./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/vnew2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/vnew2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G --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 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 14:15:49,832 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 14:15:49,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 14:15:49,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 14:15:49,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 14:15:49,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 14:15:49,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 14:15:49,892 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 14:15:49,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 14:15:49,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 14:15:49,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 14:15:49,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 14:15:49,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 14:15:49,900 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 14:15:49,902 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 14:15:49,904 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 14:15:49,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 14:15:49,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 14:15:49,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 14:15:49,912 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 14:15:49,914 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 14:15:49,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 14:15:49,917 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 14:15:49,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 14:15:49,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 14:15:49,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 14:15:49,924 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 14:15:49,925 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 14:15:49,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 14:15:49,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 14:15:49,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 14:15:49,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 14:15:49,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 14:15:49,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 14:15:49,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 14:15:49,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 14:15:49,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 14:15:49,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 14:15:49,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 14:15:49,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 14:15:49,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 14:15:49,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 14:15:49,961 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 14:15:49,962 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 14:15:49,962 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 14:15:49,963 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 14:15:49,964 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 14:15:49,964 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 14:15:49,965 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 14:15:49,965 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 14:15:49,965 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 14:15:49,965 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 14:15:49,965 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 14:15:49,966 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 14:15:49,966 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 14:15:49,966 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 14:15:49,966 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 14:15:49,967 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 14:15:49,967 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 14:15:49,967 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 14:15:49,967 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 14:15:49,968 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 14:15:49,968 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 14:15:49,968 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 14:15:49,968 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:15:49,969 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 14:15:49,969 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 14:15:49,969 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 14:15:49,969 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 14:15:49,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 14:15:49,970 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 14:15:49,970 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 14:15:49,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 14:15:49,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 14:15:49,971 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_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6cb26fc448cefa547e2463448c16c0efba841bf620bbd2ba420ae15e288e3a3f [2021-11-23 14:15:50,232 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 14:15:50,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 14:15:50,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 14:15:50,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 14:15:50,268 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 14:15:50,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/loops-crafted-1/vnew2.c [2021-11-23 14:15:50,348 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/data/4c4c65898/ac324a3de9744a50a656e61fc41031df/FLAG783b2b571 [2021-11-23 14:15:50,809 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 14:15:50,809 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/sv-benchmarks/c/loops-crafted-1/vnew2.c [2021-11-23 14:15:50,821 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/data/4c4c65898/ac324a3de9744a50a656e61fc41031df/FLAG783b2b571 [2021-11-23 14:15:51,179 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/data/4c4c65898/ac324a3de9744a50a656e61fc41031df [2021-11-23 14:15:51,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 14:15:51,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 14:15:51,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 14:15:51,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 14:15:51,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 14:15:51,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,200 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fb1e351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51, skipping insertion in model container [2021-11-23 14:15:51,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,211 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 14:15:51,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 14:15:51,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/sv-benchmarks/c/loops-crafted-1/vnew2.c[403,416] [2021-11-23 14:15:51,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:15:51,408 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 14:15:51,420 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/sv-benchmarks/c/loops-crafted-1/vnew2.c[403,416] [2021-11-23 14:15:51,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 14:15:51,437 INFO L208 MainTranslator]: Completed translation [2021-11-23 14:15:51,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51 WrapperNode [2021-11-23 14:15:51,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 14:15:51,441 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 14:15:51,442 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 14:15:51,442 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 14:15:51,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,479 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 40 [2021-11-23 14:15:51,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 14:15:51,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 14:15:51,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 14:15:51,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 14:15:51,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,515 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 14:15:51,522 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 14:15:51,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 14:15:51,524 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 14:15:51,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (1/1) ... [2021-11-23 14:15:51,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 14:15:51,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:15:51,565 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 14:15:51,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 14:15:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 14:15:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 14:15:51,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 14:15:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 14:15:51,674 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 14:15:51,675 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 14:15:51,792 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 14:15:51,798 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 14:15:51,798 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 14:15:51,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:15:51 BoogieIcfgContainer [2021-11-23 14:15:51,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 14:15:51,813 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 14:15:51,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 14:15:51,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 14:15:51,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:15:51" (1/3) ... [2021-11-23 14:15:51,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103a4587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:15:51, skipping insertion in model container [2021-11-23 14:15:51,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:15:51" (2/3) ... [2021-11-23 14:15:51,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@103a4587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:15:51, skipping insertion in model container [2021-11-23 14:15:51,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:15:51" (3/3) ... [2021-11-23 14:15:51,832 INFO L111 eAbstractionObserver]: Analyzing ICFG vnew2.c [2021-11-23 14:15:51,838 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 14:15:51,838 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 14:15:51,884 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 14:15:51,891 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 [2021-11-23 14:15:51,892 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 14:15:51,905 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:15:51,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 14:15:51,911 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:15:51,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:15:51,912 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:15:51,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:15:51,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1807091466, now seen corresponding path program 1 times [2021-11-23 14:15:51,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:15:51,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547828060] [2021-11-23 14:15:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:15:51,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:15:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:15:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:15:52,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:15:52,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547828060] [2021-11-23 14:15:52,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547828060] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:15:52,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:15:52,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 14:15:52,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948705144] [2021-11-23 14:15:52,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:15:52,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 14:15:52,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:15:52,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 14:15:52,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:15:52,136 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:15:52,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:15:52,157 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2021-11-23 14:15:52,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 14:15:52,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2021-11-23 14:15:52,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:15:52,166 INFO L225 Difference]: With dead ends: 22 [2021-11-23 14:15:52,166 INFO L226 Difference]: Without dead ends: 8 [2021-11-23 14:15:52,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 14:15:52,173 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:15:52,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:15:52,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-23 14:15:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-23 14:15:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:15:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-23 14:15:52,212 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 7 [2021-11-23 14:15:52,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:15:52,213 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-23 14:15:52,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:15:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-23 14:15:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-23 14:15:52,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:15:52,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:15:52,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 14:15:52,215 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:15:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:15:52,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1806972302, now seen corresponding path program 1 times [2021-11-23 14:15:52,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:15:52,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292142239] [2021-11-23 14:15:52,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:15:52,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:15:52,234 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:15:52,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29953589] [2021-11-23 14:15:52,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:15:52,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:15:52,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:15:52,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:15:52,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 14:15:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:15:52,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-23 14:15:52,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:15:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:15:52,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 14:15:52,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:15:52,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292142239] [2021-11-23 14:15:52,369 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:15:52,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29953589] [2021-11-23 14:15:52,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29953589] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 