./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/functions_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-acceleration/functions_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y --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 3c699f32b26271d9b8672d2685c3f1aa3d3ad54df32baf7d1d77d9a96ddd2517 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:50:28,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:50:28,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:50:28,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:50:28,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:50:28,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:50:28,969 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:50:28,973 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:50:28,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:50:28,981 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:50:28,983 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:50:28,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:50:28,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:50:28,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:50:28,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:50:28,994 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:50:28,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:50:28,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:50:28,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:50:29,007 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:50:29,009 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:50:29,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:50:29,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:50:29,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:50:29,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:50:29,024 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:50:29,025 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:50:29,027 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:50:29,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:50:29,029 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:50:29,029 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:50:29,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:50:29,032 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:50:29,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:50:29,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:50:29,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:50:29,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:50:29,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:50:29,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:50:29,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:50:29,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:50:29,039 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-13 17:50:29,075 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:50:29,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:50:29,076 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:50:29,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:50:29,084 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:50:29,084 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:50:29,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:50:29,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:50:29,085 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:50:29,085 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:50:29,086 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:50:29,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:50:29,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:50:29,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:50:29,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:50:29,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:50:29,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:50:29,088 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:50:29,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:50:29,088 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:50:29,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:50:29,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:50:29,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:50:29,089 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:50:29,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:50:29,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:50:29,090 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:50:29,090 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:50:29,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:50:29,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:50:29,091 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:50:29,091 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:50:29,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:50:29,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:50:29,092 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_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c699f32b26271d9b8672d2685c3f1aa3d3ad54df32baf7d1d77d9a96ddd2517 [2021-11-13 17:50:29,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:50:29,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:50:29,444 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:50:29,445 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:50:29,446 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:50:29,448 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/loop-acceleration/functions_1-2.c [2021-11-13 17:50:29,521 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/data/621b5c653/f260a49c8fdd4cc281955e70c3c8aeac/FLAGee6a50e78 [2021-11-13 17:50:29,928 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:50:29,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/sv-benchmarks/c/loop-acceleration/functions_1-2.c [2021-11-13 17:50:29,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/data/621b5c653/f260a49c8fdd4cc281955e70c3c8aeac/FLAGee6a50e78 [2021-11-13 17:50:30,335 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/data/621b5c653/f260a49c8fdd4cc281955e70c3c8aeac [2021-11-13 17:50:30,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:50:30,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:50:30,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:50:30,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:50:30,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:50:30,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,349 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e8e82ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30, skipping insertion in model container [2021-11-13 17:50:30,349 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:50:30,368 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:50:30,530 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_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/sv-benchmarks/c/loop-acceleration/functions_1-2.c[325,338] [2021-11-13 17:50:30,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:50:30,553 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:50:30,574 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_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/sv-benchmarks/c/loop-acceleration/functions_1-2.c[325,338] [2021-11-13 17:50:30,586 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:50:30,600 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:50:30,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30 WrapperNode [2021-11-13 17:50:30,601 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:50:30,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:50:30,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:50:30,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:50:30,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,635 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:50:30,636 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:50:30,636 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:50:30,637 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:50:30,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,647 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:50:30,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:50:30,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:50:30,658 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:50:30,659 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (1/1) ... [2021-11-13 17:50:30,667 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:50:30,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:30,689 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:50:30,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:50:30,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:50:30,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:50:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:50:30,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:50:30,901 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:50:30,901 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 17:50:30,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:50:30 BoogieIcfgContainer [2021-11-13 17:50:30,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:50:30,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:50:30,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:50:30,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:50:30,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:50:30" (1/3) ... [2021-11-13 17:50:30,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76807e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:50:30, skipping insertion in model container [2021-11-13 17:50:30,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:30" (2/3) ... [2021-11-13 17:50:30,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76807e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:50:30, skipping insertion in model container [2021-11-13 17:50:30,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:50:30" (3/3) ... [2021-11-13 17:50:30,922 INFO L111 eAbstractionObserver]: Analyzing ICFG functions_1-2.c [2021-11-13 17:50:30,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:50:30,928 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:50:31,003 