./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae 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/mannadiv_unwindbound20.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4a3cef13903dd032b032a92c3e6d07b1ee77361a4ee844998d70fb602ded6daa --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:42:40,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:42:40,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:42:40,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:42:40,598 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:42:40,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:42:40,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:42:40,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:42:40,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:42:40,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:42:40,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:42:40,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:42:40,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:42:40,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:42:40,614 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:42:40,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:42:40,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:42:40,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:42:40,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:42:40,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:42:40,622 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:42:40,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:42:40,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:42:40,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:42:40,630 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:42:40,630 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:42:40,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:42:40,632 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:42:40,632 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:42:40,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:42:40,633 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:42:40,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:42:40,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:42:40,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:42:40,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:42:40,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:42:40,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:42:40,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:42:40,637 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:42:40,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:42:40,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:42:40,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:42:40,662 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:42:40,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:42:40,663 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:42:40,663 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:42:40,664 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:42:40,664 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:42:40,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:42:40,665 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:42:40,665 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:42:40,665 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:42:40,666 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:42:40,666 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:42:40,666 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:42:40,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:42:40,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:42:40,666 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:42:40,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:42:40,667 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:42:40,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:42:40,667 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:42:40,667 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:42:40,667 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:42:40,667 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:42:40,667 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:42:40,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:42:40,668 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:42:40,668 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:42:40,668 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:42:40,668 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:42:40,668 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:42:40,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:42:40,669 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:42:40,669 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:42:40,669 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:42:40,669 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:42:40,669 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a3cef13903dd032b032a92c3e6d07b1ee77361a4ee844998d70fb602ded6daa [2023-02-16 02:42:40,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:42:40,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:42:40,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:42:40,865 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:42:40,866 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:42:40,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c [2023-02-16 02:42:41,849 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:42:41,994 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:42:41,995 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound20.c [2023-02-16 02:42:41,998 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8244e43aa/050bbde580ca4ac48aff6dc2d898fc68/FLAGdc957d29f [2023-02-16 02:42:42,006 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8244e43aa/050bbde580ca4ac48aff6dc2d898fc68 [2023-02-16 02:42:42,008 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:42:42,009 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:42:42,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:42:42,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:42:42,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:42:42,012 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,013 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fa10a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42, skipping insertion in model container [2023-02-16 02:42:42,013 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:42:42,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:42:42,111 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/mannadiv_unwindbound20.c[573,586] [2023-02-16 02:42:42,121 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:42:42,127 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:42:42,134 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/mannadiv_unwindbound20.c[573,586] [2023-02-16 02:42:42,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:42:42,146 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:42:42,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42 WrapperNode [2023-02-16 02:42:42,146 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:42:42,147 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:42:42,147 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:42:42,147 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:42:42,152 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,157 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,167 INFO L138 Inliner]: procedures = 14, calls = 11, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-02-16 02:42:42,167 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:42:42,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:42:42,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:42:42,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:42:42,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,179 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:42:42,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:42:42,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:42:42,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:42:42,182 