./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa --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 0d27ce9425b362883f32c5ccf3973d31d4f8100e5e6b8fcc1a4527c07eb2b71c --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 17:52:54,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 17:52:54,398 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 17:52:54,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 17:52:54,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 17:52:54,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 17:52:54,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 17:52:54,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 17:52:54,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 17:52:54,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 17:52:54,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 17:52:54,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 17:52:54,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 17:52:54,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 17:52:54,432 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 17:52:54,434 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 17:52:54,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 17:52:54,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 17:52:54,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 17:52:54,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 17:52:54,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 17:52:54,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 17:52:54,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 17:52:54,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 17:52:54,446 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 17:52:54,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 17:52:54,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 17:52:54,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 17:52:54,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 17:52:54,449 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 17:52:54,449 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 17:52:54,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 17:52:54,450 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 17:52:54,451 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 17:52:54,452 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 17:52:54,452 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 17:52:54,453 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 17:52:54,453 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 17:52:54,453 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 17:52:54,454 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 17:52:54,455 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 17:52:54,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 17:52:54,473 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 17:52:54,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 17:52:54,473 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 17:52:54,473 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 17:52:54,474 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 17:52:54,474 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 17:52:54,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 17:52:54,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 17:52:54,475 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 17:52:54,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 17:52:54,475 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 17:52:54,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 17:52:54,475 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 17:52:54,476 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 17:52:54,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 17:52:54,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 17:52:54,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 17:52:54,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:52:54,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 17:52:54,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 17:52:54,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 17:52:54,477 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 17:52:54,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 17:52:54,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 17:52:54,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 17:52:54,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 17:52:54,478 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 17:52:54,478 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_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d27ce9425b362883f32c5ccf3973d31d4f8100e5e6b8fcc1a4527c07eb2b71c [2021-12-06 17:52:54,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 17:52:54,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 17:52:54,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 17:52:54,687 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 17:52:54,687 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 17:52:54,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/loops-crafted-1/Mono5_1.c [2021-12-06 17:52:54,730 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/data/bf8f9fef3/7e34cdb50d504c13b9f3069635541ae4/FLAG881e64c50 [2021-12-06 17:52:55,101 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 17:52:55,101 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/sv-benchmarks/c/loops-crafted-1/Mono5_1.c [2021-12-06 17:52:55,106 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/data/bf8f9fef3/7e34cdb50d504c13b9f3069635541ae4/FLAG881e64c50 [2021-12-06 17:52:55,117 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/data/bf8f9fef3/7e34cdb50d504c13b9f3069635541ae4 [2021-12-06 17:52:55,119 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 17:52:55,120 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 17:52:55,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 17:52:55,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 17:52:55,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 17:52:55,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,126 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f2b70ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55, skipping insertion in model container [2021-12-06 17:52:55,126 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 17:52:55,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 17:52:55,245 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_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324] [2021-12-06 17:52:55,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:52:55,260 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 17:52:55,270 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_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/sv-benchmarks/c/loops-crafted-1/Mono5_1.c[311,324] [2021-12-06 17:52:55,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 17:52:55,283 INFO L208 MainTranslator]: Completed translation [2021-12-06 17:52:55,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55 WrapperNode [2021-12-06 17:52:55,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 17:52:55,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 17:52:55,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 17:52:55,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 17:52:55,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,309 INFO L137 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2021-12-06 17:52:55,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 17:52:55,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 17:52:55,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 17:52:55,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 17:52:55,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,318 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 17:52:55,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 17:52:55,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 17:52:55,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 17:52:55,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (1/1) ... [2021-12-06 17:52:55,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 17:52:55,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:52:55,354 