14:15:52,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 14:15:52,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 14:15:52,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164000269] [2021-11-23 14:15:52,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 14:15:52,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 14:15:52,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:15:52,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 14:15:52,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 14:15:52,375 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:15:52,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:15:52,405 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-11-23 14:15:52,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 14:15:52,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2021-11-23 14:15:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:15:52,407 INFO L225 Difference]: With dead ends: 13 [2021-11-23 14:15:52,407 INFO L226 Difference]: Without dead ends: 9 [2021-11-23 14:15:52,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 14:15:52,410 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 1 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 14:15:52,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 12 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 14:15:52,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-23 14:15:52,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-23 14:15:52,414 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) [2021-11-23 14:15:52,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-11-23 14:15:52,415 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2021-11-23 14:15:52,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:15:52,415 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-11-23 14:15:52,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:15:52,416 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-11-23 14:15:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-23 14:15:52,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:15:52,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:15:52,455 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 14:15:52,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:15:52,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:15:52,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:15:52,644 INFO L85 PathProgramCache]: Analyzing trace with hash 183172310, now seen corresponding path program 1 times [2021-11-23 14:15:52,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:15:52,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308707521] [2021-11-23 14:15:52,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:15:52,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:15:52,663 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:15:52,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777770484] [2021-11-23 14:15:52,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:15:52,664 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:15:52,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:15:52,665 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:15:52,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 14:15:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 14:15:52,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-23 14:15:52,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:15:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:15:52,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:15:53,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:15:53,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:15:53,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308707521] [2021-11-23 14:15:53,611 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:15:53,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777770484] [2021-11-23 14:15:53,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777770484] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:15:53,612 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:15:53,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-11-23 14:15:53,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229706551] [2021-11-23 14:15:53,612 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:15:53,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-23 14:15:53,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:15:53,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-23 14:15:53,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-23 14:15:53,614 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2021-11-23 14:16:01,168 WARN L227 SmtUtils]: Spent 7.25s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:16:03,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:16:08,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:16:08,164 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2021-11-23 14:16:08,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 14:16:08,165 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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 [2021-11-23 14:16:08,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:16:08,166 INFO L225 Difference]: With dead ends: 20 [2021-11-23 14:16:08,166 INFO L226 Difference]: Without dead ends: 12 [2021-11-23 14:16:08,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2021-11-23 14:16:08,168 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 21 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:16:08,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 17 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 1 Unknown, 0 Unchecked, 3.4s Time] [2021-11-23 14:16:08,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-11-23 14:16:08,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-11-23 14:16:08,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.0909090909090908) internal successors, (12), 11 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:16:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-11-23 14:16:08,173 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 8 [2021-11-23 14:16:08,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:16:08,174 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-11-23 14:16:08,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 10 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) [2021-11-23 14:16:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-11-23 14:16:08,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 14:16:08,175 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:16:08,175 INFO L514 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:16:08,211 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 14:16:08,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:16:08,376 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:16:08,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:16:08,376 INFO L85 PathProgramCache]: Analyzing trace with hash -422590578, now seen corresponding path program 2 times [2021-11-23 14:16:08,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:16:08,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384032378] [2021-11-23 14:16:08,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:16:08,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:16:08,399 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:16:08,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [33435851] [2021-11-23 14:16:08,399 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-23 14:16:08,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:16:08,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:16:08,403 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:16:08,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 14:16:08,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-23 14:16:08,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:16:08,490 WARN L261 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 37 conjunts are in the unsatisfiable core [2021-11-23 14:16:08,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:16:08,761 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:16:08,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:16:10,742 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:16:10,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:16:10,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384032378] [2021-11-23 14:16:10,742 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:16:10,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [33435851] [2021-11-23 14:16:10,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [33435851] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:16:10,743 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:16:10,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-23 14:16:10,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128816008] [2021-11-23 14:16:10,744 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:16:10,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 14:16:10,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:16:10,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 14:16:10,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-23 14:16:10,746 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:16:12,930 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse4 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse3 (mod (+ c_~SIZE~0 2) 4294967296))) (let ((.cse0 (let ((.cse11 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296))) (and (= .cse11 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (= .cse4 .cse11) (not (= (mod (mod .cse4 .cse3) 4294967296) 0)))))) (and (or (<= (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) 0) .cse0) (let ((.cse2 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or (let ((.cse1 (mod (+ 9 |c_ULTIMATE.start_main_~j~0#1|) 4294967296))) (and (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse1) (= .cse2 .cse1) (not (= (mod (mod .cse2 .cse3) 4294967296) 0)))) (<= 0 (div (* .cse2 (- 1)) 4294967296)))) (or .cse0 (<= 0 (div (* .cse4 (- 1)) 4294967296))) (let ((.cse5 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 12) 4294967296))) (or (<= 0 (div (* .cse5 (- 1)) 4294967296)) (let ((.cse6 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296))) (and (= (mod (+ |c_ULTIMATE.start_main_~k~0#1| 12) 4294967296) .cse6) (= .cse5 .cse6) (not (= (mod (mod .cse5 .cse3) 4294967296) 0)))))) (let ((.cse7 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or (<= 0 (div (* .cse7 (- 1)) 4294967296)) (let ((.cse8 (mod (+ 3 |c_ULTIMATE.start_main_~j~0#1|) 4294967296))) (and (= (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse8) (= .cse7 .cse8) (not (= (mod (mod .cse7 .cse3) 4294967296) 0)))))) (let ((.cse9 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or (let ((.cse10 (mod (+ 6 |c_ULTIMATE.start_main_~j~0#1|) 4294967296))) (and (= .cse9 .cse10) (not (= (mod (mod .cse9 .cse3) 4294967296) 0)) (= (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse10))) (<= 0 (div (* .cse9 (- 1)) 4294967296)))) (= c_~SIZE~0 20000001)))) is different from false [2021-11-23 14:16:30,456 WARN L227 SmtUtils]: Spent 15.87s on a formula simplification. DAG size of input: 79 DAG size of output: 70 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:16:33,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:16:48,377 WARN L227 SmtUtils]: Spent 9.21s on a formula simplification. DAG size of input: 83 DAG size of output: 71 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:17:05,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:17:07,319 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:17:19,849 WARN L227 SmtUtils]: Spent 10.37s on a formula simplification. DAG size of input: 86 DAG size of output: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:17:22,679 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:17:28,940 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:17:43,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 14:17:43,980 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-23 14:17:43,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-23 14:17:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 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 11 [2021-11-23 14:17:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 14:17:43,983 INFO L225 Difference]: With dead ends: 31 [2021-11-23 14:17:43,984 INFO L226 Difference]: Without dead ends: 18 [2021-11-23 14:17:43,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 78.6s TimeCoverageRelationStatistics Valid=239, Invalid=570, Unknown=7, NotChecked=54, Total=870 [2021-11-23 14:17:43,986 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 23 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 25 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2021-11-23 14:17:43,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 25 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 115 Invalid, 2 Unknown, 2 Unchecked, 16.4s Time] [2021-11-23 14:17:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-23 14:17:43,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-11-23 14:17:43,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:43,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-11-23 14:17:43,992 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 11 [2021-11-23 14:17:43,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 14:17:43,993 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-11-23 14:17:43,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:43,993 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-11-23 14:17:43,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-23 14:17:43,994 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 14:17:43,994 INFO L514 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 14:17:44,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 14:17:44,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-11-23 14:17:44,203 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 14:17:44,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 14:17:44,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1035092622, now seen corresponding path program 3 times [2021-11-23 14:17:44,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 14:17:44,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824318460] [2021-11-23 14:17:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 14:17:44,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 14:17:44,244 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 14:17:44,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [665513755] [2021-11-23 14:17:44,258 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 14:17:44,258 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 14:17:44,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 14:17:44,265 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 14:17:44,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a3b3d39e-40d7-4f6a-b901-ed9b3be46dce/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 14:17:44,558 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-11-23 14:17:44,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-23 14:17:44,561 WARN L261 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 71 conjunts are in the unsatisfiable core [2021-11-23 14:17:44,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 14:17:44,942 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:44,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 14:17:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 14:17:51,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 14:17:51,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824318460] [2021-11-23 14:17:51,255 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 14:17:51,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665513755] [2021-11-23 14:17:51,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665513755] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 14:17:51,255 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-23 14:17:51,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2021-11-23 14:17:51,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895311451] [2021-11-23 14:17:51,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-23 14:17:51,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-23 14:17:51,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 14:17:51,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-23 14:17:51,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=508, Unknown=0, NotChecked=0, Total=702 [2021-11-23 14:17:51,258 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 27 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 26 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 14:17:53,486 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ 9 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse0 (mod (+ 21 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse7 (mod (+ 30 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse16 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 12) 4294967296)) (.cse5 (mod |c_ULTIMATE.start_main_~j~0#1| 4294967296)) (.cse6 (mod (+ 30 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse15 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 15) 4294967296)) (.cse13 (mod (+ 3 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse17 (mod (+ 21 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse11 (mod (+ 6 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse21 (mod (+ 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse14 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 15) 4294967296)) (.cse19 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse9 (mod (+ 9 |c_ULTIMATE.start_main_~i~0#1|) 4294967296)) (.cse10 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 27) 4294967296)) (.cse8 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 27) 4294967296)) (.cse1 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 24) 4294967296)) (.cse20 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 24) 4294967296)) (.cse12 (mod (+ 6 |c_ULTIMATE.start_main_~j~0#1|) 4294967296)) (.cse18 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 12) 4294967296)) (.cse2 (mod (+ c_~SIZE~0 2) 4294967296)) (.cse4 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 18) 4294967296)) (.cse22 (mod (+ |c_ULTIMATE.start_main_~j~0#1| 18) 4294967296))) (and (= .cse0 (mod (+ 21 |c_ULTIMATE.start_main_~k~0#1|) 4294967296)) (not (= (mod (mod .cse1 .cse2) 4294967296) 0)) (= (mod (+ 9 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse3) (not (= (mod (mod .cse4 .cse2) 4294967296) 0)) (= .cse5 (mod |c_ULTIMATE.start_main_~k~0#1| 4294967296)) (= .cse6 .cse7) (= (mod (+ |c_ULTIMATE.start_main_~k~0#1| 27) 4294967296) .cse8) (= .cse9 .cse3) (not (= (mod (mod .cse10 .cse2) 4294967296) 0)) (= .cse11 .cse12) (= (mod (+ 3 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse13) (= .cse14 .cse15) (= (mod (+ |c_ULTIMATE.start_main_~k~0#1| 12) 4294967296) .cse16) (= .cse17 .cse0) (not (= (mod (mod .cse7 .cse2) 4294967296) 0)) (= .cse18 .cse16) (= .cse19 .cse5) (= .cse20 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 24) 4294967296)) (= (mod (+ 30 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse6) (not (= (mod (mod .cse15 .cse2) 4294967296) 0)) (= .cse21 .cse13) (not (= (mod (mod .cse17 .cse2) 4294967296) 0)) (not (= (mod (mod .cse11 .cse2) 4294967296) 0)) (not (= (mod (mod .cse21 .cse2) 4294967296) 0)) (= c_~SIZE~0 20000001) (= .cse14 (mod (+ |c_ULTIMATE.start_main_~k~0#1| 15) 4294967296)) (not (= (mod (mod .cse19 .cse2) 4294967296) 0)) (not (= (mod (mod .cse9 .cse2) 4294967296) 0)) (= .cse10 .cse8) (= .cse1 .cse20) (= (mod (+ 6 |c_ULTIMATE.start_main_~k~0#1|) 4294967296) .cse12) (= (mod (+ |c_ULTIMATE.start_main_~k~0#1| 18) 4294967296) .cse22) (not (= (mod (mod .cse18 .cse2) 4294967296) 0)) (= .cse4 .cse22))) is different from false [2021-11-23 14:19:53,221 WARN L227 SmtUtils]: Spent 1.92m on a formula simplification. DAG size of input: 136 DAG size of output: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:19:56,049 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:19:58,064 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:21:19,562 WARN L227 SmtUtils]: Spent 1.26m on a formula simplification. DAG size of input: 123 DAG size of output: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:21:21,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:21:25,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:21:27,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:22:18,342 WARN L227 SmtUtils]: Spent 41.22s on a formula simplification. DAG size of input: 110 DAG size of output: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:22:19,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:22:20,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:22:23,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:24:08,507 WARN L227 SmtUtils]: Spent 1.71m on a formula simplification. DAG size of input: 139 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:24:10,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:24:11,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:24:13,565 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:25:14,724 WARN L227 SmtUtils]: Spent 46.15s on a formula simplification. DAG size of input: 97 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:25:17,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:25:21,098 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:25:23,117 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:27:03,901 WARN L227 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 126 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:27:05,965 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:27:07,413 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:27:09,204 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:27:48,320 WARN L227 SmtUtils]: Spent 17.31s on a formula simplification. DAG size of input: 84 DAG size of output: 56 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:27:51,835 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:27:54,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:27:56,307 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:28:49,793 WARN L227 SmtUtils]: Spent 43.92s on a formula simplification. DAG size of input: 113 DAG size of output: 73 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:28:51,219 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:28:52,985 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:28:54,881 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:29:26,216 WARN L227 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 71 DAG size of output: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:29:27,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:29:29,246 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:29:31,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:29:33,732 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:29:36,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:30:18,118 WARN L227 SmtUtils]: Spent 28.85s on a formula simplification. DAG size of input: 100 DAG size of output: 66 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 14:30:20,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:30:22,212 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:30:25,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2021-11-23 14:30:26,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []