./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 574ddb4e 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/cohendiv-ll_unwindbound20.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 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 16:38:41,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 16:38:41,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 16:38:41,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 16:38:41,292 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 16:38:41,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 16:38:41,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 16:38:41,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 16:38:41,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 16:38:41,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 16:38:41,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 16:38:41,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 16:38:41,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 16:38:41,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 16:38:41,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 16:38:41,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 16:38:41,312 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 16:38:41,313 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 16:38:41,314 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 16:38:41,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 16:38:41,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 16:38:41,320 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 16:38:41,321 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 16:38:41,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 16:38:41,327 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 16:38:41,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 16:38:41,328 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 16:38:41,329 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 16:38:41,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 16:38:41,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 16:38:41,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 16:38:41,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 16:38:41,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 16:38:41,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 16:38:41,334 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 16:38:41,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 16:38:41,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 16:38:41,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 16:38:41,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 16:38:41,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 16:38:41,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 16:38:41,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-18 16:38:41,352 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 16:38:41,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 16:38:41,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 16:38:41,353 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 16:38:41,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 16:38:41,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 16:38:41,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 16:38:41,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 16:38:41,354 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 16:38:41,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 16:38:41,355 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 16:38:41,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 16:38:41,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 16:38:41,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 16:38:41,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-18 16:38:41,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 16:38:41,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-18 16:38:41,356 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 16:38:41,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-18 16:38:41,356 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 16:38:41,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-18 16:38:41,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 16:38:41,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 16:38:41,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 16:38:41,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:38:41,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 16:38:41,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 16:38:41,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-18 16:38:41,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 16:38:41,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 16:38:41,358 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 16:38:41,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-18 16:38:41,358 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 16:38:41,359 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 16:38:41,359 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 16:38:41,359 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93ad3f0e42b4c26a38d8e528f550b89aecdadec634fd1fe3b21f86af4528c655 [2023-02-18 16:38:41,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 16:38:41,600 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 16:38:41,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 16:38:41,603 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 16:38:41,603 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 16:38:41,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2023-02-18 16:38:42,633 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 16:38:42,788 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 16:38:42,788 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound20.c [2023-02-18 16:38:42,792 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6157a576/1703aae1dd8d444087434811ea7242bb/FLAGcfb2db699 [2023-02-18 16:38:42,802 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6157a576/1703aae1dd8d444087434811ea7242bb [2023-02-18 16:38:42,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 16:38:42,805 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 16:38:42,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 16:38:42,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 16:38:42,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 16:38:42,809 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7319c34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42, skipping insertion in model container [2023-02-18 16:38:42,810 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 16:38:42,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 16:38:42,910 WARN L237 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/cohendiv-ll_unwindbound20.c[576,589] [2023-02-18 16:38:42,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:38:42,928 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 16:38:42,936 WARN L237 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/cohendiv-ll_unwindbound20.c[576,589] [2023-02-18 16:38:42,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 16:38:42,949 INFO L208 MainTranslator]: Completed translation [2023-02-18 16:38:42,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42 WrapperNode [2023-02-18 16:38:42,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 16:38:42,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 16:38:42,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 16:38:42,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 16:38:42,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,972 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-02-18 16:38:42,973 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 16:38:42,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 16:38:42,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 16:38:42,974 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 16:38:42,980 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,987 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 16:38:42,989 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 16:38:42,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 16:38:42,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 16:38:42,990 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (1/1) ... [2023-02-18 16:38:42,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 16:38:43,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:43,013 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) [2023-02-18 16:38:43,029 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 [2023-02-18 16:38:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 16:38:43,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 16:38:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 16:38:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 16:38:43,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-18 16:38:43,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-18 16:38:43,113 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 16:38:43,115 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 16:38:43,266 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 16:38:43,271 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 16:38:43,271 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 16:38:43,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:38:43 BoogieIcfgContainer [2023-02-18 16:38:43,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 16:38:43,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 16:38:43,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 16:38:43,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 16:38:43,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 04:38:42" (1/3) ... [2023-02-18 16:38:43,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5363dcf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:38:43, skipping insertion in model container [2023-02-18 16:38:43,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 04:38:42" (2/3) ... [2023-02-18 16:38:43,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5363dcf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 04:38:43, skipping insertion in model container [2023-02-18 16:38:43,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:38:43" (3/3) ... [2023-02-18 16:38:43,278 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound20.c [2023-02-18 16:38:43,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 16:38:43,290 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-18 16:38:43,321 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 16:38:43,337 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6725cebf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 16:38:43,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-18 16:38:43,353 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), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 16:38:43,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-18 16:38:43,359 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:43,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:43,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:43,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:43,363 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2023-02-18 16:38:43,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:43,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237408076] [2023-02-18 16:38:43,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:43,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:43,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:43,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:43,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237408076] [2023-02-18 16:38:43,462 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 16:38:43,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1822128255] [2023-02-18 16:38:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:43,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:43,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:43,464 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) [2023-02-18 16:38:43,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 16:38:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:43,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-18 16:38:43,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:43,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:43,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:43,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1822128255] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:43,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:43,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 16:38:43,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527658413] [2023-02-18 16:38:43,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:43,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-18 16:38:43,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:43,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-18 16:38:43,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:38:43,546 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), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-02-18 16:38:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:43,561 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-18 16:38:43,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-18 16:38:43,562 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 9 [2023-02-18 16:38:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:43,567 INFO L225 Difference]: With dead ends: 55 [2023-02-18 16:38:43,567 INFO L226 Difference]: Without dead ends: 25 [2023-02-18 16:38:43,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-18 16:38:43,572 INFO L413 NwaCegarLoop]: 38 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, 38 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 [2023-02-18 16:38:43,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:43,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-18 16:38:43,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-18 16:38:43,600 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), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 16:38:43,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-18 16:38:43,604 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2023-02-18 16:38:43,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:43,604 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-18 16:38:43,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2023-02-18 16:38:43,605 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-18 16:38:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 16:38:43,606 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:43,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:43,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:43,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-18 16:38:43,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:43,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:43,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2023-02-18 16:38:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:43,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870656659] [2023-02-18 16:38:43,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:43,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:43,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870656659] [2023-02-18 16:38:43,838 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-18 16:38:43,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711084908] [2023-02-18 16:38:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:43,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:43,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:43,839 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) [2023-02-18 16:38:43,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 16:38:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:43,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-18 16:38:43,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:43,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:43,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:43,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711084908] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:43,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:43,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-18 16:38:43,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787922488] [2023-02-18 16:38:43,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:43,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 16:38:43,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:43,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 16:38:43,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 16:38:43,927 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-18 16:38:43,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:43,939 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-02-18 16:38:43,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 16:38:43,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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 10 [2023-02-18 16:38:43,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:43,940 INFO L225 Difference]: With dead ends: 34 [2023-02-18 16:38:43,940 INFO L226 Difference]: Without dead ends: 27 [2023-02-18 16:38:43,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 16:38:43,942 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:43,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:43,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-18 16:38:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-18 16:38:43,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-18 16:38:43,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-18 16:38:43,947 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2023-02-18 16:38:43,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:43,947 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-18 16:38:43,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) [2023-02-18 16:38:43,948 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-18 16:38:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-18 16:38:43,948 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:43,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:43,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:44,153 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,SelfDestructingSolverStorable1 [2023-02-18 16:38:44,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:44,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:44,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2023-02-18 16:38:44,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:44,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090273547] [2023-02-18 16:38:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:44,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:44,164 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:44,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100122239] [2023-02-18 16:38:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:44,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:44,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:44,167 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) [2023-02-18 16:38:44,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 16:38:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:44,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 16:38:44,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:44,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:44,258 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:44,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:44,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090273547] [2023-02-18 16:38:44,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:44,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100122239] [2023-02-18 16:38:44,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100122239] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:44,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:44,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 16:38:44,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895869282] [2023-02-18 16:38:44,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:44,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 16:38:44,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:44,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 16:38:44,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-18 16:38:44,261 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-02-18 16:38:44,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:44,336 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-02-18 16:38:44,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 16:38:44,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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 10 [2023-02-18 16:38:44,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:44,337 INFO L225 Difference]: With dead ends: 37 [2023-02-18 16:38:44,338 INFO L226 Difference]: Without dead ends: 35 [2023-02-18 16:38:44,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:38:44,339 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:44,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 93 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-18 16:38:44,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-18 16:38:44,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-18 16:38:44,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-02-18 16:38:44,362 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2023-02-18 16:38:44,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:44,362 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-02-18 16:38:44,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 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) [2023-02-18 16:38:44,363 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-02-18 16:38:44,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-18 16:38:44,363 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:44,363 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:44,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 16:38:44,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:44,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:44,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2023-02-18 16:38:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:44,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156540032] [2023-02-18 16:38:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:44,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:44,577 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:44,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [855620262] [2023-02-18 16:38:44,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:44,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:44,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:44,580 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) [2023-02-18 16:38:44,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 16:38:44,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:44,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 16:38:44,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:44,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 16:38:44,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:44,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:44,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156540032] [2023-02-18 16:38:44,683 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:44,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855620262] [2023-02-18 16:38:44,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855620262] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 16:38:44,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:38:44,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-18 16:38:44,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203759777] [2023-02-18 16:38:44,683 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-18 16:38:44,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 16:38:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:44,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 16:38:44,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=67, Unknown=1, NotChecked=0, Total=90 [2023-02-18 16:38:44,685 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 16:38:44,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:44,777 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-02-18 16:38:44,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 16:38:44,778 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-02-18 16:38:44,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:44,779 INFO L225 Difference]: With dead ends: 50 [2023-02-18 16:38:44,779 INFO L226 Difference]: Without dead ends: 47 [2023-02-18 16:38:44,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=96, Unknown=1, NotChecked=0, Total=132 [2023-02-18 16:38:44,780 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 17 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:44,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 88 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:44,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-18 16:38:44,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-18 16:38:44,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-18 16:38:44,809 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2023-02-18 16:38:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:44,809 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-18 16:38:44,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-18 16:38:44,812 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-18 16:38:44,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-18 16:38:44,813 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:44,814 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:44,821 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:45,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:45,021 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:45,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:45,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2023-02-18 16:38:45,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:45,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707003542] [2023-02-18 16:38:45,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:45,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:45,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:45,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653985427] [2023-02-18 16:38:45,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:45,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:45,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:45,038 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:45,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 16:38:45,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:45,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-18 16:38:45,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:45,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 16:38:45,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:45,156 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 16:38:45,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707003542] [2023-02-18 16:38:45,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:45,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653985427] [2023-02-18 16:38:45,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653985427] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:38:45,159 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:38:45,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-18 16:38:45,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749662847] [2023-02-18 16:38:45,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:45,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 16:38:45,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:45,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 16:38:45,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-18 16:38:45,161 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:45,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:45,220 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2023-02-18 16:38:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:38:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2023-02-18 16:38:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:45,224 INFO L225 Difference]: With dead ends: 52 [2023-02-18 16:38:45,224 INFO L226 Difference]: Without dead ends: 50 [2023-02-18 16:38:45,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:38:45,228 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:45,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 64 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:45,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-18 16:38:45,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-18 16:38:45,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-02-18 16:38:45,246 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2023-02-18 16:38:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:45,247 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-02-18 16:38:45,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-02-18 16:38:45,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-18 16:38:45,248 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:45,248 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:45,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:45,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:45,457 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:45,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:45,458 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2023-02-18 16:38:45,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:45,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328723147] [2023-02-18 16:38:45,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:45,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:45,466 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:45,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [150789063] [2023-02-18 16:38:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:45,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:45,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:45,474 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:45,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 16:38:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:45,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-18 16:38:45,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:45,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-18 16:38:45,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:45,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:45,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328723147] [2023-02-18 16:38:45,529 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:45,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150789063] [2023-02-18 16:38:45,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150789063] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:45,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:45,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 16:38:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546586501] [2023-02-18 16:38:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:45,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-18 16:38:45,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:45,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-18 16:38:45,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 16:38:45,531 INFO L87 Difference]: Start difference. First operand 50 states and 64 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:45,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:45,552 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-18 16:38:45,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 16:38:45,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-02-18 16:38:45,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:45,553 INFO L225 Difference]: With dead ends: 81 [2023-02-18 16:38:45,553 INFO L226 Difference]: Without dead ends: 56 [2023-02-18 16:38:45,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-18 16:38:45,554 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:45,554 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 96 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 16:38:45,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-18 16:38:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-18 16:38:45,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 38 states have internal predecessors, (44), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:45,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-18 16:38:45,561 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2023-02-18 16:38:45,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:45,561 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-18 16:38:45,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-18 16:38:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-18 16:38:45,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 16:38:45,562 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:45,562 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:45,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:45,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:45,769 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:45,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:45,769 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2023-02-18 16:38:45,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:45,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148649203] [2023-02-18 16:38:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:45,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:45,783 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:45,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2017561072] [2023-02-18 16:38:45,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:45,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:45,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:45,785 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:45,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 16:38:45,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:45,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-18 16:38:45,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:45,849 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-18 16:38:45,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 16:38:45,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:45,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148649203] [2023-02-18 16:38:45,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:45,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017561072] [2023-02-18 16:38:45,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017561072] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 16:38:45,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 16:38:45,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-18 16:38:45,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485850975] [2023-02-18 16:38:45,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:45,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 16:38:45,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:45,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 16:38:45,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-18 16:38:45,851 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 16:38:45,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:45,920 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-18 16:38:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-18 16:38:45,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2023-02-18 16:38:45,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:45,922 INFO L225 Difference]: With dead ends: 62 [2023-02-18 16:38:45,922 INFO L226 Difference]: Without dead ends: 60 [2023-02-18 16:38:45,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:38:45,923 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:45,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 90 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:45,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-18 16:38:45,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-18 16:38:45,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.175) internal successors, (47), 41 states have internal predecessors, (47), 13 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:45,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-02-18 16:38:45,930 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-02-18 16:38:45,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:45,930 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-02-18 16:38:45,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-18 16:38:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-02-18 16:38:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-18 16:38:45,931 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:45,931 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:45,969 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:46,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:46,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:46,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:46,137 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2023-02-18 16:38:46,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:46,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059959368] [2023-02-18 16:38:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:46,147 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:46,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [157360429] [2023-02-18 16:38:46,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:46,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:46,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:46,148 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:46,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 16:38:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:46,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-18 16:38:46,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 16:38:46,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:46,331 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-18 16:38:46,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:46,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059959368] [2023-02-18 16:38:46,331 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:46,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157360429] [2023-02-18 16:38:46,331 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157360429] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:38:46,331 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:38:46,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-18 16:38:46,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225986127] [2023-02-18 16:38:46,332 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:38:46,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-18 16:38:46,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:46,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-18 16:38:46,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-18 16:38:46,333 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 16:38:46,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:46,493 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-18 16:38:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-18 16:38:46,494 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2023-02-18 16:38:46,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:46,495 INFO L225 Difference]: With dead ends: 79 [2023-02-18 16:38:46,495 INFO L226 Difference]: Without dead ends: 77 [2023-02-18 16:38:46,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2023-02-18 16:38:46,496 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 31 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:46,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 118 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:46,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-18 16:38:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2023-02-18 16:38:46,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 13 states have call successors, (13), 7 states have call predecessors, (13), 7 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-18 16:38:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-02-18 16:38:46,503 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2023-02-18 16:38:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:46,503 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-02-18 16:38:46,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.4) internal successors, (24), 9 states have internal predecessors, (24), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 5 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-18 16:38:46,504 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-02-18 16:38:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-18 16:38:46,504 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:46,504 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:46,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:46,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-18 16:38:46,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:46,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:46,706 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2023-02-18 16:38:46,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:46,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470646133] [2023-02-18 16:38:46,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:46,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:46,711 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:46,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151488662] [2023-02-18 16:38:46,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:46,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:46,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:46,717 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:46,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 16:38:46,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:46,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-18 16:38:46,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-18 16:38:46,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:46,792 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-18 16:38:46,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:46,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470646133] [2023-02-18 16:38:46,793 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:46,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151488662] [2023-02-18 16:38:46,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151488662] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 16:38:46,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-18 16:38:46,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2023-02-18 16:38:46,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127295864] [2023-02-18 16:38:46,794 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-18 16:38:46,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-18 16:38:46,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-18 16:38:46,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-02-18 16:38:46,795 INFO L87 Difference]: Start difference. First operand 64 states and 75 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 16:38:46,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:46,949 INFO L93 Difference]: Finished difference Result 225 states and 264 transitions. [2023-02-18 16:38:46,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-18 16:38:46,950 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2023-02-18 16:38:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:46,953 INFO L225 Difference]: With dead ends: 225 [2023-02-18 16:38:46,953 INFO L226 Difference]: Without dead ends: 218 [2023-02-18 16:38:46,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2023-02-18 16:38:46,955 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 84 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:46,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 269 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:46,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2023-02-18 16:38:46,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 202. [2023-02-18 16:38:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 132 states have (on average 1.1818181818181819) internal successors, (156), 136 states have internal predecessors, (156), 44 states have call successors, (44), 25 states have call predecessors, (44), 25 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-02-18 16:38:46,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 240 transitions. [2023-02-18 16:38:46,980 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 240 transitions. Word has length 42 [2023-02-18 16:38:46,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:46,980 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 240 transitions. [2023-02-18 16:38:46,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2023-02-18 16:38:46,980 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 240 transitions. [2023-02-18 16:38:46,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-02-18 16:38:46,981 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 16:38:46,981 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:46,988 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-02-18 16:38:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:47,186 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-18 16:38:47,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 16:38:47,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2023-02-18 16:38:47,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 16:38:47,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337812009] [2023-02-18 16:38:47,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:47,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 16:38:47,193 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-18 16:38:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [387662571] [2023-02-18 16:38:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 16:38:47,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 16:38:47,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 16:38:47,194 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-18 16:38:47,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 16:38:47,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 16:38:47,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-18 16:38:47,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 16:38:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 16:38:47,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 16:38:47,379 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-02-18 16:38:47,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 16:38:47,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337812009] [2023-02-18 16:38:47,379 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-18 16:38:47,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [387662571] [2023-02-18 16:38:47,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [387662571] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-18 16:38:47,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 16:38:47,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-02-18 16:38:47,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688935551] [2023-02-18 16:38:47,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 16:38:47,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 16:38:47,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 16:38:47,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 16:38:47,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-18 16:38:47,381 INFO L87 Difference]: Start difference. First operand 202 states and 240 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 16:38:47,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 16:38:47,537 INFO L93 Difference]: Finished difference Result 202 states and 240 transitions. [2023-02-18 16:38:47,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 16:38:47,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 47 [2023-02-18 16:38:47,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 16:38:47,538 INFO L225 Difference]: With dead ends: 202 [2023-02-18 16:38:47,538 INFO L226 Difference]: Without dead ends: 0 [2023-02-18 16:38:47,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-02-18 16:38:47,539 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 29 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 16:38:47,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 55 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 16:38:47,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-18 16:38:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-18 16:38:47,540 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) [2023-02-18 16:38:47,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-18 16:38:47,540 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2023-02-18 16:38:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 16:38:47,540 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-18 16:38:47,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-18 16:38:47,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-18 16:38:47,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-18 16:38:47,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-18 16:38:47,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 16:38:47,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-18 16:38:47,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-18 16:38:47,769 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse9 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse11 (or (and .cse9 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse9) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse13 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (+ ~counter~0 1))) (let ((.cse2 (< .cse5 20)) (.cse0 (or (and .cse8 .cse9 .cse11 .cse13) (and .cse8 .cse9 .cse10 .cse11 .cse13))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (let ((.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse7 .cse8 .cse9 .cse11 .cse12 .cse13)))) (.cse6 (< ~counter~0 20)) (.cse3 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse1 .cse4 (< .cse5 19) .cse3) (and .cse1 .cse4 (<= (+ ~counter~0 (- 1)) 1) .cse3) (and .cse1 .cse4 .cse3) (and .cse0 .cse1 .cse6 .cse3) (and .cse1 .cse4 .cse6 .cse3))))) [2023-02-18 16:38:47,769 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse1 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse5 (+ ~counter~0 1)) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse2 (or (and .cse1 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse3 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse4 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 (<= (+ ~counter~0 (- 1)) 1) .cse3 .cse4) (and .cse0 .cse1 .cse2 (< ~counter~0 20) .cse3 .cse4) (and .cse0 .cse1 .cse2 (< .cse5 20) .cse3 .cse4) (and .cse0 .cse1 .cse2 (< .cse5 19) .cse3 .cse4) (and .cse0 .cse1 .cse2 .cse3 .cse4) (and (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (<= ~counter~0 0) (= |ULTIMATE.start_main_~b~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse3 .cse4)))) [2023-02-18 16:38:47,770 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse3 (or (and .cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse2) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse4 (+ ~counter~0 1)) (.cse0 (or (and (= |ULTIMATE.start_main_~a~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse2 .cse3))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse6 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (and .cse0 .cse1 .cse2 .cse3 (< .cse4 19) .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (< .cse4 20) .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 20) .cse5 .cse6))))) [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse12 (+ ~counter~0 1)) (.cse13 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse6 (< ~counter~0 20)) (.cse0 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse7 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse1 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse9 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse3 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse4 (or (and .cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse2) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse5 (>= |ULTIMATE.start_main_~r~0#1| (* 2 .cse13))) (.cse11 (< .cse12 20)) (.cse8 (= |ULTIMATE.start_main_~b~0#1| .cse13)) (.cse10 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse7 .cse8)) .cse9 .cse10) (and .cse0 .cse1 .cse9 .cse2 .cse3 .cse4 .cse5 .cse11 .cse7 .cse8 .cse10) (and .cse9 (or (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse8) (and .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse8)) .cse10) (and .cse0 .cse1 .cse9 .cse2 .cse3 .cse4 .cse5 (< .cse12 19) .cse7 .cse8 .cse10) (and .cse0 .cse1 .cse9 .cse2 .cse3 .cse4 .cse5 (<= (+ ~counter~0 (- 1)) 1) .cse7 .cse8 .cse10) (and .cse1 .cse9 .cse2 .cse3 .cse4 .cse5 .cse11 .cse8 .cse10)))) [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-02-18 16:38:47,770 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse6 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse7 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse5 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse8 (or (and .cse6 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse6) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse11 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)))) (let ((.cse14 (and .cse5 .cse6 .cse8 .cse11)) (.cse15 (and .cse5 .cse6 .cse7 .cse8 .cse11)) (.cse16 (+ ~counter~0 1))) (let ((.cse9 (< .cse16 19)) (.cse12 (+ ~counter~0 (- 1))) (.cse0 (or .cse14 .cse15)) (.cse2 (< .cse16 20)) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse13 (< ~counter~0 20)) (.cse10 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse4 .cse5 .cse1 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse3) (and .cse0 .cse1 .cse9 .cse3) (and .cse4 .cse5 .cse1 .cse6 .cse7 .cse8 (<= .cse12 1) .cse10 .cse11 .cse3) (and .cse4 .cse5 .cse1 .cse6 .cse8 .cse10 .cse11 (<= .cse12 0) .cse3) (and .cse1 (or (and .cse0 .cse13) .cse14 .cse15) .cse3) (and .cse4 .cse5 .cse1 .cse6 .cse7 .cse8 .cse2 .cse10 .cse11 .cse3) (and .cse1 (or (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse10 .cse11) (and .cse4 .cse5 .cse6 .cse7 .cse8 .cse13 .cse10 .cse11)) .cse3)))))) [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse3 (+ ~counter~0 1)) (.cse0 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse2 (or (and .cse1 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse4 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 (< .cse3 20) .cse4 .cse5) (and .cse0 .cse1 .cse2 (< ~counter~0 20) .cse4 .cse5) (and .cse0 .cse1 .cse2 (< .cse3 19) .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse4 .cse5) (and (= |ULTIMATE.start_main_~a~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 .cse1 .cse2 (= |ULTIMATE.start_main_~b~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse4 (<= (+ ~counter~0 (- 1)) 0) .cse5)))) [2023-02-18 16:38:47,771 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse2 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse3 (or (and .cse2 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse2) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0))))) (let ((.cse4 (+ ~counter~0 1)) (.cse0 (or (and (= |ULTIMATE.start_main_~a~0#1| 0) .cse2 .cse3 (= |ULTIMATE.start_main_~b~0#1| 0)) (and .cse2 .cse3))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse5 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse6 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3 (< .cse4 19) .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (< .cse4 20) .cse5 .cse6) (and .cse0 .cse1 .cse2 .cse3 (< ~counter~0 20) .cse5 .cse6) (and .cse0 (= |ULTIMATE.start_main_~q~0#1| 0) .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse5 (<= (+ ~counter~0 (- 1)) 0) .cse6))))) [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse9 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse11 (or (and .cse9 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse9) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse13 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (+ ~counter~0 1))) (let ((.cse2 (< .cse5 20)) (.cse0 (or (and .cse8 .cse9 .cse11 .cse13) (and .cse8 .cse9 .cse10 .cse11 .cse13))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (let ((.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse7 .cse8 .cse9 .cse11 .cse12 .cse13)))) (.cse6 (< ~counter~0 20)) (.cse3 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse1 .cse4 (< .cse5 19) .cse3) (and .cse1 .cse4 (<= (+ ~counter~0 (- 1)) 1) .cse3) (and .cse1 .cse4 .cse3) (and .cse0 .cse1 .cse6 .cse3) (and .cse1 .cse4 .cse6 .cse3))))) [2023-02-18 16:38:47,771 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse9 (>= |ULTIMATE.start_main_~y~0#1| 1))) (let ((.cse8 (<= 1 |ULTIMATE.start_main_~r~0#1|)) (.cse10 (>= |ULTIMATE.start_main_~r~0#1| 0)) (.cse11 (or (and .cse9 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (and (not .cse9) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)))) (.cse13 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (.cse5 (+ ~counter~0 1))) (let ((.cse2 (< .cse5 20)) (.cse0 (or (and .cse8 .cse9 .cse11 .cse13) (and .cse8 .cse9 .cse10 .cse11 .cse13))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (+ (* (+ |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~a~0#1|) |ULTIMATE.start_main_~y~0#1|) (+ |ULTIMATE.start_main_~r~0#1| (- |ULTIMATE.start_main_~b~0#1|))))) (.cse4 (let ((.cse7 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse12 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13) (and .cse7 .cse8 .cse9 .cse11 .cse12 .cse13)))) (.cse6 (< ~counter~0 20)) (.cse3 (= |ULTIMATE.start_main_~x~0#1| (+ (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1|)))) (or (and .cse0 .cse1 .cse2 .cse3) (and .cse0 .cse1 .cse3) (and .cse1 .cse4 .cse2 .cse3) (and .cse1 .cse4 (< .cse5 19) .cse3) (and .cse1 .cse4 (<= (+ ~counter~0 (- 1)) 1) .cse3) (and .cse1 .cse4 .cse3) (and .cse0 .cse1 .cse6 .cse3) (and .cse1 .cse4 .cse6 .cse3))))) [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-18 16:38:47,771 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-18 16:38:47,772 INFO L895 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: (let ((.cse12 (+ ~counter~0 (- 1))) (.cse15 (+ ~counter~0 1))) (let ((.cse1 (< .cse15 19)) (.cse13 (<= .cse12 1)) (.cse2 (= 0 |__VERIFIER_assert_#in~cond|)) (.cse9 (< .cse15 20)) (.cse4 (= |__VERIFIER_assert_#in~cond| 1)) (.cse8 (< ~counter~0 20))) (let ((.cse5 (and .cse4 .cse8)) (.cse7 (not .cse8)) (.cse10 (not .cse9)) (.cse0 (not .cse2)) (.cse14 (not .cse13)) (.cse6 (not .cse4)) (.cse3 (not .cse1))) (and (or (and .cse0 .cse1) .cse2 .cse3) (or .cse4 .cse5 (and .cse6 (or .cse7 .cse6))) (or .cse2 .cse7 (and .cse0 .cse8)) (or (and .cse4 .cse9) .cse6 .cse10) (or (and .cse0 .cse9) .cse2 .cse10) (let ((.cse11 (<= .cse12 0))) (or (and .cse4 .cse0 .cse11) .cse2 .cse6 (not .cse11))) (or .cse7 .cse6 .cse5) (or .cse2 .cse6 (and .cse4 .cse0 .cse1) .cse3) (or (and .cse4 .cse0 .cse8) .cse2 .cse7 .cse6) (or .cse2 .cse6 (and .cse4 .cse0 .cse13) .cse14) (or .cse2 .cse6 .cse10 (and .cse4 .cse0 .cse9)) (or .cse6 (and .cse4 .cse13) .cse14) (or .cse6 (and .cse4 .cse1) .cse3))))) [2023-02-18 16:38:47,772 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-18 16:38:47,774 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 16:38:47,775 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-18 16:38:47,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.02 04:38:47 BoogieIcfgContainer [2023-02-18 16:38:47,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-18 16:38:47,810 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-18 16:38:47,810 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-18 16:38:47,810 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-18 16:38:47,810 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 04:38:43" (3/4) ... [2023-02-18 16:38:47,812 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-18 16:38:47,817 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-18 16:38:47,819 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-18 16:38:47,819 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-18 16:38:47,820 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-18 16:38:47,820 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-18 16:38:47,842 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-18 16:38:47,842 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-18 16:38:47,842 INFO L158 Benchmark]: Toolchain (without parser) took 5037.75ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 97.2MB in the beginning and 133.6MB in the end (delta: -36.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:38:47,842 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:38:47,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.27ms. Allocated memory is still 148.9MB. Free memory was 96.8MB in the beginning and 86.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-18 16:38:47,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.17ms. Allocated memory is still 148.9MB. Free memory was 86.5MB in the beginning and 84.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:38:47,843 INFO L158 Benchmark]: Boogie Preprocessor took 15.07ms. Allocated memory is still 148.9MB. Free memory was 84.8MB in the beginning and 83.9MB in the end (delta: 880.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-18 16:38:47,843 INFO L158 Benchmark]: RCFGBuilder took 283.48ms. Allocated memory is still 148.9MB. Free memory was 83.5MB in the beginning and 112.5MB in the end (delta: -28.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2023-02-18 16:38:47,844 INFO L158 Benchmark]: TraceAbstraction took 4535.67ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 111.8MB in the beginning and 136.7MB in the end (delta: -24.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. [2023-02-18 16:38:47,844 INFO L158 Benchmark]: Witness Printer took 32.35ms. Allocated memory is still 180.4MB. Free memory was 136.7MB in the beginning and 133.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-18 16:38:47,845 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 109.1MB. Free memory is still 83.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.27ms. Allocated memory is still 148.9MB. Free memory was 96.8MB in the beginning and 86.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.17ms. Allocated memory is still 148.9MB. Free memory was 86.5MB in the beginning and 84.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.07ms. Allocated memory is still 148.9MB. Free memory was 84.8MB in the beginning and 83.9MB in the end (delta: 880.1kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 283.48ms. Allocated memory is still 148.9MB. Free memory was 83.5MB in the beginning and 112.5MB in the end (delta: -28.9MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4535.67ms. Allocated memory was 148.9MB in the beginning and 180.4MB in the end (delta: 31.5MB). Free memory was 111.8MB in the beginning and 136.7MB in the end (delta: -24.9MB). Peak memory consumption was 6.8MB. Max. memory is 16.1GB. * Witness Printer took 32.35ms. Allocated memory is still 180.4MB. Free memory was 136.7MB in the beginning and 133.6MB in the end (delta: 3.1MB). 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: 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, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 246 mSDsluCounter, 1000 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 694 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 755 IncrementalHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 306 mSDtfsCounter, 755 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 330 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=202occurred in iteration=9, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 33 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 71 PreInvPairs, 131 NumberOfFragments, 5065 HoareAnnotationTreeSize, 71 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 391 ConstructedInterpolants, 0 QuantifiedInterpolants, 1505 SizeOfPredicates, 38 NumberOfNonLiveVariables, 891 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 14 InterpolantComputations, 7 PerfectInterpolantSequences, 372/416 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: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((((((((1 <= r && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) || ((((1 <= r && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) && x == (q + a) * y + (r + -b)) && counter + 1 < 20) && x == q * y + r) || (((((((((q == 0 && 1 <= r) && x == (q + a) * y + (r + -b)) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + 1 < 19) && r == x) && b == y * a) && x == q * y + r)) || (((((((1 <= r && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) || ((((1 <= r && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) && x == (q + a) * y + (r + -b)) && counter + 1 < 19) && x == q * y + r)) || (((((((((q == 0 && 1 <= r) && x == (q + a) * y + (r + -b)) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + -1 <= 1) && r == x) && b == y * a) && x == q * y + r)) || ((((((((q == 0 && 1 <= r) && x == (q + a) * y + (r + -b)) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && r == x) && b == y * a) && counter + -1 <= 0) && x == q * y + r)) || ((x == (q + a) * y + (r + -b) && (((((((1 <= r && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) || ((((1 <= r && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) && counter < 20) || (((1 <= r && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a)) || ((((1 <= r && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a))) && x == q * y + r)) || (((((((((q == 0 && 1 <= r) && x == (q + a) * y + (r + -b)) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + 1 < 20) && r == x) && b == y * a) && x == q * y + r)) || ((x == (q + a) * y + (r + -b) && (((((((q == 0 && 1 <= r) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && r == x) && b == y * a) || (((((((q == 0 && 1 <= r) && y >= 1) && r >= 0) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter < 20) && r == x) && b == y * a))) && x == q * y + r) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((((((x == (q + a) * y + (r + -b) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + -1 <= 1) && b == y * a) && x == q * y + r) || (((((x == (q + a) * y + (r + -b) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter < 20) && b == y * a) && x == q * y + r)) || (((((x == (q + a) * y + (r + -b) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + 1 < 20) && b == y * a) && x == q * y + r)) || (((((x == (q + a) * y + (r + -b) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter + 1 < 19) && b == y * a) && x == q * y + r)) || ((((x == (q + a) * y + (r + -b) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && b == y * a) && x == q * y + r)) || (((((((((a == 0 && q == 0) && x == (q + a) * y + (r + -b)) && y >= 1) && ((y >= 1 && cond == 1) || (!(y >= 1) && cond == 0))) && counter <= 0) && b == 0) && r == x) && b == y * a) && x == q * y + r) RESULT: Ultimate proved your program to be correct! [2023-02-18 16:38:47,870 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