successors, (438), 70 states have internal predecessors, (438), 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 10:00:12,939 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 479 transitions. [2021-11-09 10:00:12,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2021-11-09 10:00:12,944 INFO L505 BasicCegarLoop]: Found error trace [2021-11-09 10:00:12,944 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-09 10:00:12,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-09 10:00:12,945 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-09 10:00:12,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-09 10:00:12,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1436427799, now seen corresponding path program 1 times [2021-11-09 10:00:12,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-09 10:00:12,947 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196321110] [2021-11-09 10:00:12,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-09 10:00:12,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-09 10:00:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-09 10:03:44,246 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 10:03:44,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-09 10:03:44,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196321110] [2021-11-09 10:03:44,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196321110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-09 10:03:44,247 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-09 10:03:44,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2021-11-09 10:03:44,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068449549] [2021-11-09 10:03:44,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-09 10:03:44,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-09 10:03:44,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-09 10:03:44,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=3831, Unknown=0, NotChecked=0, Total=4160 [2021-11-09 10:03:44,253 INFO L87 Difference]: Start difference. First operand 463 states and 479 transitions. Second operand has 65 states, 65 states have (on average 6.7384615384615385) internal successors, (438), 65 states have internal predecessors, (438), 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)