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:50:31,019 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 [2021-11-13 17:50:31,019 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:50:31,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2021-11-13 17:50:31,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-13 17:50:31,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:31,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-13 17:50:31,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:31,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:31,061 INFO L85 PathProgramCache]: Analyzing trace with hash 889635821, now seen corresponding path program 1 times [2021-11-13 17:50:31,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:31,080 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151151976] [2021-11-13 17:50:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:31,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:31,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:31,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:31,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151151976] [2021-11-13 17:50:31,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151151976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:31,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:31,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:50:31,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592070113] [2021-11-13 17:50:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:31,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:50:31,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:31,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:50:31,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:50:31,404 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 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) [2021-11-13 17:50:31,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:31,430 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-11-13 17:50:31,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:50:31,445 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 [2021-11-13 17:50:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:31,452 INFO L225 Difference]: With dead ends: 22 [2021-11-13 17:50:31,453 INFO L226 Difference]: Without dead ends: 10 [2021-11-13 17:50:31,455 INFO L932 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 [2021-11-13 17:50:31,459 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.66ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.91ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:31,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.66ms Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 10.91ms Time] [2021-11-13 17:50:31,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-11-13 17:50:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2021-11-13 17:50:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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) [2021-11-13 17:50:31,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-13 17:50:31,505 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 6 [2021-11-13 17:50:31,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:31,505 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-13 17:50:31,506 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) [2021-11-13 17:50:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-13 17:50:31,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-13 17:50:31,510 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:31,510 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:50:31,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:50:31,511 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:31,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:31,512 INFO L85 PathProgramCache]: Analyzing trace with hash 294764431, now seen corresponding path program 1 times [2021-11-13 17:50:31,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:31,513 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336588063] [2021-11-13 17:50:31,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:31,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:31,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:31,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336588063] [2021-11-13 17:50:31,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336588063] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:50:31,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015135741] [2021-11-13 17:50:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:31,676 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:31,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:31,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:50:31,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:50:31,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:31,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 17:50:31,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:50:31,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:31,901 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:50:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:31,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015135741] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:50:31,982 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:50:31,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-13 17:50:31,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171856380] [2021-11-13 17:50:31,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:50:31,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:50:31,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:31,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:50:31,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:50:31,986 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-13 17:50:32,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:32,058 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-11-13 17:50:32,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:50:32,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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 8 [2021-11-13 17:50:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:32,060 INFO L225 Difference]: With dead ends: 17 [2021-11-13 17:50:32,060 INFO L226 Difference]: Without dead ends: 13 [2021-11-13 17:50:32,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:50:32,062 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.19ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.09ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:32,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 27 Invalid, 38 Unknown, 0 Unchecked, 1.19ms Time], IncrementalHoareTripleChecker [8 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 28.09ms Time] [2021-11-13 17:50:32,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-13 17:50:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-13 17:50:32,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:50:32,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-13 17:50:32,068 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 8 [2021-11-13 17:50:32,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:32,068 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-13 17:50:32,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-13 17:50:32,069 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-13 17:50:32,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-13 17:50:32,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:32,070 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1] [2021-11-13 17:50:32,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:50:32,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:32,293 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:32,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:32,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1489810771, now seen corresponding path program 2 times [2021-11-13 17:50:32,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:32,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948387603] [2021-11-13 17:50:32,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:32,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:32,504 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:32,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:32,505 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948387603] [2021-11-13 17:50:32,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948387603] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:50:32,510 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536513217] [2021-11-13 17:50:32,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-13 17:50:32,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:32,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:32,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:50:32,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:50:32,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-13 17:50:32,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:50:32,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 17:50:32,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:50:32,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:50:32,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:32,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536513217] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:50:32,893 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:50:32,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2021-11-13 17:50:32,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32172233] [2021-11-13 17:50:32,894 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:50:32,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-13 17:50:32,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:32,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-13 17:50:32,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:50:32,896 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-11-13 17:50:33,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:33,555 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-11-13 17:50:33,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 17:50:33,555 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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 12 [2021-11-13 17:50:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:33,556 INFO L225 Difference]: With dead ends: 25 [2021-11-13 17:50:33,556 INFO L226 Difference]: Without dead ends: 21 [2021-11-13 17:50:33,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=223, Invalid=589, Unknown=0, NotChecked=0, Total=812 [2021-11-13 17:50:33,559 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 4 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.66ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.14ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:33,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 36 Invalid, 107 Unknown, 0 Unchecked, 3.66ms Time], IncrementalHoareTripleChecker [36 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 137.14ms Time] [2021-11-13 17:50:33,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-13 17:50:33,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-13 17:50:33,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.05) internal successors, (21), 20 states have internal predecessors, (21), 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) [2021-11-13 17:50:33,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2021-11-13 17:50:33,565 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2021-11-13 17:50:33,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:33,565 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2021-11-13 17:50:33,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 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) [2021-11-13 17:50:33,566 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2021-11-13 17:50:33,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-13 17:50:33,567 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:33,567 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1] [2021-11-13 17:50:33,594 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:50:33,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:33,778 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:33,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:33,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1781144283, now seen corresponding path program 3 times [2021-11-13 17:50:33,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:33,779 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8670072] [2021-11-13 17:50:33,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:33,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:34,131 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:34,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:34,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8670072] [2021-11-13 17:50:34,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8670072] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:50:34,132 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234196572] [2021-11-13 17:50:34,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 17:50:34,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:34,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:34,134 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:50:34,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:50:34,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-11-13 17:50:34,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:50:34,254 WARN L261 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 65 conjunts are in the unsatisfiable core [2021-11-13 17:50:34,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:50:34,413 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:34,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:50:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234196572] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:50:35,299 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:50:35,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 19] total 35 [2021-11-13 17:50:35,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812637014] [2021-11-13 17:50:35,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:50:35,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-13 17:50:35,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-13 17:50:35,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2021-11-13 17:50:35,302 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 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) [2021-11-13 17:50:50,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:50,992 INFO L93 Difference]: Finished difference Result 55 states and 62 transitions. [2021-11-13 17:50:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-13 17:50:50,993 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-13 17:50:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:50,994 INFO L225 Difference]: With dead ends: 55 [2021-11-13 17:50:50,994 INFO L226 Difference]: Without dead ends: 37 [2021-11-13 17:50:50,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1058 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=1304, Invalid=4548, Unknown=0, NotChecked=0, Total=5852 [2021-11-13 17:50:50,998 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 112 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 801.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.20ms SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 857.75ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:50,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 79 Invalid, 504 Unknown, 0 Unchecked, 5.20ms Time], IncrementalHoareTripleChecker [150 Valid, 354 Invalid, 0 Unknown, 0 Unchecked, 857.75ms Time] [2021-11-13 17:50:51,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-11-13 17:50:51,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-11-13 17:50:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 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) [2021-11-13 17:50:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-11-13 17:50:51,010 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 20 [2021-11-13 17:50:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:51,010 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-11-13 17:50:51,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 35 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) [2021-11-13 17:50:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-11-13 17:50:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 17:50:51,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:51,012 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1] [2021-11-13 17:50:51,026 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:50:51,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:51,217 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:51,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash 685690347, now seen corresponding path program 4 times [2021-11-13 17:50:51,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:51,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417340928] [2021-11-13 17:50:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:51,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:51,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:52,072 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:52,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:52,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417340928] [2021-11-13 17:50:52,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417340928] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:50:52,073 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486092] [2021-11-13 17:50:52,073 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-13 17:50:52,073 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:50:52,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:52,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:50:52,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:50:52,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-13 17:50:52,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:50:52,150 WARN L261 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 123 conjunts are in the unsatisfiable core [2021-11-13 17:50:52,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:50:52,397 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:52,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:50:54,217 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:50:54,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486092] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:50:54,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:50:54,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2021-11-13 17:50:54,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503688488] [2021-11-13 17:50:54,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:50:54,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2021-11-13 17:50:54,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:54,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2021-11-13 17:50:54,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=640, Invalid=3520, Unknown=0, NotChecked=0, Total=4160 [2021-11-13 17:50:54,222 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:51:17,112 WARN L227 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 107 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:51:34,687 WARN L227 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 104 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:52:52,188 WARN L227 SmtUtils]: Spent 5.13s on a formula simplification. DAG size of input: 90 DAG size of output: 17 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:56:16,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:56:16,772 INFO L93 Difference]: Finished difference Result 73 states and 88 transitions. [2021-11-13 17:56:16,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-13 17:56:16,773 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2021-11-13 17:56:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:56:16,775 INFO L225 Difference]: With dead ends: 73 [2021-11-13 17:56:16,775 INFO L226 Difference]: Without dead ends: 69 [2021-11-13 17:56:16,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2111 ImplicationChecksByTransitivity, 322.6s TimeCoverageRelationStatistics Valid=3574, Invalid=11917, Unknown=9, NotChecked=0, Total=15500 [2021-11-13 17:56:16,785 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 3 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 551 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1892.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.10ms SdHoareTripleChecker+Time, 551 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2052.22ms IncrementalHoareTripleChecker+Time [2021-11-13 17:56:16,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 144 Invalid, 1627 Unknown, 0 Unchecked, 8.10ms Time], IncrementalHoareTripleChecker [551 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 2052.22ms Time] [2021-11-13 17:56:16,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2021-11-13 17:56:16,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2021-11-13 17:56:16,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 68 states have (on average 1.0147058823529411) internal successors, (69), 68 states have internal predecessors, (69), 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) [2021-11-13 17:56:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2021-11-13 17:56:16,802 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 36 [2021-11-13 17:56:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:56:16,803 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2021-11-13 17:56:16,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.0769230769230769) internal successors, (70), 65 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:56:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2021-11-13 17:56:16,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 17:56:16,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:56:16,806 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 1, 1, 1, 1, 1, 1] [2021-11-13 17:56:16,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:56:17,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:56:17,030 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:56:17,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:56:17,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1963971595, now seen corresponding path program 5 times [2021-11-13 17:56:17,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:56:17,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537018211] [2021-11-13 17:56:17,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:56:17,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:56:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:56:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:19,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:56:19,632 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537018211] [2021-11-13 17:56:19,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537018211] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:56:19,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513380250] [2021-11-13 17:56:19,633 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-13 17:56:19,633 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:56:19,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:56:19,659 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:56:19,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ba6cd61-d13c-42d7-8781-7550cbe6cfa0/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:56:39,642 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-11-13 17:56:39,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 17:56:39,656 WARN L261 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 251 conjunts are in the unsatisfiable core [2021-11-13 17:56:39,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:56:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:40,198 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:56:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 961 backedges. 0 proven. 961 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:56:46,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513380250] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:56:46,873 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:56:46,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2021-11-13 17:56:46,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878449613] [2021-11-13 17:56:46,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:56:46,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2021-11-13 17:56:46,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:56:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2021-11-13 17:56:46,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2304, Invalid=14208, Unknown=0, NotChecked=0, Total=16512 [2021-11-13 17:56:46,881 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand has 129 states, 129 states have (on average 1.0387596899224807) internal successors, (134), 129 states have internal predecessors, (134), 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) [2021-11-13 17:57:36,914 WARN L227 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 130 DAG size of output: 14 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:57:39,065 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_f_#res#1| 14) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_f_#res#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 30) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod |c_ULTIMATE.start_f_#res#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 54) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 42) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 6) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 48) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 60) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 20) 4294967296) 268435455) (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 52) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 46) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 58) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 56 |c_ULTIMATE.start_f_#res#1|) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 60) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) is different from false [2021-11-13 17:58:51,850 WARN L227 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 122 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 17:58:53,866 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_f_#res#1| 14) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_f_#res#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 30) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod |c_ULTIMATE.start_f_#res#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 54) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 42) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 58) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 6) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 48) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 20) 4294967296) 268435455) (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 52) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 46) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 58) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 56 |c_ULTIMATE.start_f_#res#1|) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) is different from false [2021-11-13 18:00:04,151 WARN L227 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 118 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:00:06,172 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_f_#res#1| 14) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_f_#res#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 30) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod |c_ULTIMATE.start_f_#res#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 54) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 42) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 6) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) (< (mod (+ 56 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 48) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 20) 4294967296) 268435455) (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 52) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 46) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 10) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 56 |c_ULTIMATE.start_f_#res#1|) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) is different from false [2021-11-13 18:01:09,433 WARN L227 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 114 DAG size of output: 10 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:03:23,957 WARN L227 SmtUtils]: Spent 21.16s on a formula simplification. DAG size of input: 198 DAG size of output: 16 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-13 18:03:26,174 WARN L838 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_f_#res#1| 14) 4294967296) 268435455) (< (mod (+ 30 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_f_#res#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 30) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 48) 4294967296) 268435455) (< (mod (+ 32 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod |c_ULTIMATE.start_f_#res#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ 42 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ 22 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ 44 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 42) 4294967296) 268435455) (< (mod (+ 2 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 8) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 6) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 54) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 48) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 20) 4294967296) 268435455) (< (mod (+ 52 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 52) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 46) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 50) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 46 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_f_#res#1| 10) 4294967296) 268435455) (< (mod (+ 16 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 14 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 6 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455)) is different from false