./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8 --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 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 17:32:36,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 17:32:36,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 17:32:36,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 17:32:36,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 17:32:36,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 17:32:36,253 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 17:32:36,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 17:32:36,254 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 17:32:36,255 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 17:32:36,256 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 17:32:36,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 17:32:36,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 17:32:36,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 17:32:36,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 17:32:36,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 17:32:36,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 17:32:36,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 17:32:36,261 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 17:32:36,262 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 17:32:36,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 17:32:36,264 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 17:32:36,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 17:32:36,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 17:32:36,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 17:32:36,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 17:32:36,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 17:32:36,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 17:32:36,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 17:32:36,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 17:32:36,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 17:32:36,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 17:32:36,271 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 17:32:36,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 17:32:36,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 17:32:36,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 17:32:36,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 17:32:36,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 17:32:36,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 17:32:36,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 17:32:36,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 17:32:36,275 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 17:32:36,289 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 17:32:36,290 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 17:32:36,290 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 17:32:36,290 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 17:32:36,291 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 17:32:36,291 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 17:32:36,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 17:32:36,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 17:32:36,291 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 17:32:36,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 17:32:36,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 17:32:36,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 17:32:36,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 17:32:36,292 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 17:32:36,292 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 17:32:36,292 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 17:32:36,293 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 17:32:36,293 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 17:32:36,293 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 17:32:36,293 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 17:32:36,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 17:32:36,293 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 17:32:36,294 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 17:32:36,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 17:32:36,294 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:32:36,294 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 17:32:36,294 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 17:32:36,294 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 17:32:36,294 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 17:32:36,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 17:32:36,295 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 17:32:36,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 17:32:36,295 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 17:32:36,295 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 17:32:36,295 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 17:32:36,295 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68bb6d7d6818d105c8d36601291f0fbd6a765091c35c37006c1280fceb3f620a [2022-12-13 17:32:36,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 17:32:36,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 17:32:36,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 17:32:36,495 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 17:32:36,496 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 17:32:36,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2022-12-13 17:32:39,154 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 17:32:39,292 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 17:32:39,293 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c [2022-12-13 17:32:39,297 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/data/77461114a/4d3cbc7d7d844ad69c607cf0754a6b8e/FLAG83fa2360b [2022-12-13 17:32:39,307 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/data/77461114a/4d3cbc7d7d844ad69c607cf0754a6b8e [2022-12-13 17:32:39,309 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 17:32:39,310 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 17:32:39,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 17:32:39,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 17:32:39,313 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 17:32:39,314 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,314 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a14d278 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39, skipping insertion in model container [2022-12-13 17:32:39,315 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 17:32:39,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 17:32:39,430 WARN L237 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_4b854163-81cf-448d-8617-7801f2ae5376/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610] [2022-12-13 17:32:39,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:32:39,448 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 17:32:39,456 WARN L237 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_4b854163-81cf-448d-8617-7801f2ae5376/sv-benchmarks/c/nla-digbench-scaling/bresenham-ll_unwindbound20.c[597,610] [2022-12-13 17:32:39,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 17:32:39,469 INFO L208 MainTranslator]: Completed translation [2022-12-13 17:32:39,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39 WrapperNode [2022-12-13 