./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:27:14,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:27:14,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:27:14,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:27:14,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:27:14,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:27:14,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:27:14,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:27:14,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:27:14,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:27:14,243 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:27:14,245 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:27:14,245 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:27:14,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:27:14,247 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:27:14,249 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:27:14,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:27:14,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:27:14,252 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:27:14,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:27:14,257 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:27:14,258 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:27:14,259 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:27:14,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:27:14,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:27:14,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:27:14,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:27:14,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:27:14,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:27:14,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:27:14,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:27:14,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:27:14,270 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:27:14,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:27:14,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:27:14,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:27:14,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:27:14,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:27:14,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:27:14,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:27:14,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:27:14,274 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:27:14,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:27:14,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:27:14,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:27:14,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:27:14,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:27:14,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:27:14,298 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:27:14,298 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:27:14,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:27:14,298 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:27:14,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:27:14,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:27:14,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:27:14,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:27:14,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:27:14,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:27:14,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:27:14,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:27:14,300 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:27:14,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:27:14,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:27:14,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:27:14,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:27:14,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:27:14,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:27:14,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:27:14,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:27:14,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:27:14,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:27:14,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:27:14,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:27:14,302 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:27:14,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:27:14,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:27:14,303 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7f1683dc0c60d20b83300f79a9b15e37cd1fd05703e492aec10298f1b5a1afa [2022-07-19 16:27:14,485 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:27:14,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:27:14,501 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:27:14,502 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:27:14,504 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:27:14,504 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2022-07-19 16:27:14,562 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e0a95da/94ea14194b3340fa927188aeb7a6079f/FLAG7fb57a943 [2022-07-19 16:27:14,923 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:27:14,923 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c [2022-07-19 16:27:14,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e0a95da/94ea14194b3340fa927188aeb7a6079f/FLAG7fb57a943 [2022-07-19 16:27:14,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32e0a95da/94ea14194b3340fa927188aeb7a6079f [2022-07-19 16:27:14,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:27:14,941 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:27:14,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:27:14,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:27:14,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:27:14,952 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:27:14" (1/1) ... [2022-07-19 16:27:14,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486601bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:14, skipping insertion in model container [2022-07-19 16:27:14,953 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:27:14" (1/1) ... [2022-07-19 16:27:14,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:27:14,971 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:27:15,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2022-07-19 16:27:15,117 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:27:15,122 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:27:15,131 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/prod4br-ll_valuebound1.c[524,537] [2022-07-19 16:27:15,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:27:15,150 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:27:15,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15 WrapperNode [2022-07-19 16:27:15,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:27:15,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:27:15,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:27:15,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:27:15,157 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,162 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,182 INFO L137 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 53 [2022-07-19 16:27:15,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:27:15,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:27:15,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:27:15,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:27:15,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:27:15,218 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:27:15,218 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:27:15,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:27:15,219 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (1/1) ... [2022-07-19 16:27:15,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:27:15,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:27:15,244 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 16:27:15,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 16:27:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:27:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 16:27:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 16:27:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:27:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:27:15,290 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:27:15,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 16:27:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 16:27:15,341 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:27:15,343 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:27:15,484 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:27:15,488 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:27:15,489 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:27:15,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:27:15 BoogieIcfgContainer [2022-07-19 16:27:15,490 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:27:15,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:27:15,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:27:15,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:27:15,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:27:14" (1/3) ... [2022-07-19 16:27:15,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135a3303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:27:15, skipping insertion in model container [2022-07-19 16:27:15,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:27:15" (2/3) ... [2022-07-19 16:27:15,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@135a3303 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:27:15, skipping insertion in model container [2022-07-19 16:27:15,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:27:15" (3/3) ... [2022-07-19 16:27:15,496 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_valuebound1.c [2022-07-19 16:27:15,506 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:27:15,509 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:27:15,546 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:27:15,551 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f438d92, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2ce99f84 [2022-07-19 16:27:15,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:27:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 16:27:15,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 16:27:15,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:27:15,560 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:27:15,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:27:15,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:27:15,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1472905330, now seen corresponding path program 1 times [2022-07-19 16:27:15,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:27:15,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553810764] [2022-07-19 16:27:15,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:15,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:27:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:15,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:27:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:15,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:27:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:15,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:27:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:15,688 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:27:15,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:27:15,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553810764] [2022-07-19 16:27:15,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553810764] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:27:15,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:27:15,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 16:27:15,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453778692] [2022-07-19 16:27:15,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:27:15,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 16:27:15,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:27:15,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 16:27:15,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 16:27:15,722 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 16:27:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:27:15,738 INFO L93 Difference]: Finished difference Result 55 states and 82 transitions. [2022-07-19 16:27:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 16:27:15,741 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-07-19 16:27:15,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:27:15,754 INFO L225 Difference]: With dead ends: 55 [2022-07-19 16:27:15,755 INFO L226 Difference]: Without dead ends: 25 [2022-07-19 16:27:15,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 16:27:15,760 INFO L413 NwaCegarLoop]: 36 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, 36 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 [2022-07-19 16:27:15,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:27:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-19 16:27:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-19 16:27:15,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-07-19 16:27:15,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 32 transitions. [2022-07-19 16:27:15,795 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 32 transitions. Word has length 24 [2022-07-19 16:27:15,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:27:15,796 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 32 transitions. [2022-07-19 16:27:15,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-19 16:27:15,796 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 32 transitions. [2022-07-19 16:27:15,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 16:27:15,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:27:15,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:27:15,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:27:15,798 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:27:15,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:27:15,798 INFO L85 PathProgramCache]: Analyzing trace with hash 324198000, now seen corresponding path program 1 times [2022-07-19 16:27:15,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:27:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422597823] [2022-07-19 16:27:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:27:15,819 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 16:27:15,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1574566073] [2022-07-19 16:27:15,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:15,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:27:15,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:27:15,830 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:27:15,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:27:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:15,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 16:27:15,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:27:16,130 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:27:16,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:27:16,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:27:16,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422597823] [2022-07-19 16:27:16,133 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 16:27:16,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1574566073] [2022-07-19 16:27:16,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1574566073] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:27:16,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:27:16,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:27:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135667678] [2022-07-19 16:27:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:27:16,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:27:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:27:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:27:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:27:16,138 INFO L87 Difference]: Start difference. First operand 25 states and 32 transitions. Second operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 16:27:16,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:27:16,324 INFO L93 Difference]: Finished difference Result 51 states and 69 transitions. [2022-07-19 16:27:16,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:27:16,325 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2022-07-19 16:27:16,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:27:16,326 INFO L225 Difference]: With dead ends: 51 [2022-07-19 16:27:16,326 INFO L226 Difference]: Without dead ends: 37 [2022-07-19 16:27:16,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:27:16,327 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 26 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:27:16,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 90 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:27:16,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-07-19 16:27:16,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2022-07-19 16:27:16,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 24 states have internal predecessors, (29), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 16:27:16,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2022-07-19 16:27:16,339 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 24 [2022-07-19 16:27:16,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:27:16,339 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2022-07-19 16:27:16,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 7 states have internal predecessors, (11), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-19 16:27:16,340 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2022-07-19 16:27:16,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-19 16:27:16,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:27:16,341 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:27:16,360 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 16:27:16,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:27:16,556 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:27:16,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:27:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash 693549193, now seen corresponding path program 1 times [2022-07-19 16:27:16,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:27:16,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381835863] [2022-07-19 16:27:16,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:16,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:27:16,566 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 16:27:16,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932950045] [2022-07-19 16:27:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:16,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:27:16,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:27:16,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:27:16,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:27:16,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:16,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-19 16:27:16,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:27:16,832 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:27:16,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:27:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:27:17,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:27:17,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381835863] [2022-07-19 16:27:17,033 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 16:27:17,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932950045] [2022-07-19 16:27:17,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932950045] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:27:17,033 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 16:27:17,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2022-07-19 16:27:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987801772] [2022-07-19 16:27:17,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 16:27:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 16:27:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:27:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 16:27:17,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:27:17,036 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 16:27:17,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:27:17,308 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2022-07-19 16:27:17,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 16:27:17,309 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 30 [2022-07-19 16:27:17,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:27:17,310 INFO L225 Difference]: With dead ends: 45 [2022-07-19 16:27:17,310 INFO L226 Difference]: Without dead ends: 41 [2022-07-19 16:27:17,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:27:17,311 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:27:17,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 100 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 16:27:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-07-19 16:27:17,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2022-07-19 16:27:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 16:27:17,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2022-07-19 16:27:17,317 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 30 [2022-07-19 16:27:17,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:27:17,317 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2022-07-19 16:27:17,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-19 16:27:17,318 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2022-07-19 16:27:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 16:27:17,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:27:17,318 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:27:17,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 16:27:17,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 16:27:17,519 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:27:17,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:27:17,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1144244799, now seen corresponding path program 1 times [2022-07-19 16:27:17,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:27:17,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942531026] [2022-07-19 16:27:17,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:17,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:27:17,537 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 16:27:17,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [250303741] [2022-07-19 16:27:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:17,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:27:17,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:27:17,541 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:27:17,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 16:27:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:17,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 16:27:17,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:27:17,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:27:17,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:27:17,722 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:27:17,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:27:17,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942531026] [2022-07-19 16:27:17,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 16:27:17,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250303741] [2022-07-19 16:27:17,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250303741] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:27:17,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 16:27:17,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-07-19 16:27:17,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500172009] [2022-07-19 16:27:17,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 16:27:17,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 16:27:17,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:27:17,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 16:27:17,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:27:17,724 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 16:27:17,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:27:17,788 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2022-07-19 16:27:17,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:27:17,789 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 34 [2022-07-19 16:27:17,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:27:17,790 INFO L225 Difference]: With dead ends: 56 [2022-07-19 16:27:17,790 INFO L226 Difference]: Without dead ends: 38 [2022-07-19 16:27:17,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:27:17,791 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:27:17,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 98 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:27:17,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-07-19 16:27:17,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-07-19 16:27:17,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 16:27:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-07-19 16:27:17,796 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 34 [2022-07-19 16:27:17,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:27:17,796 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-07-19 16:27:17,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 6 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2022-07-19 16:27:17,796 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-07-19 16:27:17,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-07-19 16:27:17,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:27:17,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:27:17,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 16:27:18,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:27:18,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:27:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:27:18,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1201503101, now seen corresponding path program 1 times [2022-07-19 16:27:18,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:27:18,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143946304] [2022-07-19 16:27:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:18,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:27:18,028 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-19 16:27:18,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [134118538] [2022-07-19 16:27:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:27:18,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:27:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:27:18,030 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:27:18,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 16:27:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:27:18,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-19 16:27:18,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:27:18,236 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:27:18,236 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:27:18,328 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 16:27:18,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:27:18,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143946304] [2022-07-19 16:27:18,328 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-19 16:27:18,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134118538] [2022-07-19 16:27:18,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134118538] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:27:18,329 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 16:27:18,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 14 [2022-07-19 16:27:18,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102114341] [2022-07-19 16:27:18,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 16:27:18,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:27:18,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:27:18,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:27:18,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:27:18,331 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:27:18,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:27:18,439 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2022-07-19 16:27:18,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:27:18,440 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) Word has length 34 [2022-07-19 16:27:18,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:27:18,440 INFO L225 Difference]: With dead ends: 52 [2022-07-19 16:27:18,440 INFO L226 Difference]: Without dead ends: 0 [2022-07-19 16:27:18,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:27:18,441 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:27:18,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 87 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 16:27:18,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-19 16:27:18,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-19 16:27:18,442 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) [2022-07-19 16:27:18,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-19 16:27:18,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2022-07-19 16:27:18,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:27:18,443 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-19 16:27:18,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 11 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:27:18,443 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-19 16:27:18,443 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-19 16:27:18,445 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 16:27:18,473 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 16:27:18,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:27:18,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-19 16:27:18,919 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-19 16:27:18,919 INFO L899 garLoopResultBuilder]: For program point L27(line 27) no Hoare annotation was computed. [2022-07-19 16:27:18,919 INFO L899 garLoopResultBuilder]: For program point L58(line 58) no Hoare annotation was computed. [2022-07-19 16:27:18,919 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 54) no Hoare annotation was computed. [2022-07-19 16:27:18,919 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 54) no Hoare annotation was computed. [2022-07-19 16:27:18,920 INFO L895 garLoopResultBuilder]: At program point L34-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 1))) (or (and (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~p~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse2 .cse3 (= |ULTIMATE.start_main_~a~0#1| 0)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) .cse2 (= (+ |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) |ULTIMATE.start_main_~q~0#1|) .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~b~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) [2022-07-19 16:27:18,920 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-19 16:27:18,920 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-19 16:27:18,920 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-19 16:27:18,920 INFO L902 garLoopResultBuilder]: At program point L59(lines 19 60) the Hoare annotation is: true [2022-07-19 16:27:18,920 INFO L895 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) [2022-07-19 16:27:18,920 INFO L895 garLoopResultBuilder]: At program point L26-1(line 26) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2022-07-19 16:27:18,920 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (<= 0 |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 1))) (or (and (= |ULTIMATE.start_main_~q~0#1| (* |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~y~0#1|)) (<= 1 |ULTIMATE.start_main_~p~0#1|) .cse0 .cse1 (<= |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~b~0#1|) .cse2 .cse3 (= |ULTIMATE.start_main_~a~0#1| 0)) (and .cse0 (= |ULTIMATE.start_main_~p~0#1| 1) .cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) .cse2 (= (+ |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) |ULTIMATE.start_main_~q~0#1|) .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~b~0#1| 1)) (<= 0 |ULTIMATE.start_main_~a~0#1|)))) [2022-07-19 16:27:18,920 INFO L902 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: true [2022-07-19 16:27:18,920 INFO L899 garLoopResultBuilder]: For program point L24-1(line 24) no Hoare annotation was computed. [2022-07-19 16:27:18,920 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 54) no Hoare annotation was computed. [2022-07-19 16:27:18,920 INFO L895 garLoopResultBuilder]: At program point L47-2(lines 34 55) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) .cse2 (= (+ |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) |ULTIMATE.start_main_~q~0#1|) .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~b~0#1| 1)) .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-07-19 16:27:18,920 INFO L895 garLoopResultBuilder]: At program point L35(line 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|)) (.cse2 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse3 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse4 (<= 0 |ULTIMATE.start_main_~a~0#1|))) (or (and .cse0 .cse1 (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~a~0#1| 1)) .cse2 (= (+ |ULTIMATE.start_main_~p~0#1| (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~p~0#1|) (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~p~0#1|)) |ULTIMATE.start_main_~q~0#1|) .cse3 (= |ULTIMATE.start_main_~y~0#1| (+ |ULTIMATE.start_main_~b~0#1| 1)) .cse4) (and .cse0 .cse1 (= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0) .cse2 .cse3 .cse4 (= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-07-19 16:27:18,920 INFO L899 garLoopResultBuilder]: For program point L35-1(lines 34 55) no Hoare annotation was computed. [2022-07-19 16:27:18,920 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 8 10) the Hoare annotation is: true [2022-07-19 16:27:18,920 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2022-07-19 16:27:18,921 INFO L899 garLoopResultBuilder]: For program point L9-2(lines 8 10) no Hoare annotation was computed. [2022-07-19 16:27:18,921 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 8 10) no Hoare annotation was computed. [2022-07-19 16:27:18,921 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 11 17) the Hoare annotation is: true [2022-07-19 16:27:18,921 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2022-07-19 16:27:18,921 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2022-07-19 16:27:18,921 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2022-07-19 16:27:18,921 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2022-07-19 16:27:18,921 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2022-07-19 16:27:18,923 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-19 16:27:18,924 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 16:27:18,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 04:27:18 BoogieIcfgContainer [2022-07-19 16:27:18,944 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 16:27:18,944 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 16:27:18,944 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 16:27:18,944 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 16:27:18,945 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:27:15" (3/4) ... [2022-07-19 16:27:18,946 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 16:27:18,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-19 16:27:18,951 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-19 16:27:18,954 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-19 16:27:18,954 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-19 16:27:18,954 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 16:27:18,955 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 16:27:18,984 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 16:27:18,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 16:27:18,984 INFO L158 Benchmark]: Toolchain (without parser) took 4042.82ms. Allocated memory was 94.4MB in the beginning and 146.8MB in the end (delta: 52.4MB). Free memory was 65.5MB in the beginning and 122.1MB in the end (delta: -56.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 16:27:18,985 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 16:27:18,985 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.73ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 65.3MB in the beginning and 98.3MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 16:27:18,985 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.11ms. Allocated memory is still 121.6MB. Free memory was 98.3MB in the beginning and 96.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 16:27:18,985 INFO L158 Benchmark]: Boogie Preprocessor took 33.37ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 95.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 16:27:18,985 INFO L158 Benchmark]: RCFGBuilder took 272.51ms. Allocated memory is still 121.6MB. Free memory was 95.3MB in the beginning and 84.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 16:27:18,986 INFO L158 Benchmark]: TraceAbstraction took 3452.23ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 84.4MB in the beginning and 124.2MB in the end (delta: -39.8MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2022-07-19 16:27:18,986 INFO L158 Benchmark]: Witness Printer took 39.88ms. Allocated memory is still 146.8MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 16:27:18,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 94.4MB. Free memory was 53.2MB in the beginning and 53.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 201.73ms. Allocated memory was 94.4MB in the beginning and 121.6MB in the end (delta: 27.3MB). Free memory was 65.3MB in the beginning and 98.3MB in the end (delta: -33.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.11ms. Allocated memory is still 121.6MB. Free memory was 98.3MB in the beginning and 96.7MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.37ms. Allocated memory is still 121.6MB. Free memory was 96.7MB in the beginning and 95.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 272.51ms. Allocated memory is still 121.6MB. Free memory was 95.3MB in the beginning and 84.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 3452.23ms. Allocated memory was 121.6MB in the beginning and 146.8MB in the end (delta: 25.2MB). Free memory was 84.4MB in the beginning and 124.2MB in the end (delta: -39.8MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. * Witness Printer took 39.88ms. Allocated memory is still 146.8MB. Free memory was 124.2MB in the beginning and 122.1MB in the end (delta: 2.1MB). 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: 14]: 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 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.4s, OverallIterations: 5, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 103 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 92 mSDsluCounter, 411 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 305 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 658 IncrementalHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 106 mSDtfsCounter, 658 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 239 GetRequests, 181 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=3, InterpolantAutomatonStates: 42, 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, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 31 PreInvPairs, 42 NumberOfFragments, 282 HoareAnnotationTreeSize, 31 FomulaSimplifications, 30 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 354 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 236 ConstructedInterpolants, 0 QuantifiedInterpolants, 940 SizeOfPredicates, 21 NumberOfNonLiveVariables, 357 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 98/116 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: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((p == 1 && 1 <= y) && x == a + 1) && x <= 1) && p + a * p + b * p == q) && y <= 1) && y == b + 1) && 0 <= a) || (((((((p == 1 && 1 <= y) && b == y) && q == 0) && x <= 1) && y <= 1) && 0 <= a) && a == x) RESULT: Ultimate proved your program to be correct! [2022-07-19 16:27:19,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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