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 17:52:55,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 17:52:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 17:52:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 17:52:55,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 17:52:55,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 17:52:55,454 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 17:52:55,456 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 17:52:55,518 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 17:52:55,522 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 17:52:55,522 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 17:52:55,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:52:55 BoogieIcfgContainer [2021-12-06 17:52:55,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 17:52:55,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 17:52:55,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 17:52:55,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 17:52:55,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:52:55" (1/3) ... [2021-12-06 17:52:55,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49720dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:52:55, skipping insertion in model container [2021-12-06 17:52:55,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:52:55" (2/3) ... [2021-12-06 17:52:55,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49720dde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:52:55, skipping insertion in model container [2021-12-06 17:52:55,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:52:55" (3/3) ... [2021-12-06 17:52:55,529 INFO L111 eAbstractionObserver]: Analyzing ICFG Mono5_1.c [2021-12-06 17:52:55,532 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 17:52:55,533 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 17:52:55,567 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 17:52:55,572 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 [2021-12-06 17:52:55,572 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 17:52:55,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2021-12-06 17:52:55,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 17:52:55,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:55,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 17:52:55,587 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:55,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2021-12-06 17:52:55,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:55,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650448292] [2021-12-06 17:52:55,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:55,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:55,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:52:55,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:55,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650448292] [2021-12-06 17:52:55,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650448292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:52:55,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:52:55,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 17:52:55,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099863669] [2021-12-06 17:52:55,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:52:55,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 17:52:55,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:55,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 17:52:55,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 17:52:55,724 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:52:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:52:55,734 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-12-06 17:52:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 17:52:55,736 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-12-06 17:52:55,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:52:55,745 INFO L225 Difference]: With dead ends: 21 [2021-12-06 17:52:55,745 INFO L226 Difference]: Without dead ends: 9 [2021-12-06 17:52:55,748 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 [2021-12-06 17:52:55,752 INFO L933 BasicCegarLoop]: 14 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, 14 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 [2021-12-06 17:52:55,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:52:55,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-06 17:52:55,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-06 17:52:55,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2021-12-06 17:52:55,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2021-12-06 17:52:55,780 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2021-12-06 17:52:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:55,780 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2021-12-06 17:52:55,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-06 17:52:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2021-12-06 17:52:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-06 17:52:55,781 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:55,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-06 17:52:55,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 17:52:55,782 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:55,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:55,783 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2021-12-06 17:52:55,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:55,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225031234] [2021-12-06 17:52:55,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:55,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:55,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:52:55,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:55,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225031234] [2021-12-06 17:52:55,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225031234] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:52:55,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:52:55,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 17:52:55,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471803530] [2021-12-06 17:52:55,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:52:55,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 17:52:55,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:55,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 17:52:55,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 17:52:55,887 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-12-06 17:52:55,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:52:55,913 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-12-06 17:52:55,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 17:52:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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 [2021-12-06 17:52:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:52:55,914 INFO L225 Difference]: With dead ends: 16 [2021-12-06 17:52:55,914 INFO L226 Difference]: Without dead ends: 12 [2021-12-06 17:52:55,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 17:52:55,916 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:52:55,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:52:55,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-12-06 17:52:55,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-12-06 17:52:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) 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) [2021-12-06 17:52:55,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2021-12-06 17:52:55,921 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 6 [2021-12-06 17:52:55,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:55,922 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2021-12-06 17:52:55,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 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) [2021-12-06 17:52:55,922 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2021-12-06 17:52:55,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-06 17:52:55,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:55,923 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:52:55,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 17:52:55,923 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:55,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:55,924 INFO L85 PathProgramCache]: Analyzing trace with hash 584467323, now seen corresponding path program 1 times [2021-12-06 17:52:55,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:55,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138993050] [2021-12-06 17:52:55,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:55,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:55,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:56,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:52:56,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:56,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138993050] [2021-12-06 17:52:56,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138993050] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 17:52:56,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 17:52:56,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 17:52:56,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548454695] [2021-12-06 17:52:56,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 17:52:56,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 17:52:56,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:56,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 17:52:56,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:52:56,006 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-12-06 17:52:56,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:52:56,021 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2021-12-06 17:52:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 17:52:56,022 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) Word has length 9 [2021-12-06 17:52:56,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:52:56,022 INFO L225 Difference]: With dead ends: 22 [2021-12-06 17:52:56,022 INFO L226 Difference]: Without dead ends: 15 [2021-12-06 17:52:56,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 17:52:56,025 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:52:56,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 11 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:52:56,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-12-06 17:52:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-12-06 17:52:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 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) [2021-12-06 17:52:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-12-06 17:52:56,029 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 9 [2021-12-06 17:52:56,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:56,030 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-12-06 17:52:56,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2021-12-06 17:52:56,030 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-12-06 17:52:56,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-06 17:52:56,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:56,031 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 17:52:56,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 17:52:56,031 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:56,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:56,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2007312204, now seen corresponding path program 1 times [2021-12-06 17:52:56,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:56,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806362804] [2021-12-06 17:52:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:56,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 17:52:56,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:56,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806362804] [2021-12-06 17:52:56,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806362804] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:52:56,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849977323] [2021-12-06 17:52:56,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:56,108 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:56,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:52:56,110 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:52:56,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 17:52:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:56,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 17:52:56,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:52:56,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:52:56,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:52:56,269 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-06 17:52:56,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849977323] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:52:56,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:52:56,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 9 [2021-12-06 17:52:56,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689215829] [2021-12-06 17:52:56,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:52:56,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 17:52:56,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:56,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 17:52:56,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-06 17:52:56,271 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-12-06 17:52:56,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:52:56,365 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-12-06 17:52:56,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 17:52:56,365 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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 [2021-12-06 17:52:56,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:52:56,366 INFO L225 Difference]: With dead ends: 40 [2021-12-06 17:52:56,366 INFO L226 Difference]: Without dead ends: 27 [2021-12-06 17:52:56,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:52:56,368 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 17:52:56,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 40 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 17:52:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-06 17:52:56,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2021-12-06 17:52:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 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) [2021-12-06 17:52:56,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2021-12-06 17:52:56,375 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 12 [2021-12-06 17:52:56,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:56,375 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2021-12-06 17:52:56,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 states have internal predecessors, (29), 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) [2021-12-06 17:52:56,376 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2021-12-06 17:52:56,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-06 17:52:56,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:56,376 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1] [2021-12-06 17:52:56,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 17:52:56,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:56,578 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:56,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1502357326, now seen corresponding path program 2 times [2021-12-06 17:52:56,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:56,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769498542] [2021-12-06 17:52:56,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:56,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:56,750 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-06 17:52:56,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:56,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769498542] [2021-12-06 17:52:56,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769498542] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:52:56,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070281905] [2021-12-06 17:52:56,751 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 17:52:56,751 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:56,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:52:56,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:52:56,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 17:52:56,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 17:52:56,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:52:56,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-06 17:52:56,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:52:56,869 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:52:56,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:52:56,985 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 17:52:56,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070281905] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:52:56,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:52:56,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 8] total 16 [2021-12-06 17:52:56,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908237968] [2021-12-06 17:52:56,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:52:56,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-06 17:52:56,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:56,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-06 17:52:56,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-12-06 17:52:56,988 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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) [2021-12-06 17:52:57,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:52:57,441 INFO L93 Difference]: Finished difference Result 76 states and 98 transitions. [2021-12-06 17:52:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-06 17:52:57,441 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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 24 [2021-12-06 17:52:57,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:52:57,442 INFO L225 Difference]: With dead ends: 76 [2021-12-06 17:52:57,442 INFO L226 Difference]: Without dead ends: 48 [2021-12-06 17:52:57,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=215, Invalid=597, Unknown=0, NotChecked=0, Total=812 [2021-12-06 17:52:57,443 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 85 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:52:57,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 136 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:52:57,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-12-06 17:52:57,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-12-06 17:52:57,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 46 states have internal predecessors, (58), 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) [2021-12-06 17:52:57,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 58 transitions. [2021-12-06 17:52:57,449 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 58 transitions. Word has length 24 [2021-12-06 17:52:57,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:57,450 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 58 transitions. [2021-12-06 17:52:57,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 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) [2021-12-06 17:52:57,450 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 58 transitions. [2021-12-06 17:52:57,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-06 17:52:57,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:57,451 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 10, 3, 1, 1, 1, 1, 1, 1] [2021-12-06 17:52:57,470 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 17:52:57,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:57,653 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:57,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:57,655 INFO L85 PathProgramCache]: Analyzing trace with hash 314984633, now seen corresponding path program 3 times [2021-12-06 17:52:57,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:57,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315573602] [2021-12-06 17:52:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:57,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:57,775 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-06 17:52:57,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:57,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315573602] [2021-12-06 17:52:57,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315573602] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:52:57,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596541220] [2021-12-06 17:52:57,776 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 17:52:57,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:57,776 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:52:57,777 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:52:57,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 17:52:57,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2021-12-06 17:52:57,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:52:57,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 17:52:57,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:52:57,990 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-06 17:52:57,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:52:58,143 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 106 proven. 15 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-06 17:52:58,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596541220] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:52:58,143 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:52:58,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 12 [2021-12-06 17:52:58,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873356320] [2021-12-06 17:52:58,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:52:58,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 17:52:58,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:58,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 17:52:58,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-12-06 17:52:58,145 INFO L87 Difference]: Start difference. First operand 47 states and 58 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) [2021-12-06 17:52:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:52:58,325 INFO L93 Difference]: Finished difference Result 106 states and 132 transitions. [2021-12-06 17:52:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 17:52:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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 45 [2021-12-06 17:52:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:52:58,327 INFO L225 Difference]: With dead ends: 106 [2021-12-06 17:52:58,327 INFO L226 Difference]: Without dead ends: 72 [2021-12-06 17:52:58,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 85 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=123, Unknown=0, NotChecked=0, Total=210 [2021-12-06 17:52:58,328 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 25 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 17:52:58,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 23 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 17:52:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-12-06 17:52:58,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2021-12-06 17:52:58,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 61 states have internal predecessors, (73), 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) [2021-12-06 17:52:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 73 transitions. [2021-12-06 17:52:58,336 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 73 transitions. Word has length 45 [2021-12-06 17:52:58,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:52:58,336 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 73 transitions. [2021-12-06 17:52:58,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 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) [2021-12-06 17:52:58,336 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 73 transitions. [2021-12-06 17:52:58,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-06 17:52:58,337 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:52:58,338 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 10, 8, 1, 1, 1, 1, 1, 1] [2021-12-06 17:52:58,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 17:52:58,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:58,539 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:52:58,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:52:58,541 INFO L85 PathProgramCache]: Analyzing trace with hash -487009614, now seen corresponding path program 4 times [2021-12-06 17:52:58,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:52:58,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316014419] [2021-12-06 17:52:58,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:52:58,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:52:58,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:52:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 251 proven. 