17:32:39,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 17:32:39,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 17:32:39,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 17:32:39,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 17:32:39,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,491 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2022-12-13 17:32:39,491 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 17:32:39,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 17:32:39,491 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 17:32:39,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 17:32:39,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,498 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,502 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,502 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 17:32:39,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 17:32:39,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 17:32:39,505 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 17:32:39,505 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (1/1) ... [2022-12-13 17:32:39,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 17:32:39,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:39,527 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 17:32:39,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 17:32:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 17:32:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 17:32:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 17:32:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 17:32:39,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-12-13 17:32:39,555 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-12-13 17:32:39,605 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 17:32:39,607 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 17:32:39,694 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 17:32:39,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 17:32:39,699 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-13 17:32:39,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:32:39 BoogieIcfgContainer [2022-12-13 17:32:39,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 17:32:39,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 17:32:39,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 17:32:39,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 17:32:39,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 05:32:39" (1/3) ... [2022-12-13 17:32:39,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad877de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:32:39, skipping insertion in model container [2022-12-13 17:32:39,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 05:32:39" (2/3) ... [2022-12-13 17:32:39,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ad877de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 05:32:39, skipping insertion in model container [2022-12-13 17:32:39,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:32:39" (3/3) ... [2022-12-13 17:32:39,706 INFO L112 eAbstractionObserver]: Analyzing ICFG bresenham-ll_unwindbound20.c [2022-12-13 17:32:39,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 17:32:39,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-13 17:32:39,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 17:32:39,759 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7fa44893, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 17:32:39,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-13 17:32:39,763 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:32:39,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-12-13 17:32:39,768 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:39,768 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:39,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:39,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:39,773 INFO L85 PathProgramCache]: Analyzing trace with hash 180444447, now seen corresponding path program 1 times [2022-12-13 17:32:39,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:39,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954168964] [2022-12-13 17:32:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:39,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:39,861 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:39,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1510260515] [2022-12-13 17:32:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:39,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:39,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:39,863 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:39,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 17:32:39,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:39,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-13 17:32:39,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:40,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 17:32:40,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:40,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954168964] [2022-12-13 17:32:40,046 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:32:40,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510260515] [2022-12-13 17:32:40,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510260515] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 17:32:40,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 17:32:40,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 17:32:40,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534129464] [2022-12-13 17:32:40,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 17:32:40,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 17:32:40,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:40,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 17:32:40,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 17:32:40,086 INFO L87 Difference]: Start difference. First operand has 20 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:32:40,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:40,205 INFO L93 Difference]: Finished difference Result 54 states and 73 transitions. [2022-12-13 17:32:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 17:32:40,207 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-12-13 17:32:40,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:40,212 INFO L225 Difference]: With dead ends: 54 [2022-12-13 17:32:40,212 INFO L226 Difference]: Without dead ends: 25 [2022-12-13 17:32:40,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:32:40,217 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:32:40,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:32:40,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-12-13 17:32:40,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2022-12-13 17:32:40,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:32:40,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-12-13 17:32:40,245 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 8 [2022-12-13 17:32:40,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:40,245 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-12-13 17:32:40,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-13 17:32:40,246 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-12-13 17:32:40,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-12-13 17:32:40,246 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:40,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:40,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 