./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e1ff0e6 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/ps4-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 --- Real Ultimate output --- This is Ultimate 0.2.2-?-7e1ff0e [2023-02-15 00:36:26,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 00:36:26,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 00:36:26,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 00:36:26,115 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 00:36:26,117 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 00:36:26,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 00:36:26,122 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 00:36:26,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 00:36:26,125 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 00:36:26,127 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 00:36:26,127 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 00:36:26,128 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 00:36:26,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 00:36:26,134 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 00:36:26,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 00:36:26,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 00:36:26,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 00:36:26,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 00:36:26,140 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 00:36:26,142 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 00:36:26,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 00:36:26,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 00:36:26,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 00:36:26,151 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 00:36:26,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 00:36:26,154 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 00:36:26,155 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 00:36:26,155 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 00:36:26,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 00:36:26,157 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 00:36:26,158 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 00:36:26,159 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 00:36:26,159 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 00:36:26,161 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 00:36:26,161 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 00:36:26,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 00:36:26,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 00:36:26,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 00:36:26,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 00:36:26,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 00:36:26,164 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 00:36:26,188 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 00:36:26,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 00:36:26,189 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 00:36:26,189 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 00:36:26,190 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 00:36:26,190 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 00:36:26,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 00:36:26,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 00:36:26,191 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 00:36:26,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 00:36:26,192 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 00:36:26,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 00:36:26,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 00:36:26,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 00:36:26,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 00:36:26,192 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 00:36:26,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 00:36:26,193 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 00:36:26,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 00:36:26,193 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 00:36:26,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 00:36:26,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 00:36:26,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 00:36:26,194 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 00:36:26,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:36:26,194 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 00:36:26,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 00:36:26,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 00:36:26,195 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 00:36:26,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 00:36:26,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 00:36:26,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 00:36:26,195 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 00:36:26,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 00:36:26,196 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 00:36:26,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c6f057d93c74db928b7d0b0915eda2af89e3a19cf93af1e21b1cfa684bd6cf4 [2023-02-15 00:36:26,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 00:36:26,398 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 00:36:26,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 00:36:26,402 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 00:36:26,402 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 00:36:26,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2023-02-15 00:36:27,415 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 00:36:27,575 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 00:36:27,575 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps4-ll_valuebound1.c [2023-02-15 00:36:27,580 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/220deeb8b/cbd7e9b975f5410d819e0879554f645e/FLAG02bac1518 [2023-02-15 00:36:27,594 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/220deeb8b/cbd7e9b975f5410d819e0879554f645e [2023-02-15 00:36:27,596 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 00:36:27,598 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 00:36:27,599 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 00:36:27,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 00:36:27,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 00:36:27,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18451b95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27, skipping insertion in model container [2023-02-15 00:36:27,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 00:36:27,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 00:36:27,707 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/ps4-ll_valuebound1.c[458,471] [2023-02-15 00:36:27,716 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:36:27,722 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 00:36:27,730 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/ps4-ll_valuebound1.c[458,471] [2023-02-15 00:36:27,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 00:36:27,743 INFO L208 MainTranslator]: Completed translation [2023-02-15 00:36:27,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27 WrapperNode [2023-02-15 00:36:27,744 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 00:36:27,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 00:36:27,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 00:36:27,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 00:36:27,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,762 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2023-02-15 00:36:27,763 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 00:36:27,763 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 00:36:27,763 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 00:36:27,764 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 00:36:27,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,778 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,779 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 00:36:27,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 00:36:27,780 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 00:36:27,780 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 00:36:27,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (1/1) ... [2023-02-15 00:36:27,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 00:36:27,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:36:27,806 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 00:36:27,808 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 00:36:27,832 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 00:36:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 00:36:27,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 00:36:27,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 00:36:27,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 00:36:27,837 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 00:36:27,878 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 00:36:27,879 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 00:36:27,965 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 00:36:27,969 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 00:36:27,969 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 00:36:27,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:27 BoogieIcfgContainer [2023-02-15 00:36:27,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 00:36:27,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 00:36:27,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 00:36:27,974 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 00:36:27,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 12:36:27" (1/3) ... [2023-02-15 00:36:27,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3146b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:36:27, skipping insertion in model container [2023-02-15 00:36:27,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 12:36:27" (2/3) ... [2023-02-15 00:36:27,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f3146b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 12:36:27, skipping insertion in model container [2023-02-15 00:36:27,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:27" (3/3) ... [2023-02-15 00:36:27,976 INFO L112 eAbstractionObserver]: Analyzing ICFG ps4-ll_valuebound1.c [2023-02-15 00:36:27,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 00:36:27,988 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 00:36:28,017 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 00:36:28,021 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;@6a48466, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 00:36:28,022 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 00:36:28,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 00:36:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 00:36:28,029 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:36:28,029 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:36:28,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:36:28,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:36:28,033 INFO L85 PathProgramCache]: Analyzing trace with hash -589436290, now seen corresponding path program 1 times [2023-02-15 00:36:28,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:36:28,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940771551] [2023-02-15 00:36:28,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:28,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:36:28,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:36:28,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:36:28,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940771551] [2023-02-15 00:36:28,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 00:36:28,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574268332] [2023-02-15 00:36:28,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:28,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:36:28,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:36:28,114 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 00:36:28,116 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 00:36:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:36:28,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 00:36:28,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:36:28,168 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 00:36:28,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:36:28,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574268332] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:36:28,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:36:28,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 00:36:28,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679021884] [2023-02-15 00:36:28,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:36:28,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 00:36:28,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:36:28,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 00:36:28,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 00:36:28,214 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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 00:36:28,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:36:28,252 INFO L93 Difference]: Finished difference Result 35 states and 49 transitions. [2023-02-15 00:36:28,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 00:36:28,254 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 00:36:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:36:28,272 INFO L225 Difference]: With dead ends: 35 [2023-02-15 00:36:28,278 INFO L226 Difference]: Without dead ends: 15 [2023-02-15 00:36:28,281 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 00:36:28,283 INFO L413 NwaCegarLoop]: 21 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, 21 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 00:36:28,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:36:28,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-02-15 00:36:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-02-15 00:36:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 00:36:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2023-02-15 00:36:28,305 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2023-02-15 00:36:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:36:28,306 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2023-02-15 00:36:28,306 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 00:36:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2023-02-15 00:36:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-15 00:36:28,307 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:36:28,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:36:28,311 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 00:36:28,511 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 00:36:28,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:36:28,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:36:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1187358532, now seen corresponding path program 1 times [2023-02-15 00:36:28,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:36:28,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142063820] [2023-02-15 00:36:28,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:28,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:36:28,522 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:36:28,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931436972] [2023-02-15 00:36:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:28,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:36:28,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:36:28,529 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 00:36:28,533 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 00:36:28,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:36:28,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-15 00:36:28,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:36:28,624 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 00:36:28,624 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:36:28,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:36:28,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142063820] [2023-02-15 00:36:28,625 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:36:28,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931436972] [2023-02-15 00:36:28,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931436972] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:36:28,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:36:28,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 00:36:28,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442765924] [2023-02-15 00:36:28,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:36:28,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 00:36:28,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:36:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 00:36:28,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 00:36:28,628 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 00:36:28,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:36:28,690 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2023-02-15 00:36:28,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 00:36:28,690 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 00:36:28,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:36:28,691 INFO L225 Difference]: With dead ends: 26 [2023-02-15 00:36:28,691 INFO L226 Difference]: Without dead ends: 22 [2023-02-15 00:36:28,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 00:36:28,692 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 6 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:36:28,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 45 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:36:28,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-02-15 00:36:28,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-02-15 00:36:28,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 00:36:28,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-15 00:36:28,697 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2023-02-15 00:36:28,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:36:28,697 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-15 00:36:28,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 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 00:36:28,698 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-15 00:36:28,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-15 00:36:28,698 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:36:28,698 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:36:28,703 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 00:36:28,902 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 00:36:28,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:36:28,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:36:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1781398469, now seen corresponding path program 1 times [2023-02-15 00:36:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:36:28,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527508653] [2023-02-15 00:36:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:36:28,929 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:36:28,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258072065] [2023-02-15 00:36:28,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:36:28,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:36:28,952 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 00:36:28,954 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 00:36:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:36:29,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 00:36:29,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:36:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:36:29,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:36:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-15 00:36:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:36:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527508653] [2023-02-15 00:36:29,242 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:36:29,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258072065] [2023-02-15 00:36:29,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258072065] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 00:36:29,242 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 00:36:29,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-15 00:36:29,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435383792] [2023-02-15 00:36:29,243 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 00:36:29,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 00:36:29,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:36:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 00:36:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-15 00:36:29,247 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 00:36:29,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:36:29,438 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2023-02-15 00:36:29,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 00:36:29,438 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2023-02-15 00:36:29,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:36:29,439 INFO L225 Difference]: With dead ends: 33 [2023-02-15 00:36:29,439 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 00:36:29,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-15 00:36:29,441 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 20 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 00:36:29,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 39 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 00:36:29,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 00:36:29,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2023-02-15 00:36:29,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 00:36:29,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2023-02-15 00:36:29,446 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 16 [2023-02-15 00:36:29,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:36:29,446 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2023-02-15 00:36:29,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 10 states have internal predecessors, (21), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 00:36:29,446 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2023-02-15 00:36:29,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-15 00:36:29,447 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:36:29,447 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:36:29,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-15 00:36:29,667 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 00:36:29,668 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:36:29,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:36:29,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1711372296, now seen corresponding path program 1 times [2023-02-15 00:36:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:36:29,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851723456] [2023-02-15 00:36:29,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:36:29,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:36:29,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1440800324] [2023-02-15 00:36:29,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:36:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:36:29,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:36:29,689 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 00:36:29,690 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 00:36:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 00:36:29,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-15 00:36:29,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:36:29,799 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 00:36:29,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 00:37:07,397 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0)))) is different from true [2023-02-15 00:37:25,453 WARN L859 $PredicateComparison]: unable to prove that (or (not (= |c___VERIFIER_assert_#in~cond| 0)) (forall ((|v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| Int)) (or (= (* |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* |v_ULTIMATE.start_main_~k~0#1_BEFORE_CALL_3| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) (= (mod (+ (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 3 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|) (* 2 |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8| |v_ULTIMATE.start_main_~y~0#1_BEFORE_CALL_8|)) 4) 0))) (= c___VERIFIER_assert_~cond 0)) is different from true [2023-02-15 00:37:31,488 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (= (+ |ULTIMATE.start_main_~k~0#1| (* |c_ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~k~0#1|)) (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| 2) 1)))) (not (= (mod (+ (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 2) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| 3)) 4) 0))) is different from false [2023-02-15 00:37:33,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:37:33,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851723456] [2023-02-15 00:37:33,509 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:37:33,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1440800324] [2023-02-15 00:37:33,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1440800324] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 00:37:33,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 00:37:33,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-02-15 00:37:33,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015028225] [2023-02-15 00:37:33,509 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 00:37:33,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-15 00:37:33,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:37:33,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-15 00:37:33,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=120, Unknown=6, NotChecked=72, Total=240 [2023-02-15 00:37:33,510 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 00:37:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:37:33,601 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2023-02-15 00:37:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 00:37:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2023-02-15 00:37:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:37:33,603 INFO L225 Difference]: With dead ends: 31 [2023-02-15 00:37:33,603 INFO L226 Difference]: Without dead ends: 26 [2023-02-15 00:37:33,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 17.5s TimeCoverageRelationStatistics Valid=62, Invalid=184, Unknown=6, NotChecked=90, Total=342 [2023-02-15 00:37:33,604 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 00:37:33,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 60 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 00:37:33,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-15 00:37:33,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-15 00:37:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 00:37:33,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2023-02-15 00:37:33,612 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2023-02-15 00:37:33,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:37:33,612 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2023-02-15 00:37:33,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-15 00:37:33,613 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2023-02-15 00:37:33,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-15 00:37:33,613 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 00:37:33,613 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 00:37:33,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-15 00:37:33,814 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 00:37:33,814 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 00:37:33,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 00:37:33,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1075497887, now seen corresponding path program 2 times [2023-02-15 00:37:33,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 00:37:33,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035222998] [2023-02-15 00:37:33,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 00:37:33,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 00:37:33,821 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 00:37:33,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196855570] [2023-02-15 00:37:33,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 00:37:33,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 00:37:33,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 00:37:33,822 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 00:37:33,824 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 00:37:33,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 00:37:33,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 00:37:33,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-15 00:37:33,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 00:37:33,920 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 00:37:33,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 00:37:33,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 00:37:33,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035222998] [2023-02-15 00:37:33,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 00:37:33,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196855570] [2023-02-15 00:37:33,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196855570] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 00:37:33,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 00:37:33,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-15 00:37:33,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413062854] [2023-02-15 00:37:33,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 00:37:33,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-15 00:37:33,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 00:37:33,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-15 00:37:33,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-15 00:37:33,923 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 00:37:33,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 00:37:33,982 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2023-02-15 00:37:33,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 00:37:33,983 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-02-15 00:37:33,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 00:37:33,983 INFO L225 Difference]: With dead ends: 30 [2023-02-15 00:37:33,983 INFO L226 Difference]: Without dead ends: 0 [2023-02-15 00:37:33,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-15 00:37:33,984 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 00:37:33,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 00:37:33,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-15 00:37:33,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-15 00:37:33,985 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 00:37:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-15 00:37:33,985 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2023-02-15 00:37:33,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 00:37:33,985 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-15 00:37:33,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-15 00:37:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-15 00:37:33,986 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-15 00:37:33,988 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 00:37:34,009 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 00:37:34,193 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 00:37:34,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-15 00:37:34,321 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L895 garLoopResultBuilder]: At program point L27-2(lines 27 36) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 1))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4))) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) .cse1 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2023-02-15 00:37:34,322 INFO L895 garLoopResultBuilder]: At program point L27-3(lines 27 36) the Hoare annotation is: (or (and (<= |ULTIMATE.start_main_~k~0#1| 1) (<= |ULTIMATE.start_main_~c~0#1| 1) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4))) (and (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0))) [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 17 40) the Hoare annotation is: true [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point L38(line 38) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1)) (.cse1 (<= |ULTIMATE.start_main_~k~0#1| 1))) (or (and .cse0 .cse1 (<= |ULTIMATE.start_main_~c~0#1| 1) (<= 1 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start_main_~y~0#1| 1) (< 0 |ULTIMATE.start_main_~k~0#1|) (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4))) (and (<= 0 |ULTIMATE.start_main_~k~0#1|) .cse0 (= |ULTIMATE.start_main_~c~0#1| 0) .cse1 (= |ULTIMATE.start_main_~y~0#1| 0) (= |ULTIMATE.start_main_~x~0#1| 0)))) [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point L28-1(lines 27 36) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (= (+ (* (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) 2) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (* |ULTIMATE.start_main_~x~0#1| 4)) [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 12) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 13) no Hoare annotation was computed. [2023-02-15 00:37:34,322 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2023-02-15 00:37:34,323 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 15) the Hoare annotation is: true [2023-02-15 00:37:34,323 INFO L899 garLoopResultBuilder]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2023-02-15 00:37:34,323 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2023-02-15 00:37:34,325 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2023-02-15 00:37:34,326 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 00:37:34,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 12:37:34 BoogieIcfgContainer [2023-02-15 00:37:34,335 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 00:37:34,335 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 00:37:34,335 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 00:37:34,336 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 00:37:34,340 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:36:27" (3/4) ... [2023-02-15 00:37:34,354 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-15 00:37:34,358 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-15 00:37:34,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-15 00:37:34,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-15 00:37:34,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-15 00:37:34,360 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-15 00:37:34,379 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-15 00:37:34,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 00:37:34,380 INFO L158 Benchmark]: Toolchain (without parser) took 66782.18ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 93.1MB in the beginning and 74.3MB in the end (delta: 18.8MB). Peak memory consumption was 56.3MB. Max. memory is 16.1GB. [2023-02-15 00:37:34,380 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 00:37:34,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 144.60ms. Allocated memory is still 138.4MB. Free memory was 93.1MB in the beginning and 82.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 00:37:34,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.42ms. Allocated memory is still 138.4MB. Free memory was 82.7MB in the beginning and 81.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 00:37:34,381 INFO L158 Benchmark]: Boogie Preprocessor took 15.67ms. Allocated memory is still 138.4MB. Free memory was 81.3MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 00:37:34,381 INFO L158 Benchmark]: RCFGBuilder took 190.84ms. Allocated memory is still 138.4MB. Free memory was 80.2MB in the beginning and 70.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 00:37:34,381 INFO L158 Benchmark]: TraceAbstraction took 66363.43ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 69.3MB in the beginning and 77.5MB in the end (delta: -8.2MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. [2023-02-15 00:37:34,381 INFO L158 Benchmark]: Witness Printer took 44.06ms. Allocated memory is still 174.1MB. Free memory was 77.5MB in the beginning and 74.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-15 00:37:34,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 138.4MB. Free memory is still 83.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 144.60ms. Allocated memory is still 138.4MB. Free memory was 93.1MB in the beginning and 82.7MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.42ms. Allocated memory is still 138.4MB. Free memory was 82.7MB in the beginning and 81.4MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.67ms. Allocated memory is still 138.4MB. Free memory was 81.3MB in the beginning and 80.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 190.84ms. Allocated memory is still 138.4MB. Free memory was 80.2MB in the beginning and 70.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 66363.43ms. Allocated memory was 138.4MB in the beginning and 174.1MB in the end (delta: 35.7MB). Free memory was 69.3MB in the beginning and 77.5MB in the end (delta: -8.2MB). Peak memory consumption was 29.0MB. Max. memory is 16.1GB. * Witness Printer took 44.06ms. Allocated memory is still 174.1MB. Free memory was 77.5MB in the beginning and 74.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 12]: 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, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 66.3s, OverallIterations: 5, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 190 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 118 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 182 IncrementalHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 72 mSDtfsCounter, 182 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 17.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 17 PreInvPairs, 27 NumberOfFragments, 177 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 63 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 64.2s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 95 ConstructedInterpolants, 0 QuantifiedInterpolants, 381 SizeOfPredicates, 13 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 38/46 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: 17]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: ((((((cond == 1 && k <= 1) && c <= 1) && 1 <= c) && y == 1) && 0 < k) && y * y * y * 2 + y * y * y * y + y * y == x * 4) || (((((0 <= k && cond == 1) && c == 0) && k <= 1) && y == 0) && x == 0) RESULT: Ultimate proved your program to be correct! [2023-02-15 00:37:34,400 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