100 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-06 17:52:58,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:52:58,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316014419] [2021-12-06 17:52:58,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316014419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:52:58,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571542115] [2021-12-06 17:52:58,727 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-06 17:52:58,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:52:58,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:52:58,728 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:52:58,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 17:52:58,762 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-06 17:52:58,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:52:58,763 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-06 17:52:58,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:52:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 377 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 17:52:58,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:52:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 377 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-06 17:52:59,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571542115] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:52:59,288 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:52:59,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 14] total 34 [2021-12-06 17:52:59,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661858778] [2021-12-06 17:52:59,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:52:59,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-06 17:52:59,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:52:59,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-06 17:52:59,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=928, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 17:52:59,291 INFO L87 Difference]: Start difference. First operand 62 states and 73 transitions. Second operand has 34 states, 34 states have (on average 3.1176470588235294) internal successors, (106), 34 states have internal predecessors, (106), 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) [2021-12-06 17:53:15,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 17:53:15,175 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2021-12-06 17:53:15,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-12-06 17:53:15,175 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 3.1176470588235294) internal successors, (106), 34 states have internal predecessors, (106), 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 60 [2021-12-06 17:53:15,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 17:53:15,177 INFO L225 Difference]: With dead ends: 160 [2021-12-06 17:53:15,177 INFO L226 Difference]: Without dead ends: 102 [2021-12-06 17:53:15,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 98 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 624 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=920, Invalid=3240, Unknown=0, NotChecked=0, Total=4160 [2021-12-06 17:53:15,180 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 401 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 17:53:15,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 463 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 17:53:15,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2021-12-06 17:53:15,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2021-12-06 17:53:15,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.24) internal successors, (124), 100 states have internal predecessors, (124), 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) [2021-12-06 17:53:15,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2021-12-06 17:53:15,193 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 60 [2021-12-06 17:53:15,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 17:53:15,194 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2021-12-06 17:53:15,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 3.1176470588235294) internal successors, (106), 34 states have internal predecessors, (106), 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) [2021-12-06 17:53:15,194 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2021-12-06 17:53:15,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 17:53:15,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 17:53:15,196 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 22, 9, 1, 1, 1, 1, 1, 1] [2021-12-06 17:53:15,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 17:53:15,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:53:15,397 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 17:53:15,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 17:53:15,399 INFO L85 PathProgramCache]: Analyzing trace with hash 157606297, now seen corresponding path program 5 times [2021-12-06 17:53:15,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 17:53:15,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094288534] [2021-12-06 17:53:15,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 17:53:15,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 17:53:15,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 17:53:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 628 proven. 126 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2021-12-06 17:53:15,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 17:53:15,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094288534] [2021-12-06 17:53:15,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094288534] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 17:53:15,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472390823] [2021-12-06 17:53:15,591 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-06 17:53:15,592 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 17:53:15,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 17:53:15,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 17:53:15,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 17:53:21,103 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 32 check-sat command(s) [2021-12-06 17:53:21,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 17:53:21,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 49 conjunts are in the unsatisfiable core [2021-12-06 17:53:21,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 17:53:21,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-06 17:53:21,481 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 17:53:22,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1426 backedges. 0 proven. 1300 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-06 17:53:22,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472390823] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 17:53:22,358 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 17:53:22,358 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 26] total 59 [2021-12-06 17:53:22,358 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362399835] [2021-12-06 17:53:22,358 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 17:53:22,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2021-12-06 17:53:22,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 17:53:22,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2021-12-06 17:53:22,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=653, Invalid=2769, Unknown=0, NotChecked=0, Total=3422 [2021-12-06 17:53:22,361 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 59 states, 59 states have (on average 3.0677966101694913) internal successors, (181), 59 states have internal predecessors, (181), 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) [2021-12-06 17:54:16,852 WARN L227 SmtUtils]: Spent 30.00s on a formula simplification that was a NOOP. DAG size: 117 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:54:18,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:55:36,750 WARN L227 SmtUtils]: Spent 44.55s on a formula simplification that was a NOOP. DAG size: 120 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:55:38,778 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 17:56:30,809 WARN L227 SmtUtils]: Spent 31.00s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:56:32,938 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 17:56:34,951 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 17:56:36,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 17:56:38,321 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 17:56:40,587 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 17:57:23,415 WARN L227 SmtUtils]: Spent 20.58s on a formula simplification that was a NOOP. DAG size: 97 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:57:26,314 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (<= 1 |c_ULTIMATE.start___VERIFIER_assert_~cond#1|) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 17:57:28,841 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 17:57:53,513 WARN L227 SmtUtils]: Spent 12.11s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:58:23,288 WARN L227 SmtUtils]: Spent 13.95s on a formula simplification that was a NOOP. DAG size: 87 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:58:54,288 WARN L227 SmtUtils]: Spent 15.43s on a formula simplification that was a NOOP. DAG size: 90 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:59:17,156 WARN L227 SmtUtils]: Spent 9.97s on a formula simplification that was a NOOP. DAG size: 82 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:59:37,119 WARN L227 SmtUtils]: Spent 9.06s on a formula simplification that was a NOOP. DAG size: 85 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 17:59:58,914 WARN L227 SmtUtils]: Spent 9.93s on a formula simplification that was a NOOP. DAG size: 77 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:00:11,360 WARN L227 SmtUtils]: Spent 5.22s on a formula simplification that was a NOOP. DAG size: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:00:22,210 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification that was a NOOP. DAG size: 72 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:00:35,551 WARN L227 SmtUtils]: Spent 5.33s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:01:28,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:01:28,908 INFO L93 Difference]: Finished difference Result 299 states and 393 transitions. [2021-12-06 18:01:28,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2021-12-06 18:01:28,908 INFO L78 Accepts]: Start accepts. Automaton has has 59 states, 59 states have (on average 3.0677966101694913) internal successors, (181), 59 states have internal predecessors, (181), 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 99 [2021-12-06 18:01:28,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:01:28,911 INFO L225 Difference]: With dead ends: 299 [2021-12-06 18:01:28,911 INFO L226 Difference]: Without dead ends: 189 [2021-12-06 18:01:28,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 152 SyntacticMatches, 1 SemanticMatches, 113 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1566 ImplicationChecksByTransitivity, 479.6s TimeCoverageRelationStatistics Valid=2648, Invalid=8914, Unknown=22, NotChecked=1526, Total=13110 [2021-12-06 18:01:28,916 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 1249 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 2480 mSolverCounterSat, 54 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1940 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 2480 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 183 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-06 18:01:28,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 1940 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 2480 Invalid, 1 Unknown, 183 Unchecked, 7.9s Time] [2021-12-06 18:01:28,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-06 18:01:28,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 180. [2021-12-06 18:01:28,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 1.2793296089385475) internal successors, (229), 179 states have internal predecessors, (229), 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) [2021-12-06 18:01:28,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 229 transitions. [2021-12-06 18:01:28,935 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 229 transitions. Word has length 99 [2021-12-06 18:01:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:01:28,935 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 229 transitions. [2021-12-06 18:01:28,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 3.0677966101694913) internal successors, (181), 59 states have internal predecessors, (181), 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) [2021-12-06 18:01:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 229 transitions. [2021-12-06 18:01:28,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-06 18:01:28,937 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:01:28,938 INFO L514 BasicCegarLoop]: trace histogram [35, 35, 24, 11, 1, 1, 1, 1, 1, 1] [2021-12-06 18:01:28,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 18:01:29,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:01:29,139 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:01:29,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:01:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1759556839, now seen corresponding path program 6 times [2021-12-06 18:01:29,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:01:29,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37057973] [2021-12-06 18:01:29,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:01:29,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:01:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:01:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 789 proven. 155 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2021-12-06 18:01:29,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:01:29,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37057973] [2021-12-06 18:01:29,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37057973] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:01:29,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809065214] [2021-12-06 18:01:29,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-06 18:01:29,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:01:29,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:01:29,314 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:01:29,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 18:01:29,350 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-12-06 18:01:29,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 18:01:29,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 18:01:29,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:01:29,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1820 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2021-12-06 18:01:29,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 18:01:29,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809065214] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 18:01:29,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 18:01:29,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [13] total 16 [2021-12-06 18:01:29,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280574645] [2021-12-06 18:01:29,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 18:01:29,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 18:01:29,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:01:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 18:01:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-06 18:01:29,521 INFO L87 Difference]: Start difference. First operand 180 states and 229 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-12-06 18:01:29,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 18:01:29,559 INFO L93 Difference]: Finished difference Result 399 states and 492 transitions. [2021-12-06 18:01:29,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 18:01:29,560 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) Word has length 111 [2021-12-06 18:01:29,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 18:01:29,563 INFO L225 Difference]: With dead ends: 399 [2021-12-06 18:01:29,563 INFO L226 Difference]: Without dead ends: 395 [2021-12-06 18:01:29,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2021-12-06 18:01:29,565 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 18:01:29,565 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 13 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 18:01:29,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2021-12-06 18:01:29,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 175. [2021-12-06 18:01:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.2701149425287357) internal successors, (221), 174 states have internal predecessors, (221), 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) [2021-12-06 18:01:29,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 221 transitions. [2021-12-06 18:01:29,585 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 221 transitions. Word has length 111 [2021-12-06 18:01:29,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 18:01:29,586 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 221 transitions. [2021-12-06 18:01:29,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 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) [2021-12-06 18:01:29,586 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 221 transitions. [2021-12-06 18:01:29,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-06 18:01:29,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 18:01:29,588 INFO L514 BasicCegarLoop]: trace histogram [37, 37, 26, 11, 1, 1, 1, 1, 1, 1] [2021-12-06 18:01:29,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 18:01:29,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:01:29,789 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 18:01:29,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 18:01:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1957023869, now seen corresponding path program 7 times [2021-12-06 18:01:29,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 18:01:29,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713998492] [2021-12-06 18:01:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 18:01:29,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 18:01:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:01:29,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 853 proven. 155 refuted. 0 times theorem prover too weak. 1027 trivial. 0 not checked. [2021-12-06 18:01:29,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 18:01:29,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713998492] [2021-12-06 18:01:29,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713998492] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 18:01:29,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98547597] [2021-12-06 18:01:29,965 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-06 18:01:29,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 18:01:29,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 18:01:29,966 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 18:01:29,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08e6ff5b-79d7-4fd8-827a-5c8cf9ffeb8d/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 18:01:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 18:01:30,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-06 18:01:30,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 18:01:30,482 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 1877 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-06 18:01:30,483 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 18:01:31,569 INFO L134 CoverageAnalysis]: Checked inductivity of 2035 backedges. 0 proven. 1877 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2021-12-06 18:01:31,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98547597] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 18:01:31,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 18:01:31,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 30, 30] total 68 [2021-12-06 18:01:31,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647409470] [2021-12-06 18:01:31,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 18:01:31,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2021-12-06 18:01:31,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 18:01:31,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2021-12-06 18:01:31,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=872, Invalid=3684, Unknown=0, NotChecked=0, Total=4556 [2021-12-06 18:01:31,572 INFO L87 Difference]: Start difference. First operand 175 states and 221 transitions. Second operand has 68 states, 68 states have (on average 3.1029411764705883) internal successors, (211), 68 states have internal predecessors, (211), 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) [2021-12-06 18:01:34,463 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967271) 4294967296) 0)) (not (= (mod (+ 4294967272 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967273 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967270 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 18:01:36,475 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967271) 4294967296) 0)) (not (= (mod (+ 4294967272 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967273 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967270 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 18:01:38,570 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967271) 4294967296) 0)) (not (= (mod (+ 4294967272 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967273 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 18:03:01,126 WARN L227 SmtUtils]: Spent 45.87s on a formula simplification that was a NOOP. DAG size: 129 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:03:04,182 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ 4294967272 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967273 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 18:04:29,400 WARN L227 SmtUtils]: Spent 40.51s on a formula simplification that was a NOOP. DAG size: 124 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:05:51,024 WARN L227 SmtUtils]: Spent 46.52s on a formula simplification that was a NOOP. DAG size: 122 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:05:52,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-06 18:05:55,668 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967274 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false [2021-12-06 18:06:51,210 WARN L227 SmtUtils]: Spent 27.51s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:08:11,155 WARN L227 SmtUtils]: Spent 41.26s on a formula simplification that was a NOOP. DAG size: 125 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-12-06 18:08:13,762 WARN L838 $PredicateComparison]: unable to prove that (and (not (= (mod (+ 4294967283 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967280) 4294967296) 0)) (not (= (mod (+ 4294967276 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967284) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967289) 4294967296) 0)) (not (= (mod (+ 4294967282 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967285 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967288 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967278) 4294967296) 0)) (not (= (mod (+ 4294967294 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967275 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967281) 4294967296) 0)) (not (= (mod |c_ULTIMATE.start_main_~z~0#1| 4294967296) 0)) (not (= (mod (+ 4294967286 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967293) 4294967296) 0)) (not (= (mod (+ 4294967291 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ 4294967295 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967277) 4294967296) 0)) (not (= (mod (+ |c_ULTIMATE.start_main_~z~0#1| 4294967287) 4294967296) 0)) (not (= (mod (+ 4294967292 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0)) (not (= 0 (mod (+ 4294967279 |c_ULTIMATE.start_main_~z~0#1|) 4294967296))) (not (= (mod (+ 4294967290 |c_ULTIMATE.start_main_~z~0#1|) 4294967296) 0))) is different from false