17:32:40,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:40,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:40,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:40,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2080570626, now seen corresponding path program 1 times [2022-12-13 17:32:40,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:40,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915614693] [2022-12-13 17:32:40,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:40,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:40,488 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:40,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1877857072] [2022-12-13 17:32:40,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:40,494 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:40,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 17:32:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:40,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 17:32:40,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:40,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:40,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:32:41,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:41,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:41,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915614693] [2022-12-13 17:32:41,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:32:41,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1877857072] [2022-12-13 17:32:41,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1877857072] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:32:41,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:32:41,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 16 [2022-12-13 17:32:41,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759521780] [2022-12-13 17:32:41,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:32:41,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 17:32:41,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:41,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 17:32:41,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-12-13 17:32:41,116 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:32:41,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:41,414 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-12-13 17:32:41,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 17:32:41,415 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-12-13 17:32:41,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:41,416 INFO L225 Difference]: With dead ends: 41 [2022-12-13 17:32:41,416 INFO L226 Difference]: Without dead ends: 34 [2022-12-13 17:32:41,416 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-12-13 17:32:41,417 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:32:41,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 64 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:32:41,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-12-13 17:32:41,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-12-13 17:32:41,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 25 states have (on average 1.16) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:32:41,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-12-13 17:32:41,426 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 18 [2022-12-13 17:32:41,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:41,426 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-12-13 17:32:41,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.9285714285714286) internal successors, (27), 15 states have internal predecessors, (27), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:32:41,427 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-12-13 17:32:41,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-12-13 17:32:41,428 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:41,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:41,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 17:32:41,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:41,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:41,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:41,630 INFO L85 PathProgramCache]: Analyzing trace with hash 680664555, now seen corresponding path program 1 times [2022-12-13 17:32:41,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:41,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829042912] [2022-12-13 17:32:41,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:41,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:41,642 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:41,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848218982] [2022-12-13 17:32:41,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:41,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:41,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:41,645 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:41,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 17:32:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:41,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 17:32:41,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:41,726 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:41,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:32:41,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:41,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:41,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829042912] [2022-12-13 17:32:41,754 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:32:41,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848218982] [2022-12-13 17:32:41,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848218982] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:32:41,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:32:41,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2022-12-13 17:32:41,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341755495] [2022-12-13 17:32:41,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:32:41,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 17:32:41,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:41,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 17:32:41,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-12-13 17:32:41,756 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:32:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:41,812 INFO L93 Difference]: Finished difference Result 73 states and 81 transitions. [2022-12-13 17:32:41,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:32:41,812 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2022-12-13 17:32:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:41,813 INFO L225 Difference]: With dead ends: 73 [2022-12-13 17:32:41,813 INFO L226 Difference]: Without dead ends: 67 [2022-12-13 17:32:41,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 17:32:41,814 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:32:41,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 106 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:32:41,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-12-13 17:32:41,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2022-12-13 17:32:41,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 44 states have (on average 1.1818181818181819) internal successors, (52), 44 states have internal predecessors, (52), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-12-13 