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (1/1) ... [2023-02-16 02:42:42,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:42:42,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:42,210 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) [2023-02-16 02:42:42,218 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 [2023-02-16 02:42:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:42:42,238 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 02:42:42,239 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 02:42:42,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:42:42,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:42:42,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:42:42,239 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:42:42,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:42:42,282 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:42:42,283 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:42:42,408 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:42:42,415 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:42:42,415 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-16 02:42:42,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:42:42 BoogieIcfgContainer [2023-02-16 02:42:42,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:42:42,431 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:42:42,431 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:42:42,434 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:42:42,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:42:42" (1/3) ... [2023-02-16 02:42:42,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b7015f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:42:42, skipping insertion in model container [2023-02-16 02:42:42,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:42:42" (2/3) ... [2023-02-16 02:42:42,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24b7015f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:42:42, skipping insertion in model container [2023-02-16 02:42:42,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:42:42" (3/3) ... [2023-02-16 02:42:42,451 INFO L112 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound20.c [2023-02-16 02:42:42,462 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:42:42,476 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:42:42,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:42:42,525 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;@7ff17b82, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:42:42,526 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:42:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:42:42,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 02:42:42,538 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:42,538 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:42,539 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:42,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1086166160, now seen corresponding path program 1 times [2023-02-16 02:42:42,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:42,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327098233] [2023-02-16 02:42:42,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:42,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:42,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:42,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:42:42,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327098233] [2023-02-16 02:42:42,675 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 02:42:42,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980899498] [2023-02-16 02:42:42,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:42,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:42,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:42,680 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) [2023-02-16 02:42:42,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:42:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:42,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:42:42,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:42,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-16 02:42:42,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:42:42,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980899498] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:42:42,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:42:42,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:42:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918219077] [2023-02-16 02:42:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:42:42,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:42:42,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:42:42,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:42:42,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:42:42,775 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:42:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:42,788 INFO L93 Difference]: Finished difference Result 47 states and 64 transitions. [2023-02-16 02:42:42,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:42:42,790 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-16 02:42:42,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:42,794 INFO L225 Difference]: With dead ends: 47 [2023-02-16 02:42:42,794 INFO L226 Difference]: Without dead ends: 21 [2023-02-16 02:42:42,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:42:42,798 INFO L413 NwaCegarLoop]: 29 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, 29 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 [2023-02-16 02:42:42,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:42:42,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-02-16 02:42:42,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-02-16 02:42:42,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 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) [2023-02-16 02:42:42,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2023-02-16 02:42:42,832 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 18 [2023-02-16 02:42:42,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:42,832 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2023-02-16 02:42:42,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:42:42,833 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2023-02-16 02:42:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 02:42:42,840 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:42,840 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:42,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-16 02:42:43,046 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 [2023-02-16 02:42:43,047 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1345709874, now seen corresponding path program 1 times [2023-02-16 02:42:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:43,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558708012] [2023-02-16 02:42:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:43,066 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:42:43,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1500184472] [2023-02-16 02:42:43,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:43,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:43,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:43,071 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) [2023-02-16 02:42:43,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:42:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:43,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 02:42:43,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:43,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:42:43,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:42:43,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:42:43,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558708012] [2023-02-16 02:42:43,172 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:42:43,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1500184472] [2023-02-16 02:42:43,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1500184472] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:42:43,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:42:43,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 02:42:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057230755] [2023-02-16 02:42:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:42:43,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 02:42:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:42:43,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 02:42:43,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 02:42:43,180 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-16 02:42:43,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:43,193 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2023-02-16 02:42:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 02:42:43,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 19 [2023-02-16 02:42:43,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:43,194 INFO L225 Difference]: With dead ends: 30 [2023-02-16 02:42:43,194 INFO L226 Difference]: Without dead ends: 23 [2023-02-16 02:42:43,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 02:42:43,195 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:43,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:42:43,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-16 02:42:43,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-02-16 02:42:43,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 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) [2023-02-16 02:42:43,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2023-02-16 02:42:43,200 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 19 [2023-02-16 02:42:43,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:43,203 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2023-02-16 02:42:43,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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) [2023-02-16 02:42:43,203 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2023-02-16 02:42:43,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-02-16 02:42:43,204 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:43,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:43,209 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 02:42:43,404 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 [2023-02-16 02:42:43,404 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:43,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:43,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1347497334, now seen corresponding path program 1 times [2023-02-16 02:42:43,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:43,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474372591] [2023-02-16 02:42:43,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:43,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:43,414 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:42:43,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055586957] [2023-02-16 02:42:43,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:43,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:43,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:43,416 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) [2023-02-16 02:42:43,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:42:43,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:43,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-16 02:42:43,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:42:43,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:42:43,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:42:43,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474372591] [2023-02-16 02:42:43,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:42:43,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055586957] [2023-02-16 02:42:43,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055586957] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:42:43,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:42:43,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-16 02:42:43,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846553029] [2023-02-16 02:42:43,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:42:43,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 02:42:43,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:42:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 02:42:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-16 02:42:43,694 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:42:43,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:43,787 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2023-02-16 02:42:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 02:42:43,787 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 19 [2023-02-16 02:42:43,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:43,791 INFO L225 Difference]: With dead ends: 33 [2023-02-16 02:42:43,791 INFO L226 Difference]: Without dead ends: 31 [2023-02-16 02:42:43,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:42:43,794 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 29 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:43,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 73 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:42:43,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-16 02:42:43,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2023-02-16 02:42:43,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 21 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 02:42:43,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2023-02-16 02:42:43,811 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 19 [2023-02-16 02:42:43,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:43,812 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2023-02-16 02:42:43,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.375) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 02:42:43,812 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2023-02-16 02:42:43,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 02:42:43,813 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:43,813 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:43,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:44,014 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 [2023-02-16 02:42:44,014 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:44,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:44,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1636478750, now seen corresponding path program 1 times [2023-02-16 02:42:44,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:44,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642803909] [2023-02-16 02:42:44,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:44,026 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:42:44,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219623048] [2023-02-16 02:42:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:44,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:44,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:44,027 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) [2023-02-16 02:42:44,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:42:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:44,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 02:42:44,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:44,170 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 02:42:44,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:42:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:42:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:42:44,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642803909] [2023-02-16 02:42:44,302 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:42:44,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219623048] [2023-02-16 02:42:44,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219623048] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:42:44,302 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:42:44,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2023-02-16 02:42:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624763356] [2023-02-16 02:42:44,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:42:44,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 02:42:44,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:42:44,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 02:42:44,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-02-16 02:42:44,304 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:42:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:44,441 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2023-02-16 02:42:44,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 02:42:44,443 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 25 [2023-02-16 02:42:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:44,448 INFO L225 Difference]: With dead ends: 35 [2023-02-16 02:42:44,448 INFO L226 Difference]: Without dead ends: 30 [2023-02-16 02:42:44,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2023-02-16 02:42:44,452 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:44,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 86 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:42:44,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2023-02-16 02:42:44,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2023-02-16 02:42:44,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 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) [2023-02-16 02:42:44,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2023-02-16 02:42:44,463 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 25 [2023-02-16 02:42:44,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:44,463 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2023-02-16 02:42:44,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 12 states have internal predecessors, (26), 5 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:42:44,463 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2023-02-16 02:42:44,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 02:42:44,464 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:44,464 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:44,472 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-02-16 02:42:44,671 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 [2023-02-16 02:42:44,672 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:44,672 INFO L85 PathProgramCache]: Analyzing trace with hash -126969667, now seen corresponding path program 1 times [2023-02-16 02:42:44,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:44,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160442739] [2023-02-16 02:42:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:44,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:44,680 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:42:44,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1788290815] [2023-02-16 02:42:44,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:44,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:44,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:44,681 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) [2023-02-16 02:42:44,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:42:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:42:44,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 02:42:44,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:44,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:42:44,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:42:44,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:42:44,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:42:44,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160442739] [2023-02-16 02:42:44,793 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:42:44,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788290815] [2023-02-16 02:42:44,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788290815] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:42:44,793 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:42:44,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2023-02-16 02:42:44,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400214067] [2023-02-16 02:42:44,793 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:42:44,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 02:42:44,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:42:44,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 02:42:44,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:42:44,794 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:42:44,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:44,842 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2023-02-16 02:42:44,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 02:42:44,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2023-02-16 02:42:44,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:44,844 INFO L225 Difference]: With dead ends: 57 [2023-02-16 02:42:44,844 INFO L226 Difference]: Without dead ends: 52 [2023-02-16 02:42:44,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:42:44,845 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:44,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 111 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:42:44,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-02-16 02:42:44,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-02-16 02:42:44,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 39 states have (on average 1.1282051282051282) internal successors, (44), 39 states have internal predecessors, (44), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-16 02:42:44,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 57 transitions. [2023-02-16 02:42:44,861 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 57 transitions. Word has length 28 [2023-02-16 02:42:44,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:44,862 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 57 transitions. [2023-02-16 02:42:44,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 5 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-16 02:42:44,862 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 57 transitions. [2023-02-16 02:42:44,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-02-16 02:42:44,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:44,864 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:44,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:45,069 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 [2023-02-16 02:42:45,070 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:45,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:45,070 INFO L85 PathProgramCache]: Analyzing trace with hash 972990450, now seen corresponding path program 2 times [2023-02-16 02:42:45,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:45,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578794085] [2023-02-16 02:42:45,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:45,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:45,078 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:42:45,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053471310] [2023-02-16 02:42:45,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:42:45,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:45,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:45,079 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) [2023-02-16 02:42:45,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:42:45,118 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:42:45,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:42:45,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-16 02:42:45,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:45,197 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 62 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:42:45,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:42:45,279 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 8 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-16 02:42:45,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:42:45,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578794085] [2023-02-16 02:42:45,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:42:45,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053471310] [2023-02-16 02:42:45,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053471310] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:42:45,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:42:45,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2023-02-16 02:42:45,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958103439] [2023-02-16 02:42:45,279 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:42:45,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 02:42:45,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:42:45,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 02:42:45,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:42:45,281 INFO L87 Difference]: Start difference. First operand 52 states and 57 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-02-16 02:42:45,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:45,393 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2023-02-16 02:42:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-02-16 02:42:45,394 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 55 [2023-02-16 02:42:45,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:45,394 INFO L225 Difference]: With dead ends: 111 [2023-02-16 02:42:45,394 INFO L226 Difference]: Without dead ends: 106 [2023-02-16 02:42:45,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2023-02-16 02:42:45,395 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:45,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 136 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:42:45,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-16 02:42:45,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-02-16 02:42:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.1358024691358024) internal successors, (92), 81 states have internal predecessors, (92), 13 states have call successors, (13), 12 states have call predecessors, (13), 11 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:42:45,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 117 transitions. [2023-02-16 02:42:45,407 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 117 transitions. Word has length 55 [2023-02-16 02:42:45,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:45,407 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 117 transitions. [2023-02-16 02:42:45,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 11 states have call successors, (13), 7 states have call predecessors, (13), 6 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2023-02-16 02:42:45,407 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 117 transitions. [2023-02-16 02:42:45,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-02-16 02:42:45,408 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:45,409 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:45,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:45,613 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 [2023-02-16 02:42:45,614 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:45,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:45,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1909967598, now seen corresponding path program 3 times [2023-02-16 02:42:45,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:45,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018775508] [2023-02-16 02:42:45,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:45,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:45,639 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:42:45,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1252887526] [2023-02-16 02:42:45,639 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 02:42:45,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:45,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:45,640 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) [2023-02-16 02:42:45,642 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 02:42:45,708 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-02-16 02:42:45,708 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:42:45,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-16 02:42:45,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:42:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 425 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-16 02:42:45,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:42:46,134 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 20 proven. 245 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2023-02-16 02:42:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:42:46,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018775508] [2023-02-16 02:42:46,135 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:42:46,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252887526] [2023-02-16 02:42:46,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252887526] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:42:46,135 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:42:46,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 24 [2023-02-16 02:42:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330283678] [2023-02-16 02:42:46,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:42:46,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-02-16 02:42:46,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:42:46,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-02-16 02:42:46,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=316, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:42:46,138 INFO L87 Difference]: Start difference. First operand 106 states and 117 transitions. Second operand has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2023-02-16 02:42:46,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:42:46,436 INFO L93 Difference]: Finished difference Result 201 states and 231 transitions. [2023-02-16 02:42:46,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-02-16 02:42:46,437 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) Word has length 109 [2023-02-16 02:42:46,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:42:46,438 INFO L225 Difference]: With dead ends: 201 [2023-02-16 02:42:46,438 INFO L226 Difference]: Without dead ends: 196 [2023-02-16 02:42:46,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=665, Invalid=1141, Unknown=0, NotChecked=0, Total=1806 [2023-02-16 02:42:46,439 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 126 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:42:46,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 255 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:42:46,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-02-16 02:42:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 196. [2023-02-16 02:42:46,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 151 states have (on average 1.1390728476821192) internal successors, (172), 151 states have internal predecessors, (172), 23 states have call successors, (23), 22 states have call predecessors, (23), 21 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-02-16 02:42:46,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 217 transitions. [2023-02-16 02:42:46,456 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 217 transitions. Word has length 109 [2023-02-16 02:42:46,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:42:46,456 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 217 transitions. [2023-02-16 02:42:46,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.333333333333333) internal successors, (128), 24 states have internal predecessors, (128), 21 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 20 states have call predecessors, (24), 20 states have call successors, (24) [2023-02-16 02:42:46,457 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 217 transitions. [2023-02-16 02:42:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2023-02-16 02:42:46,458 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:42:46,458 INFO L195 NwaCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 20, 20, 20, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:42:46,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:46,663 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 [2023-02-16 02:42:46,664 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:42:46,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:42:46,664 INFO L85 PathProgramCache]: Analyzing trace with hash 32762610, now seen corresponding path program 4 times [2023-02-16 02:42:46,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:42:46,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132487075] [2023-02-16 02:42:46,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:42:46,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:42:46,675 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:42:46,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1874840820] [2023-02-16 02:42:46,675 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-16 02:42:46,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:42:46,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:42:46,676 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) [2023-02-16 02:42:46,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 02:42:46,772 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-16 02:42:46,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2023-02-16 02:42:46,772 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-16 02:42:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-16 02:42:46,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-16 02:42:46,883 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-16 02:42:46,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:42:46,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 02:42:47,107 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 [2023-02-16 02:42:47,110 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-02-16 02:42:47,112 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:42:47,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:42:47 BoogieIcfgContainer [2023-02-16 02:42:47,187 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:42:47,188 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:42:47,188 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:42:47,188 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:42:47,188 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:42:42" (3/4) ... [2023-02-16 02:42:47,190 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-02-16 02:42:47,248 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-16 02:42:47,249 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:42:47,249 INFO L158 Benchmark]: Toolchain (without parser) took 5240.21ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 78.6MB in the beginning and 67.7MB in the end (delta: 10.8MB). Peak memory consumption was 49.0MB. Max. memory is 16.1GB. [2023-02-16 02:42:47,249 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 102.8MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:42:47,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.85ms. Allocated memory is still 123.7MB. Free memory was 78.1MB in the beginning and 68.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:42:47,249 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.49ms. Allocated memory is still 123.7MB. Free memory was 68.0MB in the beginning and 66.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:42:47,250 INFO L158 Benchmark]: Boogie Preprocessor took 12.89ms. Allocated memory is still 123.7MB. Free memory was 66.3MB in the beginning and 65.4MB in the end (delta: 981.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:42:47,250 INFO L158 Benchmark]: RCFGBuilder took 238.29ms. Allocated memory is still 123.7MB. Free memory was 64.9MB in the beginning and 55.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-16 02:42:47,250 INFO L158 Benchmark]: TraceAbstraction took 4756.29ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 53.9MB in the beginning and 76.1MB in the end (delta: -22.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. [2023-02-16 02:42:47,250 INFO L158 Benchmark]: Witness Printer took 60.96ms. Allocated memory is still 159.4MB. Free memory was 76.1MB in the beginning and 67.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-16 02:42:47,251 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 102.8MB. Free memory is still 54.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.85ms. Allocated memory is still 123.7MB. Free memory was 78.1MB in the beginning and 68.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.49ms. Allocated memory is still 123.7MB. Free memory was 68.0MB in the beginning and 66.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.89ms. Allocated memory is still 123.7MB. Free memory was 66.3MB in the beginning and 65.4MB in the end (delta: 981.9kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 238.29ms. Allocated memory is still 123.7MB. Free memory was 64.9MB in the beginning and 55.0MB in the end (delta: 9.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4756.29ms. Allocated memory was 123.7MB in the beginning and 159.4MB in the end (delta: 35.7MB). Free memory was 53.9MB in the beginning and 76.1MB in the end (delta: -22.2MB). Peak memory consumption was 15.5MB. Max. memory is 16.1GB. * Witness Printer took 60.96ms. Allocated memory is still 159.4MB. Free memory was 76.1MB in the beginning and 67.7MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L29] CALL assume_abort_if_not(x1 >= 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L29] RET assume_abort_if_not(x1 >= 0) VAL [counter=0, x1=21, x2=1] [L30] CALL assume_abort_if_not(x2 != 0) VAL [\old(cond)=1, counter=0] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, counter=0] [L30] RET assume_abort_if_not(x2 != 0) VAL [counter=0, x1=21, x2=1] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0, x1=21, x2=1, y1=0, y2=0, y3=21] [L36] EXPR counter++ VAL [counter=1, counter++=0, x1=21, x2=1, y1=0, y2=0, y3=21] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=1] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=1] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=1, x1=21, x2=1, y1=0, y2=0, y3=21] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1, x1=21, x2=1, y1=0, y2=0, y3=21] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1, x1=21, x2=1, y1=1, y2=0, y3=20] [L36] EXPR counter++ VAL [counter=2, counter++=1, x1=21, x2=1, y1=1, y2=0, y3=20] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=2] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=2] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=2, x1=21, x2=1, y1=1, y2=0, y3=20] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2, x1=21, x2=1, y1=1, y2=0, y3=20] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2, x1=21, x2=1, y1=2, y2=0, y3=19] [L36] EXPR counter++ VAL [counter=3, counter++=2, x1=21, x2=1, y1=2, y2=0, y3=19] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=3] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=3] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=3, x1=21, x2=1, y1=2, y2=0, y3=19] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3, x1=21, x2=1, y1=2, y2=0, y3=19] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3, x1=21, x2=1, y1=3, y2=0, y3=18] [L36] EXPR counter++ VAL [counter=4, counter++=3, x1=21, x2=1, y1=3, y2=0, y3=18] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=4] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=4] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=4, x1=21, x2=1, y1=3, y2=0, y3=18] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4, x1=21, x2=1, y1=3, y2=0, y3=18] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4, x1=21, x2=1, y1=4, y2=0, y3=17] [L36] EXPR counter++ VAL [counter=5, counter++=4, x1=21, x2=1, y1=4, y2=0, y3=17] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=5] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=5] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=5, x1=21, x2=1, y1=4, y2=0, y3=17] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5, x1=21, x2=1, y1=4, y2=0, y3=17] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5, x1=21, x2=1, y1=5, y2=0, y3=16] [L36] EXPR counter++ VAL [counter=6, counter++=5, x1=21, x2=1, y1=5, y2=0, y3=16] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=6] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=6] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=6, x1=21, x2=1, y1=5, y2=0, y3=16] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6, x1=21, x2=1, y1=5, y2=0, y3=16] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6, x1=21, x2=1, y1=6, y2=0, y3=15] [L36] EXPR counter++ VAL [counter=7, counter++=6, x1=21, x2=1, y1=6, y2=0, y3=15] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=7] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=7] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=7, x1=21, x2=1, y1=6, y2=0, y3=15] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7, x1=21, x2=1, y1=6, y2=0, y3=15] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7, x1=21, x2=1, y1=7, y2=0, y3=14] [L36] EXPR counter++ VAL [counter=8, counter++=7, x1=21, x2=1, y1=7, y2=0, y3=14] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=8] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=8] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=8, x1=21, x2=1, y1=7, y2=0, y3=14] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8, x1=21, x2=1, y1=7, y2=0, y3=14] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8, x1=21, x2=1, y1=8, y2=0, y3=13] [L36] EXPR counter++ VAL [counter=9, counter++=8, x1=21, x2=1, y1=8, y2=0, y3=13] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=9] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=9] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=9, x1=21, x2=1, y1=8, y2=0, y3=13] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9, x1=21, x2=1, y1=8, y2=0, y3=13] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9, x1=21, x2=1, y1=9, y2=0, y3=12] [L36] EXPR counter++ VAL [counter=10, counter++=9, x1=21, x2=1, y1=9, y2=0, y3=12] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=10] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=10] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=10, x1=21, x2=1, y1=9, y2=0, y3=12] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10, x1=21, x2=1, y1=9, y2=0, y3=12] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10, x1=21, x2=1, y1=10, y2=0, y3=11] [L36] EXPR counter++ VAL [counter=11, counter++=10, x1=21, x2=1, y1=10, y2=0, y3=11] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=11] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=11] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=11, x1=21, x2=1, y1=10, y2=0, y3=11] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=11, x1=21, x2=1, y1=10, y2=0, y3=11] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=11, x1=21, x2=1, y1=11, y2=0, y3=10] [L36] EXPR counter++ VAL [counter=12, counter++=11, x1=21, x2=1, y1=11, y2=0, y3=10] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=12] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=12] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=12, x1=21, x2=1, y1=11, y2=0, y3=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=12, x1=21, x2=1, y1=11, y2=0, y3=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=12, x1=21, x2=1, y1=12, y2=0, y3=9] [L36] EXPR counter++ VAL [counter=13, counter++=12, x1=21, x2=1, y1=12, y2=0, y3=9] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=13] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=13] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=13, x1=21, x2=1, y1=12, y2=0, y3=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=13, x1=21, x2=1, y1=12, y2=0, y3=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=13, x1=21, x2=1, y1=13, y2=0, y3=8] [L36] EXPR counter++ VAL [counter=14, counter++=13, x1=21, x2=1, y1=13, y2=0, y3=8] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=14] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=14] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=14, x1=21, x2=1, y1=13, y2=0, y3=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=14, x1=21, x2=1, y1=13, y2=0, y3=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=14, x1=21, x2=1, y1=14, y2=0, y3=7] [L36] EXPR counter++ VAL [counter=15, counter++=14, x1=21, x2=1, y1=14, y2=0, y3=7] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=15] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=15] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=15, x1=21, x2=1, y1=14, y2=0, y3=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=15, x1=21, x2=1, y1=14, y2=0, y3=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=15, x1=21, x2=1, y1=15, y2=0, y3=6] [L36] EXPR counter++ VAL [counter=16, counter++=15, x1=21, x2=1, y1=15, y2=0, y3=6] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=16] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=16] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=16, x1=21, x2=1, y1=15, y2=0, y3=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=16, x1=21, x2=1, y1=15, y2=0, y3=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=16, x1=21, x2=1, y1=16, y2=0, y3=5] [L36] EXPR counter++ VAL [counter=17, counter++=16, x1=21, x2=1, y1=16, y2=0, y3=5] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=17] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=17] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=17, x1=21, x2=1, y1=16, y2=0, y3=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=17, x1=21, x2=1, y1=16, y2=0, y3=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=17, x1=21, x2=1, y1=17, y2=0, y3=4] [L36] EXPR counter++ VAL [counter=18, counter++=17, x1=21, x2=1, y1=17, y2=0, y3=4] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=18] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=18] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=18, x1=21, x2=1, y1=17, y2=0, y3=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=18, x1=21, x2=1, y1=17, y2=0, y3=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=18, x1=21, x2=1, y1=18, y2=0, y3=3] [L36] EXPR counter++ VAL [counter=19, counter++=18, x1=21, x2=1, y1=18, y2=0, y3=3] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=19] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=19] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=19, x1=21, x2=1, y1=18, y2=0, y3=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=19, x1=21, x2=1, y1=18, y2=0, y3=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=19, x1=21, x2=1, y1=19, y2=0, y3=2] [L36] EXPR counter++ VAL [counter=20, counter++=19, x1=21, x2=1, y1=19, y2=0, y3=2] [L36] COND TRUE counter++<20 [L37] CALL __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [\old(cond)=1, counter=20] [L16] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1, counter=20] [L37] RET __VERIFIER_assert(y1*x2 + y2 + y3 == x1) VAL [counter=20, x1=21, x2=1, y1=19, y2=0, y3=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=20, x1=21, x2=1, y1=19, y2=0, y3=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=20, x1=21, x2=1, y1=20, y2=0, y3=1] [L36] EXPR counter++ VAL [counter=21, counter++=20, x1=21, x2=1, y1=20, y2=0, y3=1] [L36] COND FALSE !(counter++<20) [L50] CALL __VERIFIER_assert(y1*x2 + y2 == x1) VAL [\old(cond)=0, counter=21] [L16] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, counter=21] [L18] reach_error() VAL [\old(cond)=0, cond=0, counter=21] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.6s, OverallIterations: 8, TraceHistogramMax: 21, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 262 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 260 mSDsluCounter, 747 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 570 mSDsCounter, 32 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 423 IncrementalHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 32 mSolverCounterUnsat, 177 mSDtfsCounter, 423 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 412 SyntacticMatches, 3 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=7, InterpolantAutomatonStates: 101, 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, 7 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 490 NumberOfCodeBlocks, 490 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 479 ConstructedInterpolants, 0 QuantifiedInterpolants, 1275 SizeOfPredicates, 27 NumberOfNonLiveVariables, 835 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 11 InterpolantComputations, 3 PerfectInterpolantSequences, 307/1086 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 RESULT: Ultimate proved your program to be incorrect! [2023-02-16 02:42:47,274 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE