./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 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_unwindbound2.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 969ea7ac1a6cea553b276c54292ec8e81265daf8dd23428f445a60f39343440e --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 20:28:15,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 20:28:15,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 20:28:15,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 20:28:15,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 20:28:15,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 20:28:15,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 20:28:15,635 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 20:28:15,636 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 20:28:15,637 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 20:28:15,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 20:28:15,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 20:28:15,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 20:28:15,643 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 20:28:15,645 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 20:28:15,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 20:28:15,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 20:28:15,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 20:28:15,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 20:28:15,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 20:28:15,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 20:28:15,656 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 20:28:15,657 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 20:28:15,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 20:28:15,660 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 20:28:15,662 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 20:28:15,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 20:28:15,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 20:28:15,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 20:28:15,664 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 20:28:15,665 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 20:28:15,665 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 20:28:15,666 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 20:28:15,667 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 20:28:15,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 20:28:15,668 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 20:28:15,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 20:28:15,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 20:28:15,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 20:28:15,671 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 20:28:15,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 20:28:15,673 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 20:28:15,691 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 20:28:15,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 20:28:15,691 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 20:28:15,692 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 20:28:15,692 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 20:28:15,692 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 20:28:15,693 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 20:28:15,693 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 20:28:15,693 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 20:28:15,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 20:28:15,694 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 20:28:15,694 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 20:28:15,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 20:28:15,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 20:28:15,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 20:28:15,695 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 20:28:15,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 20:28:15,695 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 20:28:15,695 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 20:28:15,695 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 20:28:15,695 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 20:28:15,696 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 20:28:15,696 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 20:28:15,696 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 20:28:15,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:28:15,696 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 20:28:15,696 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 20:28:15,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 20:28:15,697 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 20:28:15,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 20:28:15,697 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 20:28:15,697 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 20:28:15,698 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 20:28:15,698 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 20:28:15,698 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 20:28:15,698 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 969ea7ac1a6cea553b276c54292ec8e81265daf8dd23428f445a60f39343440e [2023-02-15 20:28:15,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 20:28:15,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 20:28:15,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 20:28:15,884 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 20:28:15,884 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 20:28:15,885 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2023-02-15 20:28:16,767 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 20:28:16,940 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 20:28:16,940 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound2.c [2023-02-15 20:28:16,945 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe24bdbd/cd66315f91224f18818399b9f89ba6c6/FLAGf52e9b564 [2023-02-15 20:28:16,957 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfe24bdbd/cd66315f91224f18818399b9f89ba6c6 [2023-02-15 20:28:16,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 20:28:16,960 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 20:28:16,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 20:28:16,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 20:28:16,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 20:28:16,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:28:16" (1/1) ... [2023-02-15 20:28:16,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@292433b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:16, skipping insertion in model container [2023-02-15 20:28:16,967 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 08:28:16" (1/1) ... [2023-02-15 20:28:16,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 20:28:16,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 20:28:17,093 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_unwindbound2.c[576,589] [2023-02-15 20:28:17,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:28:17,111 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 20:28:17,117 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_unwindbound2.c[576,589] [2023-02-15 20:28:17,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 20:28:17,129 INFO L208 MainTranslator]: Completed translation [2023-02-15 20:28:17,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17 WrapperNode [2023-02-15 20:28:17,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 20:28:17,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 20:28:17,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 20:28:17,131 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 20:28:17,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,138 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,148 INFO L138 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2023-02-15 20:28:17,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 20:28:17,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 20:28:17,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 20:28:17,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 20:28:17,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,154 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,160 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 20:28:17,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 20:28:17,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 20:28:17,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 20:28:17,164 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (1/1) ... [2023-02-15 20:28:17,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 20:28:17,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:17,182 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) [2023-02-15 20:28:17,201 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 [2023-02-15 20:28:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 20:28:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 20:28:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 20:28:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 20:28:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 20:28:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 20:28:17,251 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 20:28:17,252 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 20:28:17,339 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 20:28:17,356 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 20:28:17,356 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-15 20:28:17,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:28:17 BoogieIcfgContainer [2023-02-15 20:28:17,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 20:28:17,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 20:28:17,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 20:28:17,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 20:28:17,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 08:28:16" (1/3) ... [2023-02-15 20:28:17,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da4fdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:28:17, skipping insertion in model container [2023-02-15 20:28:17,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 08:28:17" (2/3) ... [2023-02-15 20:28:17,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7da4fdef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 08:28:17, skipping insertion in model container [2023-02-15 20:28:17,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:28:17" (3/3) ... [2023-02-15 20:28:17,363 INFO L112 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound2.c [2023-02-15 20:28:17,387 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 20:28:17,388 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 20:28:17,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 20:28:17,434 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;@22e0035e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 20:28:17,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 20:28:17,437 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) [2023-02-15 20:28:17,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 20:28:17,442 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:17,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:28:17,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2023-02-15 20:28:17,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:17,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869284358] [2023-02-15 20:28:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:17,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:17,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:17,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869284358] [2023-02-15 20:28:17,549 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 20:28:17,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435840576] [2023-02-15 20:28:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:17,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:17,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:17,553 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) [2023-02-15 20:28:17,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 20:28:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:17,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 20:28:17,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:17,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:28:17,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:28:17,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435840576] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:28:17,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:28:17,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 20:28:17,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468251708] [2023-02-15 20:28:17,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:17,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 20:28:17,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 20:28:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 20:28:17,659 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) [2023-02-15 20:28:17,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:17,678 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2023-02-15 20:28:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 20:28:17,679 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 [2023-02-15 20:28:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:17,684 INFO L225 Difference]: With dead ends: 55 [2023-02-15 20:28:17,684 INFO L226 Difference]: Without dead ends: 25 [2023-02-15 20:28:17,687 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 [2023-02-15 20:28:17,690 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 [2023-02-15 20:28:17,691 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] [2023-02-15 20:28:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2023-02-15 20:28:17,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2023-02-15 20:28:17,716 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) [2023-02-15 20:28:17,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2023-02-15 20:28:17,719 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2023-02-15 20:28:17,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:17,720 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2023-02-15 20:28:17,721 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) [2023-02-15 20:28:17,721 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2023-02-15 20:28:17,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 20:28:17,722 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:17,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:28:17,728 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-15 20:28:17,927 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 [2023-02-15 20:28:17,928 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:17,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:17,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2023-02-15 20:28:17,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:17,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598668132] [2023-02-15 20:28:17,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:17,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:17,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:17,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598668132] [2023-02-15 20:28:17,959 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 20:28:17,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401416670] [2023-02-15 20:28:17,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:17,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:17,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:17,960 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) [2023-02-15 20:28:17,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 20:28:18,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:18,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-15 20:28:18,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:18,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:28:18,045 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:28:18,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401416670] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:28:18,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:28:18,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-15 20:28:18,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684981428] [2023-02-15 20:28:18,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:18,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-15 20:28:18,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:18,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-15 20:28:18,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-15 20:28:18,052 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) [2023-02-15 20:28:18,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:18,068 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2023-02-15 20:28:18,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-15 20:28:18,069 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 [2023-02-15 20:28:18,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:18,070 INFO L225 Difference]: With dead ends: 34 [2023-02-15 20:28:18,071 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 20:28:18,071 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 [2023-02-15 20:28:18,072 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 [2023-02-15 20:28:18,073 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] [2023-02-15 20:28:18,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 20:28:18,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-15 20:28:18,077 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) [2023-02-15 20:28:18,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2023-02-15 20:28:18,078 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2023-02-15 20:28:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:18,078 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2023-02-15 20:28:18,079 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) [2023-02-15 20:28:18,079 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2023-02-15 20:28:18,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-15 20:28:18,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:18,079 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:28:18,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:18,285 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 [2023-02-15 20:28:18,286 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:18,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2023-02-15 20:28:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:18,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928000015] [2023-02-15 20:28:18,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:18,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:18,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:28:18,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1889053980] [2023-02-15 20:28:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:18,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:18,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:18,309 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) [2023-02-15 20:28:18,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 20:28:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:18,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 20:28:18,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:28:18,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:28:18,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:18,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928000015] [2023-02-15 20:28:18,430 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:28:18,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889053980] [2023-02-15 20:28:18,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1889053980] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:28:18,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:28:18,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 20:28:18,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538120475] [2023-02-15 20:28:18,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:18,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:28:18,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:18,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:28:18,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-02-15 20:28:18,436 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) [2023-02-15 20:28:18,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:18,579 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2023-02-15 20:28:18,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 20:28:18,580 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 [2023-02-15 20:28:18,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:18,580 INFO L225 Difference]: With dead ends: 37 [2023-02-15 20:28:18,581 INFO L226 Difference]: Without dead ends: 35 [2023-02-15 20:28:18,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-02-15 20:28:18,583 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 38 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2023-02-15 20:28:18,583 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] [2023-02-15 20:28:18,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-02-15 20:28:18,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2023-02-15 20:28:18,590 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) [2023-02-15 20:28:18,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2023-02-15 20:28:18,591 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2023-02-15 20:28:18,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:18,591 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2023-02-15 20:28:18,591 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) [2023-02-15 20:28:18,591 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2023-02-15 20:28:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-15 20:28:18,591 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:18,592 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:28:18,600 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:18,796 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 [2023-02-15 20:28:18,796 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:18,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:18,797 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2023-02-15 20:28:18,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:18,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055815391] [2023-02-15 20:28:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:18,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:18,804 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:28:18,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889439531] [2023-02-15 20:28:18,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:18,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:18,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:18,808 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) [2023-02-15 20:28:18,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 20:28:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:18,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 20:28:18,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:18,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:28:18,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:28:18,975 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 20:28:18,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:18,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055815391] [2023-02-15 20:28:18,976 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:28:18,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889439531] [2023-02-15 20:28:18,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889439531] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:28:18,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:28:18,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 9 [2023-02-15 20:28:18,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839992932] [2023-02-15 20:28:18,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:18,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 20:28:18,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:18,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 20:28:18,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:28:18,978 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 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) [2023-02-15 20:28:19,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:19,040 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2023-02-15 20:28:19,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:28:19,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 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 [2023-02-15 20:28:19,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:19,043 INFO L225 Difference]: With dead ends: 50 [2023-02-15 20:28:19,043 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 20:28:19,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-15 20:28:19,044 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 20:28:19,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 127 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 20:28:19,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 20:28:19,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-15 20:28:19,050 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) [2023-02-15 20:28:19,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2023-02-15 20:28:19,051 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2023-02-15 20:28:19,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:19,051 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2023-02-15 20:28:19,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 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) [2023-02-15 20:28:19,052 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2023-02-15 20:28:19,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-15 20:28:19,052 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:19,052 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:28:19,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:19,259 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 [2023-02-15 20:28:19,259 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:19,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:19,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2023-02-15 20:28:19,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:19,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261835774] [2023-02-15 20:28:19,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:19,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:19,268 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:28:19,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146956236] [2023-02-15 20:28:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:19,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:19,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:19,269 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) [2023-02-15 20:28:19,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 20:28:19,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:19,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 20:28:19,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:19,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 20:28:19,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:28:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:28:19,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:19,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261835774] [2023-02-15 20:28:19,402 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:28:19,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146956236] [2023-02-15 20:28:19,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146956236] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:28:19,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:28:19,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-15 20:28:19,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818625783] [2023-02-15 20:28:19,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:19,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:28:19,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:19,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:28:19,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-15 20:28:19,405 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) [2023-02-15 20:28:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:19,452 INFO L93 Difference]: Finished difference Result 52 states and 66 transitions. [2023-02-15 20:28:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:28:19,452 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 [2023-02-15 20:28:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:19,455 INFO L225 Difference]: With dead ends: 52 [2023-02-15 20:28:19,455 INFO L226 Difference]: Without dead ends: 50 [2023-02-15 20:28:19,455 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 [2023-02-15 20:28:19,457 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 [2023-02-15 20:28:19,460 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] [2023-02-15 20:28:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-15 20:28:19,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-02-15 20:28:19,480 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) [2023-02-15 20:28:19,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 64 transitions. [2023-02-15 20:28:19,483 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 64 transitions. Word has length 23 [2023-02-15 20:28:19,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:19,483 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 64 transitions. [2023-02-15 20:28:19,483 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) [2023-02-15 20:28:19,484 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 64 transitions. [2023-02-15 20:28:19,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-15 20:28:19,485 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:19,485 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] [2023-02-15 20:28:19,491 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:19,689 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 [2023-02-15 20:28:19,689 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:19,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:19,690 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2023-02-15 20:28:19,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:19,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658964741] [2023-02-15 20:28:19,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:19,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:19,696 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:28:19,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313249981] [2023-02-15 20:28:19,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:19,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:19,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:19,698 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) [2023-02-15 20:28:19,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 20:28:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:19,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 20:28:19,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:19,767 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 20:28:19,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:28:19,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658964741] [2023-02-15 20:28:19,768 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:28:19,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313249981] [2023-02-15 20:28:19,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313249981] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:28:19,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:28:19,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-15 20:28:19,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174862127] [2023-02-15 20:28:19,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:19,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 20:28:19,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:19,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 20:28:19,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-15 20:28:19,769 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) [2023-02-15 20:28:19,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:19,793 INFO L93 Difference]: Finished difference Result 81 states and 103 transitions. [2023-02-15 20:28:19,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 20:28:19,794 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 [2023-02-15 20:28:19,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:19,796 INFO L225 Difference]: With dead ends: 81 [2023-02-15 20:28:19,796 INFO L226 Difference]: Without dead ends: 56 [2023-02-15 20:28:19,796 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 [2023-02-15 20:28:19,797 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 [2023-02-15 20:28:19,798 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] [2023-02-15 20:28:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-02-15 20:28:19,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2023-02-15 20:28:19,812 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) [2023-02-15 20:28:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2023-02-15 20:28:19,814 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 26 [2023-02-15 20:28:19,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:19,814 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2023-02-15 20:28:19,814 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) [2023-02-15 20:28:19,814 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2023-02-15 20:28:19,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-15 20:28:19,818 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:19,818 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] [2023-02-15 20:28:19,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:20,021 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 [2023-02-15 20:28:20,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:20,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2023-02-15 20:28:20,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:20,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876642339] [2023-02-15 20:28:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:20,029 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:28:20,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [262560117] [2023-02-15 20:28:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:20,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:20,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:20,030 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) [2023-02-15 20:28:20,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 20:28:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:20,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 20:28:20,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:20,104 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-15 20:28:20,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 20:28:20,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:20,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876642339] [2023-02-15 20:28:20,105 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:28:20,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262560117] [2023-02-15 20:28:20,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262560117] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 20:28:20,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 20:28:20,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 20:28:20,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866980379] [2023-02-15 20:28:20,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:20,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 20:28:20,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 20:28:20,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 20:28:20,106 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) [2023-02-15 20:28:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:20,196 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2023-02-15 20:28:20,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 20:28:20,197 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 [2023-02-15 20:28:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:20,197 INFO L225 Difference]: With dead ends: 62 [2023-02-15 20:28:20,197 INFO L226 Difference]: Without dead ends: 60 [2023-02-15 20:28:20,198 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 [2023-02-15 20:28:20,198 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 [2023-02-15 20:28:20,198 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] [2023-02-15 20:28:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-02-15 20:28:20,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2023-02-15 20:28:20,204 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) [2023-02-15 20:28:20,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2023-02-15 20:28:20,204 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 33 [2023-02-15 20:28:20,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:20,204 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2023-02-15 20:28:20,205 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) [2023-02-15 20:28:20,205 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2023-02-15 20:28:20,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-15 20:28:20,205 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:20,205 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] [2023-02-15 20:28:20,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:20,413 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 [2023-02-15 20:28:20,413 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:20,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2023-02-15 20:28:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:20,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102764321] [2023-02-15 20:28:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:20,420 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:28:20,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062699202] [2023-02-15 20:28:20,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:20,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:20,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:20,421 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) [2023-02-15 20:28:20,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 20:28:20,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:20,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-15 20:28:20,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 20:28:20,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:28:20,659 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-02-15 20:28:20,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:20,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102764321] [2023-02-15 20:28:20,660 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:28:20,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062699202] [2023-02-15 20:28:20,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062699202] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 20:28:20,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 20:28:20,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-15 20:28:20,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680641272] [2023-02-15 20:28:20,661 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 20:28:20,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-15 20:28:20,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:20,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-15 20:28:20,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-02-15 20:28:20,662 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) [2023-02-15 20:28:20,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:20,828 INFO L93 Difference]: Finished difference Result 79 states and 96 transitions. [2023-02-15 20:28:20,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 20:28:20,828 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 [2023-02-15 20:28:20,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:20,830 INFO L225 Difference]: With dead ends: 79 [2023-02-15 20:28:20,830 INFO L226 Difference]: Without dead ends: 77 [2023-02-15 20:28:20,830 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 [2023-02-15 20:28:20,830 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 43 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:28:20,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 139 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:28:20,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-02-15 20:28:20,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 64. [2023-02-15 20:28:20,836 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) [2023-02-15 20:28:20,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 75 transitions. [2023-02-15 20:28:20,837 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 75 transitions. Word has length 39 [2023-02-15 20:28:20,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:20,837 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 75 transitions. [2023-02-15 20:28:20,837 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) [2023-02-15 20:28:20,837 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 75 transitions. [2023-02-15 20:28:20,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-02-15 20:28:20,837 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 20:28:20,838 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] [2023-02-15 20:28:20,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:21,046 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 [2023-02-15 20:28:21,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 20:28:21,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 20:28:21,047 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2023-02-15 20:28:21,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 20:28:21,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493475356] [2023-02-15 20:28:21,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:21,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 20:28:21,053 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 20:28:21,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [147820936] [2023-02-15 20:28:21,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 20:28:21,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 20:28:21,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 20:28:21,054 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) [2023-02-15 20:28:21,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 20:28:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 20:28:21,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 20:28:21,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 20:28:21,266 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-15 20:28:21,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 20:28:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-02-15 20:28:21,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 20:28:21,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493475356] [2023-02-15 20:28:21,419 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 20:28:21,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147820936] [2023-02-15 20:28:21,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147820936] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 20:28:21,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 20:28:21,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-02-15 20:28:21,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591131000] [2023-02-15 20:28:21,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 20:28:21,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-15 20:28:21,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 20:28:21,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-15 20:28:21,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-02-15 20:28:21,422 INFO L87 Difference]: Start difference. First operand 64 states and 75 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 20:28:21,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 20:28:21,537 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2023-02-15 20:28:21,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 20:28:21,538 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2023-02-15 20:28:21,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 20:28:21,538 INFO L225 Difference]: With dead ends: 64 [2023-02-15 20:28:21,538 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 20:28:21,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2023-02-15 20:28:21,539 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 31 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 20:28:21,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 55 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 20:28:21,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 20:28:21,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 20:28:21,539 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) [2023-02-15 20:28:21,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 20:28:21,539 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 42 [2023-02-15 20:28:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 20:28:21,539 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 20:28:21,539 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, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-15 20:28:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 20:28:21,540 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 20:28:21,541 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 20:28:21,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 20:28:21,746 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 [2023-02-15 20:28:21,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 20:28:22,304 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:28:22,304 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2023-02-15 20:28:22,304 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 23 65) the Hoare annotation is: true [2023-02-15 20:28:22,304 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 20:28:22,304 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 20:28:22,306 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2023-02-15 20:28:22,306 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-15 20:28:22,306 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2023-02-15 20:28:22,306 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:28:22,306 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= 1 |ULTIMATE.start_main_~y~0#1|))) (or (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) .cse0 (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) .cse1) (and (= |ULTIMATE.start_main_~q~0#1| 0) .cse0 (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) .cse1))) [2023-02-15 20:28:22,306 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 20:28:22,306 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|))) (and (<= (* 2 .cse0) |ULTIMATE.start_main_~r~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| .cse0) (<= 1 |ULTIMATE.start_main_~y~0#1|))) [2023-02-15 20:28:22,306 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2023-02-15 20:28:22,306 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:28:22,307 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (and (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:28:22,307 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (and (<= 1 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~q~0#1|))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~b~0#1| (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|)) [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-15 20:28:22,307 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-15 20:28:22,307 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-15 20:28:22,309 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 20:28:22,310 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 20:28:22,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 08:28:22 BoogieIcfgContainer [2023-02-15 20:28:22,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 20:28:22,322 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 20:28:22,322 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 20:28:22,322 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 20:28:22,323 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 08:28:17" (3/4) ... [2023-02-15 20:28:22,324 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 20:28:22,328 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 20:28:22,331 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-15 20:28:22,331 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 20:28:22,331 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 20:28:22,331 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 20:28:22,355 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 20:28:22,356 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 20:28:22,356 INFO L158 Benchmark]: Toolchain (without parser) took 5395.75ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 113.2MB in the beginning and 71.7MB in the end (delta: 41.5MB). Peak memory consumption was 76.6MB. Max. memory is 16.1GB. [2023-02-15 20:28:22,356 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 142.6MB. Free memory was 101.5MB in the beginning and 101.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 20:28:22,356 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.06ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 102.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:28:22,356 INFO L158 Benchmark]: Boogie Procedure Inliner took 17.62ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 100.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:28:22,357 INFO L158 Benchmark]: Boogie Preprocessor took 11.37ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:28:22,357 INFO L158 Benchmark]: RCFGBuilder took 197.69ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 89.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 20:28:22,357 INFO L158 Benchmark]: TraceAbstraction took 4962.80ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 88.4MB in the beginning and 74.8MB in the end (delta: 13.6MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. [2023-02-15 20:28:22,358 INFO L158 Benchmark]: Witness Printer took 33.39ms. Allocated memory is still 176.2MB. Free memory was 73.8MB in the beginning and 71.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 20:28:22,359 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 142.6MB. Free memory was 101.5MB in the beginning and 101.4MB in the end (delta: 159.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.06ms. Allocated memory is still 142.6MB. Free memory was 112.9MB in the beginning and 102.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 17.62ms. Allocated memory is still 142.6MB. Free memory was 102.5MB in the beginning and 100.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 11.37ms. Allocated memory is still 142.6MB. Free memory was 100.9MB in the beginning and 99.8MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 197.69ms. Allocated memory is still 142.6MB. Free memory was 99.8MB in the beginning and 89.0MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4962.80ms. Allocated memory was 142.6MB in the beginning and 176.2MB in the end (delta: 33.6MB). Free memory was 88.4MB in the beginning and 74.8MB in the end (delta: 13.6MB). Peak memory consumption was 49.4MB. Max. memory is 16.1GB. * Witness Printer took 33.39ms. Allocated memory is still 176.2MB. Free memory was 73.8MB in the beginning and 71.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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: 4.9s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 791 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 528 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 585 IncrementalHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 263 mSDtfsCounter, 585 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 326 GetRequests, 255 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=64occurred in iteration=8, InterpolantAutomatonStates: 52, 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, 9 MinimizatonAttempts, 17 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 39 PreInvPairs, 59 NumberOfFragments, 209 HoareAnnotationTreeSize, 39 FomulaSimplifications, 186 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 611 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 226 NumberOfCodeBlocks, 226 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 313 ConstructedInterpolants, 0 QuantifiedInterpolants, 1158 SizeOfPredicates, 33 NumberOfNonLiveVariables, 759 ConjunctsInSsa, 108 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 252/266 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 && x == r + y * q) && cond == 1) && b == y * a) && 1 <= y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((x == r + y * q && cond == 1) && b == y * a) && 1 <= y RESULT: Ultimate proved your program to be correct! [2023-02-15 20:28:22,382 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