17:32:41,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 63 transitions. [2022-12-13 17:32:41,825 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 63 transitions. Word has length 19 [2022-12-13 17:32:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:41,826 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 63 transitions. [2022-12-13 17:32:41,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 17:32:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 63 transitions. [2022-12-13 17:32:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-13 17:32:41,827 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:41,827 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:41,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 17:32:42,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:42,028 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:42,028 INFO L85 PathProgramCache]: Analyzing trace with hash 713886481, now seen corresponding path program 1 times [2022-12-13 17:32:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761001033] [2022-12-13 17:32:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:42,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:42,035 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1825736231] [2022-12-13 17:32:42,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:42,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:42,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:42,036 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:42,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 17:32:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:42,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2022-12-13 17:32:42,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:42,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:32:42,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:32:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-13 17:32:42,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:42,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761001033] [2022-12-13 17:32:42,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:32:42,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825736231] [2022-12-13 17:32:42,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825736231] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:32:42,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:32:42,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 23 [2022-12-13 17:32:42,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654711638] [2022-12-13 17:32:42,647 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:32:42,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-13 17:32:42,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-13 17:32:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:32:42,649 INFO L87 Difference]: Start difference. First operand 55 states and 63 transitions. Second operand has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:32:43,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:43,305 INFO L93 Difference]: Finished difference Result 65 states and 73 transitions. [2022-12-13 17:32:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-13 17:32:43,305 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 25 [2022-12-13 17:32:43,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:43,306 INFO L225 Difference]: With dead ends: 65 [2022-12-13 17:32:43,306 INFO L226 Difference]: Without dead ends: 57 [2022-12-13 17:32:43,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=261, Invalid=1299, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 17:32:43,308 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 57 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 17:32:43,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 78 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 17:32:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-12-13 17:32:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2022-12-13 17:32:43,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 40 states have (on average 1.125) internal successors, (45), 40 states have internal predecessors, (45), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:32:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-12-13 17:32:43,319 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 25 [2022-12-13 17:32:43,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:43,319 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-12-13 17:32:43,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 20 states have internal predecessors, (34), 6 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 17:32:43,319 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-12-13 17:32:43,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-12-13 17:32:43,320 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:43,320 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:43,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-13 17:32:43,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:43,520 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:43,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:43,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1582515168, now seen corresponding path program 1 times [2022-12-13 17:32:43,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:43,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074609919] [2022-12-13 17:32:43,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:43,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:43,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:43,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395444615] [2022-12-13 17:32:43,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:43,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:43,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:43,531 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:43,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 17:32:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 17:32:43,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 17:32:43,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:43,637 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:43,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:32:43,706 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 8 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 17:32:43,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074609919] [2022-12-13 17:32:43,707 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:32:43,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395444615] [2022-12-13 17:32:43,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395444615] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:32:43,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:32:43,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2022-12-13 17:32:43,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807957534] [2022-12-13 17:32:43,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:32:43,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-13 17:32:43,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:43,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-13 17:32:43,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2022-12-13 17:32:43,714 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 17:32:43,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:43,843 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2022-12-13 17:32:43,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-12-13 17:32:43,843 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Word has length 49 [2022-12-13 17:32:43,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:43,844 INFO L225 Difference]: With dead ends: 116 [2022-12-13 17:32:43,844 INFO L226 Difference]: Without dead ends: 110 [2022-12-13 17:32:43,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-12-13 17:32:43,846 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 45 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 17:32:43,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 166 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 17:32:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-12-13 17:32:43,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-12-13 17:32:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 88 states have (on average 1.125) internal successors, (99), 88 states have internal predecessors, (99), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-12-13 17:32:43,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2022-12-13 17:32:43,870 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 49 [2022-12-13 17:32:43,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:43,870 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2022-12-13 17:32:43,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 9 states have call successors, (9), 6 states have call predecessors, (9), 5 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-12-13 17:32:43,870 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2022-12-13 17:32:43,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-12-13 17:32:43,873 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:43,873 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:43,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 17:32:44,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:44,075 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:44,076 INFO L85 PathProgramCache]: Analyzing trace with hash 297311502, now seen corresponding path program 2 times [2022-12-13 17:32:44,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:44,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801315238] [2022-12-13 17:32:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:44,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:44,123 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:44,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137921462] [2022-12-13 17:32:44,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 17:32:44,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:44,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:44,126 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:44,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 17:32:44,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 17:32:44,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:32:44,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 23 conjunts are in the unsatisfiable core [2022-12-13 17:32:44,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:44,319 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 470 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 17:32:44,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:32:44,492 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 20 proven. 290 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-12-13 17:32:44,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801315238] [2022-12-13 17:32:44,493 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:32:44,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137921462] [2022-12-13 17:32:44,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137921462] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:32:44,493 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:32:44,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2022-12-13 17:32:44,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476572309] [2022-12-13 17:32:44,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:32:44,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 17:32:44,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:44,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 17:32:44,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2022-12-13 17:32:44,497 INFO L87 Difference]: Start difference. First operand 110 states and 120 transitions. Second operand has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-13 17:32:44,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:44,759 INFO L93 Difference]: Finished difference Result 216 states and 245 transitions. [2022-12-13 17:32:44,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-12-13 17:32:44,760 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) Word has length 109 [2022-12-13 17:32:44,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:44,763 INFO L225 Difference]: With dead ends: 216 [2022-12-13 17:32:44,763 INFO L226 Difference]: Without dead ends: 210 [2022-12-13 17:32:44,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2022-12-13 17:32:44,764 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 100 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:32:44,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 266 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:32:44,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-12-13 17:32:44,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2022-12-13 17:32:44,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 168 states have (on average 1.125) internal successors, (189), 168 states have internal predecessors, (189), 21 states have call successors, (21), 21 states have call predecessors, (21), 20 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-12-13 17:32:44,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 230 transitions. [2022-12-13 17:32:44,793 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 230 transitions. Word has length 109 [2022-12-13 17:32:44,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:44,793 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 230 transitions. [2022-12-13 17:32:44,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.833333333333333) internal successors, (140), 24 states have internal predecessors, (140), 20 states have call successors, (21), 12 states have call predecessors, (21), 11 states have return successors, (20), 19 states have call predecessors, (20), 19 states have call successors, (20) [2022-12-13 17:32:44,794 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 230 transitions. [2022-12-13 17:32:44,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-12-13 17:32:44,796 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:44,796 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:44,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-13 17:32:44,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:44,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:44,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:44,998 INFO L85 PathProgramCache]: Analyzing trace with hash -661676624, now seen corresponding path program 3 times [2022-12-13 17:32:44,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:44,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918713072] [2022-12-13 17:32:44,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:44,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:45,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:45,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832521364] [2022-12-13 17:32:45,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 17:32:45,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:45,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:45,030 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:45,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-13 17:32:45,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-13 17:32:45,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 17:32:45,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 17:32:45,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 17:32:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 212 proven. 1 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-12-13 17:32:45,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 17:32:45,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 96 proven. 117 refuted. 0 times theorem prover too weak. 1767 trivial. 0 not checked. [2022-12-13 17:32:45,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 17:32:45,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918713072] [2022-12-13 17:32:45,624 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-12-13 17:32:45,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832521364] [2022-12-13 17:32:45,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832521364] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 17:32:45,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 17:32:45,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2022-12-13 17:32:45,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006996052] [2022-12-13 17:32:45,625 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 17:32:45,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 17:32:45,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 17:32:45,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 17:32:45,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-12-13 17:32:45,626 INFO L87 Difference]: Start difference. First operand 210 states and 230 transitions. Second operand has 18 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:32:45,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 17:32:45,841 INFO L93 Difference]: Finished difference Result 409 states and 448 transitions. [2022-12-13 17:32:45,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 17:32:45,841 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 209 [2022-12-13 17:32:45,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 17:32:45,846 INFO L225 Difference]: With dead ends: 409 [2022-12-13 17:32:45,846 INFO L226 Difference]: Without dead ends: 403 [2022-12-13 17:32:45,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 399 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2022-12-13 17:32:45,847 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 25 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 17:32:45,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 62 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 17:32:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-12-13 17:32:45,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 400. [2022-12-13 17:32:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 320 states have (on average 1.125) internal successors, (360), 320 states have internal predecessors, (360), 40 states have call successors, (40), 40 states have call predecessors, (40), 39 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-13 17:32:45,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 439 transitions. [2022-12-13 17:32:45,894 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 439 transitions. Word has length 209 [2022-12-13 17:32:45,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 17:32:45,895 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 439 transitions. [2022-12-13 17:32:45,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 17 states have internal predecessors, (34), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-12-13 17:32:45,895 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 439 transitions. [2022-12-13 17:32:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-12-13 17:32:45,898 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 17:32:45,898 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 17:32:45,903 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-13 17:32:46,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:46,099 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 17:32:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 17:32:46,099 INFO L85 PathProgramCache]: Analyzing trace with hash 18381746, now seen corresponding path program 1 times [2022-12-13 17:32:46,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 17:32:46,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131674962] [2022-12-13 17:32:46,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:46,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 17:32:46,113 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-12-13 17:32:46,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2073563329] [2022-12-13 17:32:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 17:32:46,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 17:32:46,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 17:32:46,115 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 17:32:46,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-13 17:32:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:32:46,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-13 17:32:46,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-13 17:32:46,367 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-13 17:32:46,367 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-13 17:32:46,368 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-13 17:32:46,374 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-13 17:32:46,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-13 17:32:46,579 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1] [2022-12-13 17:32:46,589 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-13 17:32:46,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.12 05:32:46 BoogieIcfgContainer [2022-12-13 17:32:46,672 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-13 17:32:46,673 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-13 17:32:46,673 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-13 17:32:46,673 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-13 17:32:46,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 05:32:39" (3/4) ... [2022-12-13 17:32:46,675 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-12-13 17:32:46,752 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/witness.graphml [2022-12-13 17:32:46,752 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-13 17:32:46,753 INFO L158 Benchmark]: Toolchain (without parser) took 7443.21ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 81.5MB in the beginning and 41.6MB in the end (delta: 39.9MB). Peak memory consumption was 65.7MB. Max. memory is 16.1GB. [2022-12-13 17:32:46,753 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 17:32:46,753 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.66ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 70.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:32:46,753 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.53ms. Allocated memory is still 115.3MB. Free memory was 70.6MB in the beginning and 69.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:32:46,754 INFO L158 Benchmark]: Boogie Preprocessor took 12.49ms. Allocated memory is still 115.3MB. Free memory was 69.2MB in the beginning and 67.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-13 17:32:46,754 INFO L158 Benchmark]: RCFGBuilder took 195.88ms. Allocated memory is still 115.3MB. Free memory was 67.9MB in the beginning and 57.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-12-13 17:32:46,754 INFO L158 Benchmark]: TraceAbstraction took 6970.73ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 56.7MB in the beginning and 51.1MB in the end (delta: 5.6MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2022-12-13 17:32:46,754 INFO L158 Benchmark]: Witness Printer took 79.40ms. Allocated memory is still 138.4MB. Free memory was 51.1MB in the beginning and 41.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-13 17:32:46,756 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 115.3MB. Free memory is still 89.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 159.66ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 70.6MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.53ms. Allocated memory is still 115.3MB. Free memory was 70.6MB in the beginning and 69.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.49ms. Allocated memory is still 115.3MB. Free memory was 69.2MB in the beginning and 67.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 195.88ms. Allocated memory is still 115.3MB. Free memory was 67.9MB in the beginning and 57.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 6970.73ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 56.7MB in the beginning and 51.1MB in the end (delta: 5.6MB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. * Witness Printer took 79.40ms. Allocated memory is still 138.4MB. Free memory was 51.1MB in the beginning and 41.6MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 16]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L21] int counter = 0; VAL [counter=0] [L23] int X, Y; [L24] long long x, y, v, xy, yx; [L25] X = __VERIFIER_nondet_int() [L26] Y = __VERIFIER_nondet_int() [L27] v = ((long long) 2 * Y) - X [L28] y = 0 [L29] x = 0 VAL [counter=0, v=-38, x=0, X=40, y=0, Y=1] [L31] EXPR counter++ VAL [counter=1, counter++=0, v=-38, X=40, x=0, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=1, v=-38, x=0, X=40, x=0, x=0, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=1] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=1, v=-38, X=40, x=0, x=0, x=0, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=1, v=-38, X=40, x=0, x=0, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=1, v=-36, X=40, x=0, x=0, x=0, Y=1, y=0] [L45] x++ VAL [counter=1, v=-36, x=0, x=0, X=40, x=1, Y=1, y=0] [L31] EXPR counter++ VAL [counter=2, counter++=1, v=-36, X=40, x=1, x=0, x=0, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=2, v=-36, x=1, x=1, x=0, X=40, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=2] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=2, v=-36, x=0, x=1, X=40, x=1, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=2, v=-36, x=1, x=1, X=40, x=0, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=2, v=-34, X=40, x=0, x=1, x=1, y=0, Y=1] [L45] x++ VAL [counter=2, v=-34, x=0, x=2, x=1, X=40, Y=1, y=0] [L31] EXPR counter++ VAL [counter=3, counter++=2, v=-34, x=2, x=0, X=40, x=1, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=3, v=-34, x=0, X=40, x=2, x=2, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=3] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=3, v=-34, x=0, X=40, x=2, x=2, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=3, v=-34, x=2, X=40, x=2, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=3, v=-32, x=2, x=0, x=2, X=40, y=0, Y=1] [L45] x++ VAL [counter=3, v=-32, X=40, x=0, x=3, x=2, Y=1, y=0] [L31] EXPR counter++ VAL [counter=4, counter++=3, v=-32, x=3, x=0, X=40, x=2, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=4, v=-32, x=3, x=3, X=40, x=0, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=4] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=4, v=-32, x=0, X=40, x=3, x=3, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=4, v=-32, x=0, x=3, x=3, X=40, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=4, v=-30, x=3, X=40, x=0, x=3, Y=1, y=0] [L45] x++ VAL [counter=4, v=-30, x=4, x=0, x=3, X=40, Y=1, y=0] [L31] EXPR counter++ VAL [counter=5, counter++=4, v=-30, x=4, X=40, x=0, x=3, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=5, v=-30, X=40, x=4, x=4, x=0, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=5] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=5, v=-30, x=4, X=40, x=0, x=4, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=5, v=-30, x=4, x=4, X=40, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=5, v=-28, x=4, X=40, x=0, x=4, y=0, Y=1] [L45] x++ VAL [counter=5, v=-28, x=4, X=40, x=5, x=0, y=0, Y=1] [L31] EXPR counter++ VAL [counter=6, counter++=5, v=-28, x=0, X=40, x=5, x=4, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=6, v=-28, x=5, x=5, X=40, x=0, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=6] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=6, v=-28, X=40, x=5, x=5, x=0, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=6, v=-28, x=5, X=40, x=0, x=5, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=6, v=-26, x=0, x=5, x=5, X=40, y=0, Y=1] [L45] x++ VAL [counter=6, v=-26, x=0, x=5, x=6, X=40, y=0, Y=1] [L31] EXPR counter++ VAL [counter=7, counter++=6, v=-26, X=40, x=6, x=0, x=5, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=7, v=-26, x=6, X=40, x=6, x=0, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=7] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=7, v=-26, x=0, X=40, x=6, x=6, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=7, v=-26, x=6, X=40, x=6, x=0, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=7, v=-24, X=40, x=6, x=6, x=0, y=0, Y=1] [L45] x++ VAL [counter=7, v=-24, X=40, x=6, x=0, x=7, Y=1, y=0] [L31] EXPR counter++ VAL [counter=8, counter++=7, v=-24, X=40, x=7, x=0, x=6, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=8, v=-24, X=40, x=7, x=7, x=0, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=8] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=8, v=-24, x=0, x=7, x=7, X=40, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=8, v=-24, X=40, x=0, x=7, x=7, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=8, v=-22, X=40, x=0, x=7, x=7, Y=1, y=0] [L45] x++ VAL [counter=8, v=-22, x=8, x=7, x=0, X=40, Y=1, y=0] [L31] EXPR counter++ VAL [counter=9, counter++=8, v=-22, X=40, x=8, x=7, x=0, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=9, v=-22, x=0, x=8, x=8, X=40, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=9] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=9, v=-22, x=8, x=0, x=8, X=40, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=9, v=-22, x=8, X=40, x=8, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=9, v=-20, x=8, X=40, x=0, x=8, Y=1, y=0] [L45] x++ VAL [counter=9, v=-20, x=0, x=9, X=40, x=8, Y=1, y=0] [L31] EXPR counter++ VAL [counter=10, counter++=9, v=-20, x=0, x=8, x=9, X=40, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=10, v=-20, x=9, x=0, X=40, x=9, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=10] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=10, v=-20, x=0, X=40, x=9, x=9, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=10, v=-20, X=40, x=9, x=0, x=9, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=10, v=-18, X=40, x=9, x=0, x=9, y=0, Y=1] [L45] x++ VAL [counter=10, v=-18, x=0, X=40, x=9, x=10, y=0, Y=1] [L31] EXPR counter++ VAL [counter=11, counter++=10, v=-18, x=0, x=10, x=9, X=40, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=11, v=-18, X=40, x=10, x=0, x=10, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=11] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=11, v=-18, x=0, x=10, x=10, X=40, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=11, v=-18, x=10, X=40, x=10, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=11, v=-16, x=10, x=0, x=10, X=40, Y=1, y=0] [L45] x++ VAL [counter=11, v=-16, x=10, X=40, x=11, x=0, Y=1, y=0] [L31] EXPR counter++ VAL [counter=12, counter++=11, v=-16, x=11, x=10, x=0, X=40, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=12, v=-16, x=0, x=11, X=40, x=11, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=12] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=12, v=-16, x=11, x=11, X=40, x=0, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=12, v=-16, x=11, x=11, X=40, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=12, v=-14, x=11, x=0, X=40, x=11, Y=1, y=0] [L45] x++ VAL [counter=12, v=-14, x=0, X=40, x=11, x=12, y=0, Y=1] [L31] EXPR counter++ VAL [counter=13, counter++=12, v=-14, X=40, x=0, x=12, x=11, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=13, v=-14, x=0, x=12, X=40, x=12, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=13] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=13, v=-14, x=12, x=0, x=12, X=40, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=13, v=-14, x=12, X=40, x=12, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=13, v=-12, X=40, x=12, x=12, x=0, Y=1, y=0] [L45] x++ VAL [counter=13, v=-12, x=12, x=13, x=0, X=40, Y=1, y=0] [L31] EXPR counter++ VAL [counter=14, counter++=13, v=-12, X=40, x=13, x=0, x=12, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=14, v=-12, x=0, x=13, X=40, x=13, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=14] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=14, v=-12, x=13, X=40, x=13, x=0, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=14, v=-12, x=13, x=13, X=40, x=0, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=14, v=-10, x=0, X=40, x=13, x=13, y=0, Y=1] [L45] x++ VAL [counter=14, v=-10, x=14, x=0, X=40, x=13, Y=1, y=0] [L31] EXPR counter++ VAL [counter=15, counter++=14, v=-10, x=14, X=40, x=13, x=0, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=15, v=-10, X=40, x=14, x=14, x=0, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=15] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=15, v=-10, x=0, x=14, X=40, x=14, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=15, v=-10, x=0, x=14, X=40, x=14, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=15, v=-8, x=14, x=14, X=40, x=0, Y=1, y=0] [L45] x++ VAL [counter=15, v=-8, X=40, x=14, x=15, x=0, y=0, Y=1] [L31] EXPR counter++ VAL [counter=16, counter++=15, v=-8, x=14, x=15, X=40, x=0, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=16, v=-8, x=15, x=0, x=15, X=40, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=16] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=16, v=-8, x=15, X=40, x=15, x=0, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=16, v=-8, X=40, x=15, x=15, x=0, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=16, v=-6, x=15, x=0, x=15, X=40, y=0, Y=1] [L45] x++ VAL [counter=16, v=-6, X=40, x=15, x=16, x=0, Y=1, y=0] [L31] EXPR counter++ VAL [counter=17, counter++=16, v=-6, x=16, x=0, x=15, X=40, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=17, v=-6, x=0, X=40, x=16, x=16, y=0, Y=1] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=17] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=17, v=-6, x=16, x=0, X=40, x=16, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=17, v=-6, x=0, x=16, X=40, x=16, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=17, v=-4, x=16, x=0, x=16, X=40, y=0, Y=1] [L45] x++ VAL [counter=17, v=-4, x=16, x=0, x=17, X=40, Y=1, y=0] [L31] EXPR counter++ VAL [counter=18, counter++=17, v=-4, X=40, x=17, x=16, x=0, Y=1, y=0] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=18, v=-4, X=40, x=17, x=0, x=17, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=18] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=18, v=-4, x=0, X=40, x=17, x=17, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=18, v=-4, x=17, x=17, x=0, X=40, y=0, Y=1] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=18, v=-2, x=17, X=40, x=17, x=0, Y=1, y=0] [L45] x++ VAL [counter=18, v=-2, X=40, x=18, x=0, x=17, y=0, Y=1] [L31] EXPR counter++ VAL [counter=19, counter++=18, v=-2, x=0, x=18, x=17, X=40, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=19, v=-2, x=18, X=40, x=18, x=0, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=19] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=19, v=-2, x=18, x=0, x=18, X=40, y=0, Y=1] [L35] COND FALSE !(!(x <= X)) VAL [counter=19, v=-2, X=40, x=0, x=18, x=18, Y=1, y=0] [L39] COND TRUE v < 0 [L40] v = v + (long long) 2 * Y VAL [counter=19, v=0, X=40, x=0, x=18, x=18, y=0, Y=1] [L45] x++ VAL [counter=19, v=0, X=40, x=18, x=19, x=0, Y=1, y=0] [L31] EXPR counter++ VAL [counter=20, counter++=19, v=0, x=18, x=19, x=0, X=40, y=0, Y=1] [L31] COND TRUE counter++<20 [L32] yx = (long long) Y*x [L33] xy = (long long) X*y VAL [counter=20, v=0, x=19, x=0, X=40, x=19, Y=1, y=0] [L34] CALL __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [\old(cond)=1, counter=20] [L14] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L34] RET __VERIFIER_assert( 2*yx - 2*xy - X + (long long) 2*Y - v == 0) VAL [counter=20, v=0, x=0, X=40, x=19, x=19, Y=1, y=0] [L35] COND FALSE !(!(x <= X)) VAL [counter=20, v=0, x=19, x=0, x=19, X=40, y=0, Y=1] [L39] COND FALSE !(v < 0) [L42] v = v + 2 * ((long long) Y - X) [L43] y++ VAL [counter=20, v=-78, x=0, x=19, x=19, X=40, y=1, Y=1] [L45] x++ VAL [counter=20, v=-78, x=20, x=19, X=40, x=0, y=1, Y=1] [L31] EXPR counter++ VAL [counter=21, counter++=20, v=-78, x=20, x=19, X=40, x=0, Y=1, y=1] [L31] COND FALSE !(counter++<20) [L47] xy = (long long) x*y [L48] yx = (long long) Y*x VAL [counter=21, v=-78, X=40, x=20, x=20, x=20, y=1, Y=1] [L49] CALL __VERIFIER_assert(2*yx - 2*xy - X + (long long) 2*Y - v + 2*y == 0) VAL [\old(cond)=0, counter=21] [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=21] [L16] reach_error() VAL [\old(cond)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.8s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 307 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 306 mSDsluCounter, 806 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 683 mSDsCounter, 76 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 894 IncrementalHoareTripleChecker+Invalid, 970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 76 mSolverCounterUnsat, 123 mSDtfsCounter, 894 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 912 GetRequests, 755 SyntacticMatches, 3 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 745 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=400occurred in iteration=7, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 646 NumberOfCodeBlocks, 456 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 853 ConstructedInterpolants, 1 QuantifiedInterpolants, 2915 SizeOfPredicates, 41 NumberOfNonLiveVariables, 835 ConjunctsInSsa, 134 ConjunctsInUnsatCore, 13 InterpolantComputations, 1 PerfectInterpolantSequences, 4128/5134 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-12-13 17:32:46,773 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4b854163-81cf-448d-8617-7801f2ae5376/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE