./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound10.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL --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 b401bdc3dc8602ce89fd6154d5bf5d175e6ca9a4768bf94d86273beff32d278f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 04:11:06,268 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 04:11:06,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 04:11:06,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 04:11:06,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 04:11:06,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 04:11:06,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 04:11:06,324 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 04:11:06,327 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 04:11:06,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 04:11:06,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 04:11:06,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 04:11:06,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 04:11:06,333 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 04:11:06,335 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 04:11:06,337 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 04:11:06,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 04:11:06,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 04:11:06,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 04:11:06,351 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 04:11:06,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 04:11:06,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 04:11:06,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 04:11:06,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 04:11:06,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 04:11:06,377 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 04:11:06,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 04:11:06,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 04:11:06,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 04:11:06,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 04:11:06,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 04:11:06,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 04:11:06,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 04:11:06,388 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 04:11:06,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 04:11:06,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 04:11:06,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 04:11:06,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 04:11:06,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 04:11:06,394 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 04:11:06,396 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 04:11:06,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 04:11:06,443 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 04:11:06,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 04:11:06,453 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 04:11:06,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 04:11:06,462 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 04:11:06,462 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 04:11:06,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 04:11:06,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 04:11:06,463 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 04:11:06,463 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 04:11:06,464 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 04:11:06,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 04:11:06,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 04:11:06,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 04:11:06,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 04:11:06,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 04:11:06,466 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 04:11:06,466 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 04:11:06,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 04:11:06,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 04:11:06,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 04:11:06,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 04:11:06,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 04:11:06,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 04:11:06,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:11:06,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 04:11:06,468 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 04:11:06,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 04:11:06,469 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 04:11:06,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 04:11:06,470 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 04:11:06,470 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 04:11:06,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 04:11:06,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 04:11:06,471 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b401bdc3dc8602ce89fd6154d5bf5d175e6ca9a4768bf94d86273beff32d278f [2021-11-19 04:11:06,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 04:11:06,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 04:11:06,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 04:11:06,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 04:11:06,802 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 04:11:06,804 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound10.c [2021-11-19 04:11:06,916 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/data/a6e919231/940134ac4ff74b2bbbbc121f921900b6/FLAGabf41d7fe [2021-11-19 04:11:07,402 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 04:11:07,403 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound10.c [2021-11-19 04:11:07,410 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/data/a6e919231/940134ac4ff74b2bbbbc121f921900b6/FLAGabf41d7fe [2021-11-19 04:11:07,779 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/data/a6e919231/940134ac4ff74b2bbbbc121f921900b6 [2021-11-19 04:11:07,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 04:11:07,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 04:11:07,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 04:11:07,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 04:11:07,788 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 04:11:07,789 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:07" (1/1) ... [2021-11-19 04:11:07,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf380ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:07, skipping insertion in model container [2021-11-19 04:11:07,791 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:11:07" (1/1) ... [2021-11-19 04:11:07,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 04:11:07,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 04:11:08,008 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound10.c[525,538] [2021-11-19 04:11:08,024 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:11:08,034 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 04:11:08,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound10.c[525,538] [2021-11-19 04:11:08,055 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 04:11:08,070 INFO L208 MainTranslator]: Completed translation [2021-11-19 04:11:08,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08 WrapperNode [2021-11-19 04:11:08,071 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 04:11:08,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 04:11:08,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 04:11:08,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 04:11:08,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,109 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 42 [2021-11-19 04:11:08,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 04:11:08,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 04:11:08,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 04:11:08,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 04:11:08,120 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,121 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,125 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,129 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,131 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 04:11:08,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 04:11:08,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 04:11:08,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 04:11:08,135 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (1/1) ... [2021-11-19 04:11:08,144 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 04:11:08,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:11:08,175 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 04:11:08,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 04:11:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 04:11:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 04:11:08,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 04:11:08,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 04:11:08,240 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 04:11:08,241 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 04:11:08,320 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 04:11:08,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 04:11:08,502 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 04:11:08,509 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 04:11:08,509 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 04:11:08,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:08 BoogieIcfgContainer [2021-11-19 04:11:08,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 04:11:08,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 04:11:08,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 04:11:08,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 04:11:08,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:11:07" (1/3) ... [2021-11-19 04:11:08,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b327e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:08, skipping insertion in model container [2021-11-19 04:11:08,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:11:08" (2/3) ... [2021-11-19 04:11:08,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b327e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:11:08, skipping insertion in model container [2021-11-19 04:11:08,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:08" (3/3) ... [2021-11-19 04:11:08,531 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound10.c [2021-11-19 04:11:08,537 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 04:11:08,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 04:11:08,597 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 04:11:08,616 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 04:11:08,617 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 04:11:08,638 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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) [2021-11-19 04:11:08,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-19 04:11:08,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:08,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:11:08,645 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:11:08,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:08,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2021-11-19 04:11:08,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:11:08,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567112961] [2021-11-19 04:11:08,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:08,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:11:08,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:08,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:11:08,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567112961] [2021-11-19 04:11:08,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567112961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:08,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:08,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 04:11:08,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255033136] [2021-11-19 04:11:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:08,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 04:11:08,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:11:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 04:11:08,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:11:08,844 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-19 04:11:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:08,864 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2021-11-19 04:11:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 04:11:08,866 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2021-11-19 04:11:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:08,874 INFO L225 Difference]: With dead ends: 32 [2021-11-19 04:11:08,874 INFO L226 Difference]: Without dead ends: 13 [2021-11-19 04:11:08,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 04:11:08,882 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:08,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:11:08,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-11-19 04:11:08,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-11-19 04:11:08,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:11:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2021-11-19 04:11:08,923 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2021-11-19 04:11:08,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:08,923 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2021-11-19 04:11:08,924 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-19 04:11:08,924 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2021-11-19 04:11:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 04:11:08,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:08,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:11:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 04:11:08,926 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:11:08,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 178410715, now seen corresponding path program 1 times [2021-11-19 04:11:08,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:11:08,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716295423] [2021-11-19 04:11:08,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:08,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:11:08,952 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:11:08,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1667038081] [2021-11-19 04:11:08,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:08,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:08,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:11:08,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:11:08,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-19 04:11:09,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:09,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 04:11:09,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:09,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:11:09,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:11:09,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716295423] [2021-11-19 04:11:09,145 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:11:09,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667038081] [2021-11-19 04:11:09,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667038081] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:09,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:09,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 04:11:09,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430595119] [2021-11-19 04:11:09,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:09,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 04:11:09,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:11:09,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 04:11:09,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:11:09,150 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2021-11-19 04:11:09,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:09,168 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-19 04:11:09,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 04:11:09,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 [2021-11-19 04:11:09,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:09,169 INFO L225 Difference]: With dead ends: 22 [2021-11-19 04:11:09,170 INFO L226 Difference]: Without dead ends: 15 [2021-11-19 04:11:09,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 04:11:09,172 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:09,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:11:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-11-19 04:11:09,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-11-19 04:11:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:11:09,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-11-19 04:11:09,180 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 8 [2021-11-19 04:11:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:09,180 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-11-19 04:11:09,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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) [2021-11-19 04:11:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-11-19 04:11:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-19 04:11:09,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:09,182 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:11:09,222 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:09,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:09,408 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:11:09,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:09,409 INFO L85 PathProgramCache]: Analyzing trace with hash 180198175, now seen corresponding path program 1 times [2021-11-19 04:11:09,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:11:09,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708932312] [2021-11-19 04:11:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:09,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:11:09,432 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:11:09,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545945134] [2021-11-19 04:11:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:09,433 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:09,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:11:09,435 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:11:09,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-19 04:11:09,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:09,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 04:11:09,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:09,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-19 04:11:09,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:11:09,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708932312] [2021-11-19 04:11:09,567 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:11:09,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545945134] [2021-11-19 04:11:09,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545945134] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 04:11:09,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 04:11:09,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 04:11:09,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072623076] [2021-11-19 04:11:09,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 04:11:09,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 04:11:09,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:11:09,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 04:11:09,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 04:11:09,571 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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) [2021-11-19 04:11:09,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:09,632 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-11-19 04:11:09,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 04:11:09,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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 [2021-11-19 04:11:09,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:09,634 INFO L225 Difference]: With dead ends: 24 [2021-11-19 04:11:09,634 INFO L226 Difference]: Without dead ends: 21 [2021-11-19 04:11:09,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 04:11:09,637 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:09,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 45 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 04:11:09,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-19 04:11:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-19 04:11:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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) [2021-11-19 04:11:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2021-11-19 04:11:09,645 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2021-11-19 04:11:09,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:09,650 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2021-11-19 04:11:09,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) internal successors, (7), 4 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) [2021-11-19 04:11:09,651 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2021-11-19 04:11:09,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 04:11:09,653 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:09,653 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:11:09,692 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:09,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:09,876 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:11:09,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:09,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1542398814, now seen corresponding path program 1 times [2021-11-19 04:11:09,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:11:09,878 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832462887] [2021-11-19 04:11:09,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:09,878 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:11:09,892 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:11:09,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009875325] [2021-11-19 04:11:09,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:09,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:09,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:11:09,895 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:11:09,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-19 04:11:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:09,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 04:11:09,952 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:10,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:10,162 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:10,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:11:10,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832462887] [2021-11-19 04:11:10,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:11:10,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009875325] [2021-11-19 04:11:10,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009875325] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:11:10,164 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:11:10,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-11-19 04:11:10,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126553886] [2021-11-19 04:11:10,165 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:11:10,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 04:11:10,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:11:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 04:11:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:11:10,167 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-11-19 04:11:10,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:10,311 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2021-11-19 04:11:10,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 04:11:10,314 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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 16 [2021-11-19 04:11:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:10,315 INFO L225 Difference]: With dead ends: 52 [2021-11-19 04:11:10,315 INFO L226 Difference]: Without dead ends: 45 [2021-11-19 04:11:10,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-19 04:11:10,317 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:10,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 64 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 04:11:10,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-19 04:11:10,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2021-11-19 04:11:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 32 states have internal predecessors, (36), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-19 04:11:10,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2021-11-19 04:11:10,328 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 16 [2021-11-19 04:11:10,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:10,328 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2021-11-19 04:11:10,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 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) [2021-11-19 04:11:10,329 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2021-11-19 04:11:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-19 04:11:10,334 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 04:11:10,338 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 04:11:10,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:10,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:10,560 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 04:11:10,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 04:11:10,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1540611354, now seen corresponding path program 1 times [2021-11-19 04:11:10,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 04:11:10,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957985785] [2021-11-19 04:11:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:10,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 04:11:10,572 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-19 04:11:10,572 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305378853] [2021-11-19 04:11:10,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 04:11:10,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:10,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 04:11:10,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 04:11:10,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-19 04:11:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 04:11:10,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-19 04:11:10,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 04:11:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:10,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 04:11:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 04:11:11,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 04:11:11,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957985785] [2021-11-19 04:11:11,052 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-19 04:11:11,052 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305378853] [2021-11-19 04:11:11,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305378853] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 04:11:11,052 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-19 04:11:11,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-11-19 04:11:11,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629282125] [2021-11-19 04:11:11,054 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-19 04:11:11,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 04:11:11,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 04:11:11,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 04:11:11,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 04:11:11,057 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:11:11,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 04:11:11,319 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-11-19 04:11:11,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 04:11:11,321 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-19 04:11:11,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 04:11:11,321 INFO L225 Difference]: With dead ends: 41 [2021-11-19 04:11:11,321 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 04:11:11,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 04:11:11,324 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 9 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 04:11:11,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 44 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 04:11:11,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 04:11:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 04:11:11,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 04:11:11,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 04:11:11,326 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-11-19 04:11:11,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 04:11:11,326 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 04:11:11,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-19 04:11:11,326 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 04:11:11,327 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 04:11:11,330 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-19 04:11:11,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-19 04:11:11,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 04:11:11,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-19 04:11:11,624 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-19 04:11:11,624 INFO L858 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2021-11-19 04:11:11,624 INFO L858 garLoopResultBuilder]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2021-11-19 04:11:11,624 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-19 04:11:11,625 INFO L854 garLoopResultBuilder]: At program point L34-3(lines 34 43) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-19 04:11:11,625 INFO L854 garLoopResultBuilder]: At program point L34-4(lines 34 43) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-19 04:11:11,625 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-19 04:11:11,625 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-19 04:11:11,625 INFO L861 garLoopResultBuilder]: At program point L45(lines 24 46) the Hoare annotation is: true [2021-11-19 04:11:11,625 INFO L854 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (= (+ (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~z~0#1|) |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~z~0#1|) 1)) [2021-11-19 04:11:11,626 INFO L858 garLoopResultBuilder]: For program point L35-1(lines 34 43) no Hoare annotation was computed. [2021-11-19 04:11:11,626 INFO L858 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2021-11-19 04:11:11,626 INFO L858 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2021-11-19 04:11:11,626 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2021-11-19 04:11:11,626 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2021-11-19 04:11:11,626 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2021-11-19 04:11:11,626 INFO L858 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2021-11-19 04:11:11,631 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2021-11-19 04:11:11,633 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 04:11:11,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 04:11:11 BoogieIcfgContainer [2021-11-19 04:11:11,648 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 04:11:11,649 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 04:11:11,649 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 04:11:11,650 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 04:11:11,650 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:11:08" (3/4) ... [2021-11-19 04:11:11,654 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 04:11:11,662 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2021-11-19 04:11:11,666 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-11-19 04:11:11,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-11-19 04:11:11,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 04:11:11,667 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 04:11:11,703 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/witness.graphml [2021-11-19 04:11:11,704 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 04:11:11,704 INFO L158 Benchmark]: Toolchain (without parser) took 3921.26ms. Allocated memory is still 151.0MB. Free memory was 117.7MB in the beginning and 111.1MB in the end (delta: 6.6MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-11-19 04:11:11,705 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:11:11,705 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.76ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 128.5MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-19 04:11:11,706 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.50ms. Allocated memory is still 151.0MB. Free memory was 128.5MB in the beginning and 127.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:11:11,706 INFO L158 Benchmark]: Boogie Preprocessor took 22.32ms. Allocated memory is still 151.0MB. Free memory was 127.0MB in the beginning and 126.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 04:11:11,707 INFO L158 Benchmark]: RCFGBuilder took 378.51ms. Allocated memory is still 151.0MB. Free memory was 126.0MB in the beginning and 116.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 04:11:11,707 INFO L158 Benchmark]: TraceAbstraction took 3126.68ms. Allocated memory is still 151.0MB. Free memory was 116.0MB in the beginning and 114.0MB in the end (delta: 2.0MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2021-11-19 04:11:11,708 INFO L158 Benchmark]: Witness Printer took 54.48ms. Allocated memory is still 151.0MB. Free memory was 114.0MB in the beginning and 111.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 04:11:11,710 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 53.6MB in the beginning and 53.6MB in the end (delta: 29.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 286.76ms. Allocated memory is still 151.0MB. Free memory was 117.3MB in the beginning and 128.5MB in the end (delta: -11.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.50ms. Allocated memory is still 151.0MB. Free memory was 128.5MB in the beginning and 127.0MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.32ms. Allocated memory is still 151.0MB. Free memory was 127.0MB in the beginning and 126.0MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 378.51ms. Allocated memory is still 151.0MB. Free memory was 126.0MB in the beginning and 116.6MB in the end (delta: 9.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3126.68ms. Allocated memory is still 151.0MB. Free memory was 116.0MB in the beginning and 114.0MB in the end (delta: 2.0MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * Witness Printer took 54.48ms. Allocated memory is still 151.0MB. Free memory was 114.0MB in the beginning and 111.1MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. 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 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.0s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38 mSDsluCounter, 207 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 135 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 72 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=4, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 16 PreInvPairs, 30 NumberOfFragments, 35 HoareAnnotationTreeSize, 16 FomulaSimplifications, 60 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 114 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 254 SizeOfPredicates, 4 NumberOfNonLiveVariables, 246 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 8/18 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: y * z + x == x * z + 1 RESULT: Ultimate proved your program to be correct! [2021-11-19 04:11:11,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_80b752b7-1b4d-4b3b-8286-de80525e0a52/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE