./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e8d55036 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.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 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 21:30:25,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 21:30:25,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 21:30:25,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 21:30:25,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 21:30:25,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 21:30:25,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 21:30:25,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 21:30:25,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 21:30:25,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 21:30:25,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 21:30:25,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 21:30:25,646 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 21:30:25,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 21:30:25,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 21:30:25,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 21:30:25,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 21:30:25,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 21:30:25,654 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 21:30:25,655 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 21:30:25,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 21:30:25,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 21:30:25,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 21:30:25,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 21:30:25,662 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 21:30:25,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 21:30:25,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 21:30:25,664 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 21:30:25,665 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 21:30:25,666 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 21:30:25,666 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 21:30:25,666 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 21:30:25,667 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 21:30:25,668 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 21:30:25,668 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 21:30:25,669 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 21:30:25,669 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 21:30:25,669 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 21:30:25,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 21:30:25,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 21:30:25,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 21:30:25,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-15 21:30:25,690 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 21:30:25,690 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 21:30:25,690 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 21:30:25,690 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 21:30:25,691 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 21:30:25,691 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 21:30:25,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 21:30:25,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 21:30:25,692 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 21:30:25,692 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 21:30:25,692 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 21:30:25,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-15 21:30:25,693 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 21:30:25,693 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 21:30:25,693 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 21:30:25,693 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 21:30:25,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 21:30:25,693 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 21:30:25,694 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 21:30:25,694 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 21:30:25,694 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 21:30:25,694 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 21:30:25,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 21:30:25,694 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 21:30:25,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:30:25,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 21:30:25,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 21:30:25,695 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 21:30:25,695 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-15 21:30:25,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-15 21:30:25,695 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 21:30:25,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 21:30:25,696 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 21:30:25,696 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 21:30:25,696 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 21:30:25,696 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 [2023-02-15 21:30:25,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 21:30:25,882 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 21:30:25,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 21:30:25,885 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 21:30:25,885 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 21:30:25,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2023-02-15 21:30:26,858 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 21:30:26,997 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 21:30:26,998 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2023-02-15 21:30:27,005 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882addba1/739287583dde4ef7b64c8cb574336267/FLAG049da21e7 [2023-02-15 21:30:27,014 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/882addba1/739287583dde4ef7b64c8cb574336267 [2023-02-15 21:30:27,016 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 21:30:27,017 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 21:30:27,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 21:30:27,018 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 21:30:27,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 21:30:27,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe9300a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27, skipping insertion in model container [2023-02-15 21:30:27,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,027 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 21:30:27,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:30:27,118 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/ps5-ll_valuebound100.c[458,471] [2023-02-15 21:30:27,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:30:27,133 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 21:30:27,141 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/ps5-ll_valuebound100.c[458,471] [2023-02-15 21:30:27,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:30:27,153 INFO L208 MainTranslator]: Completed translation [2023-02-15 21:30:27,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27 WrapperNode [2023-02-15 21:30:27,154 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 21:30:27,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 21:30:27,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 21:30:27,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 21:30:27,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,163 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,172 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2023-02-15 21:30:27,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 21:30:27,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 21:30:27,173 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 21:30:27,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 21:30:27,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,197 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,198 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 21:30:27,200 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 21:30:27,200 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 21:30:27,200 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 21:30:27,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (1/1) ... [2023-02-15 21:30:27,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:30:27,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:27,227 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 21:30:27,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 21:30:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 21:30:27,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 21:30:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 21:30:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-15 21:30:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 21:30:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 21:30:27,265 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 21:30:27,265 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 21:30:27,305 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 21:30:27,307 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 21:30:27,382 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 21:30:27,386 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 21:30:27,386 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 21:30:27,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:30:27 BoogieIcfgContainer [2023-02-15 21:30:27,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 21:30:27,389 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 21:30:27,389 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 21:30:27,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 21:30:27,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:30:27" (1/3) ... [2023-02-15 21:30:27,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada6f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:30:27, skipping insertion in model container [2023-02-15 21:30:27,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:30:27" (2/3) ... [2023-02-15 21:30:27,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ada6f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:30:27, skipping insertion in model container [2023-02-15 21:30:27,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:30:27" (3/3) ... [2023-02-15 21:30:27,394 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound100.c [2023-02-15 21:30:27,433 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 21:30:27,433 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 21:30:27,476 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 21:30:27,481 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;@45572b90, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 21:30:27,481 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 21:30:27,485 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:30:27,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 21:30:27,490 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:27,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:27,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:27,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:27,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2023-02-15 21:30:27,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:27,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590270691] [2023-02-15 21:30:27,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:27,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:27,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:30:27,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:27,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590270691] [2023-02-15 21:30:27,580 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-15 21:30:27,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216383098] [2023-02-15 21:30:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:27,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:27,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:27,583 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:27,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-15 21:30:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:30:27,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 21:30:27,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-15 21:30:27,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:30:27,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216383098] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:30:27,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:30:27,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 21:30:27,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791170809] [2023-02-15 21:30:27,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:30:27,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 21:30:27,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:27,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 21:30:27,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:30:27,689 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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) [2023-02-15 21:30:27,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:27,720 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2023-02-15 21:30:27,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 21:30:27,723 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 [2023-02-15 21:30:27,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:27,727 INFO L225 Difference]: With dead ends: 45 [2023-02-15 21:30:27,727 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 21:30:27,729 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 [2023-02-15 21:30:27,732 INFO L413 NwaCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:27,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:30:27,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 21:30:27,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 21:30:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 21:30:27,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 21:30:27,758 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2023-02-15 21:30:27,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:27,759 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 21:30:27,759 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) [2023-02-15 21:30:27,759 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 21:30:27,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 21:30:27,760 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:27,760 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:27,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:27,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-15 21:30:27,965 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2023-02-15 21:30:27,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:27,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235958508] [2023-02-15 21:30:27,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:27,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:27,977 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:27,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853909334] [2023-02-15 21:30:27,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:27,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:27,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:27,981 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:27,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-15 21:30:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:30:28,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-15 21:30:28,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:28,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-15 21:30:28,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:30:28,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:28,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235958508] [2023-02-15 21:30:28,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:30:28,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853909334] [2023-02-15 21:30:28,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853909334] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:30:28,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:30:28,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-15 21:30:28,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329824883] [2023-02-15 21:30:28,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:30:28,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-15 21:30:28,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:28,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-15 21:30:28,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-15 21:30:28,142 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 21:30:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:28,202 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-02-15 21:30:28,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-15 21:30:28,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2023-02-15 21:30:28,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:28,203 INFO L225 Difference]: With dead ends: 31 [2023-02-15 21:30:28,203 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 21:30:28,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 21:30:28,205 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:28,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:30:28,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 21:30:28,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-15 21:30:28,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:30:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-02-15 21:30:28,212 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2023-02-15 21:30:28,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:28,213 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-02-15 21:30:28,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 6 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 21:30:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-02-15 21:30:28,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 21:30:28,214 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:28,214 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:28,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:28,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-15 21:30:28,417 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:28,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:28,417 INFO L85 PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times [2023-02-15 21:30:28,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:28,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395145125] [2023-02-15 21:30:28,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:28,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:28,428 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:28,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706630844] [2023-02-15 21:30:28,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:28,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:28,433 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:28,434 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:28,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-15 21:30:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:30:28,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 21:30:28,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:30:28,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:30:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:30:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:28,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395145125] [2023-02-15 21:30:28,746 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:30:28,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706630844] [2023-02-15 21:30:28,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706630844] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:30:28,747 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:30:28,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2023-02-15 21:30:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271269277] [2023-02-15 21:30:28,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:30:28,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-15 21:30:28,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:28,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-15 21:30:28,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-15 21:30:28,750 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 21:30:28,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:28,831 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2023-02-15 21:30:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 21:30:28,831 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-02-15 21:30:28,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:28,833 INFO L225 Difference]: With dead ends: 38 [2023-02-15 21:30:28,833 INFO L226 Difference]: Without dead ends: 34 [2023-02-15 21:30:28,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2023-02-15 21:30:28,835 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:28,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 89 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:30:28,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-02-15 21:30:28,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2023-02-15 21:30:28,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:30:28,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-15 21:30:28,857 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-02-15 21:30:28,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:28,858 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-15 21:30:28,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-15 21:30:28,859 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-15 21:30:28,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 21:30:28,860 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:28,860 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:28,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:29,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:29,064 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:29,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:29,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2023-02-15 21:30:29,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:29,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953317296] [2023-02-15 21:30:29,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:29,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:29,076 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:29,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1194775961] [2023-02-15 21:30:29,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:29,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:29,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:29,078 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:29,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-15 21:30:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:30:29,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-15 21:30:29,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-15 21:30:29,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:30:31,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:31,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953317296] [2023-02-15 21:30:31,748 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:30:31,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194775961] [2023-02-15 21:30:31,748 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194775961] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:30:31,748 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:30:31,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2023-02-15 21:30:31,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006796821] [2023-02-15 21:30:31,749 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:30:31,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-15 21:30:31,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:31,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-15 21:30:31,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=189, Unknown=1, NotChecked=0, Total=240 [2023-02-15 21:30:31,750 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 21:30:31,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:31,893 INFO L93 Difference]: Finished difference Result 42 states and 45 transitions. [2023-02-15 21:30:31,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-15 21:30:31,894 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2023-02-15 21:30:31,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:31,894 INFO L225 Difference]: With dead ends: 42 [2023-02-15 21:30:31,895 INFO L226 Difference]: Without dead ends: 36 [2023-02-15 21:30:31,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=74, Invalid=267, Unknown=1, NotChecked=0, Total=342 [2023-02-15 21:30:31,895 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:31,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 101 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-15 21:30:31,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-15 21:30:31,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2023-02-15 21:30:31,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 24 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-02-15 21:30:31,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2023-02-15 21:30:31,902 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 36 [2023-02-15 21:30:31,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:31,902 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2023-02-15 21:30:31,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.375) internal successors, (19), 8 states have internal predecessors, (19), 5 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-02-15 21:30:31,902 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2023-02-15 21:30:31,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-15 21:30:31,903 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:31,903 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:31,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:32,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash -426505545, now seen corresponding path program 2 times [2023-02-15 21:30:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:32,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130316061] [2023-02-15 21:30:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:32,119 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:32,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1124416264] [2023-02-15 21:30:32,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:30:32,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:32,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:32,125 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:32,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-15 21:30:32,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:30:32,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:30:32,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 24 conjunts are in the unsatisfiable core [2023-02-15 21:30:32,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-02-15 21:30:32,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:30:32,546 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-15 21:30:32,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:32,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130316061] [2023-02-15 21:30:32,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:30:32,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1124416264] [2023-02-15 21:30:32,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1124416264] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:30:32,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:30:32,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 17 [2023-02-15 21:30:32,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461976287] [2023-02-15 21:30:32,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:30:32,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-15 21:30:32,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:32,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-15 21:30:32,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2023-02-15 21:30:32,548 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-02-15 21:30:32,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:32,996 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2023-02-15 21:30:32,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-15 21:30:32,997 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) Word has length 43 [2023-02-15 21:30:32,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:32,997 INFO L225 Difference]: With dead ends: 55 [2023-02-15 21:30:32,998 INFO L226 Difference]: Without dead ends: 47 [2023-02-15 21:30:32,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2023-02-15 21:30:32,998 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 19 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:32,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 209 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 21:30:32,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-15 21:30:33,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2023-02-15 21:30:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-15 21:30:33,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2023-02-15 21:30:33,009 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 43 [2023-02-15 21:30:33,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:33,010 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2023-02-15 21:30:33,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.0) internal successors, (30), 14 states have internal predecessors, (30), 9 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 9 states have call successors, (11) [2023-02-15 21:30:33,010 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2023-02-15 21:30:33,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-02-15 21:30:33,011 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:33,011 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:33,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:33,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:33,217 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:33,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:33,217 INFO L85 PathProgramCache]: Analyzing trace with hash 66449050, now seen corresponding path program 3 times [2023-02-15 21:30:33,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:33,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452602379] [2023-02-15 21:30:33,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:33,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:33,234 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:33,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1551833583] [2023-02-15 21:30:33,235 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-15 21:30:33,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:33,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:33,239 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:33,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-15 21:30:36,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-02-15 21:30:36,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:30:36,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-15 21:30:36,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-02-15 21:30:36,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:30:36,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452602379] [2023-02-15 21:30:36,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:30:36,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551833583] [2023-02-15 21:30:36,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551833583] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:30:36,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:30:36,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2023-02-15 21:30:36,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416410397] [2023-02-15 21:30:36,998 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:30:36,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-15 21:30:36,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:36,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-15 21:30:36,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2023-02-15 21:30:36,999 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-15 21:30:37,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:37,251 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2023-02-15 21:30:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-15 21:30:37,253 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) Word has length 64 [2023-02-15 21:30:37,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:37,254 INFO L225 Difference]: With dead ends: 54 [2023-02-15 21:30:37,254 INFO L226 Difference]: Without dead ends: 48 [2023-02-15 21:30:37,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:30:37,254 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 7 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:37,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 188 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 21:30:37,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-02-15 21:30:37,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-02-15 21:30:37,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 11 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-15 21:30:37,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2023-02-15 21:30:37,282 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 64 [2023-02-15 21:30:37,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:37,285 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2023-02-15 21:30:37,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 12 states have internal predecessors, (27), 8 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2023-02-15 21:30:37,286 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2023-02-15 21:30:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-15 21:30:37,290 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:37,291 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 7, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:37,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:37,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:37,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:37,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:37,501 INFO L85 PathProgramCache]: Analyzing trace with hash 357326839, now seen corresponding path program 4 times [2023-02-15 21:30:37,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:37,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761794566] [2023-02-15 21:30:37,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:37,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:37,510 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:37,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1347944526] [2023-02-15 21:30:37,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-15 21:30:37,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:37,512 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:37,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-15 21:30:37,547 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-15 21:30:37,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:30:37,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-15 21:30:37,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 16 proven. 63 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2023-02-15 21:30:37,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:30:37,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:37,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761794566] [2023-02-15 21:30:37,849 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:30:37,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347944526] [2023-02-15 21:30:37,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347944526] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:30:37,849 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:30:37,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-02-15 21:30:37,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772235453] [2023-02-15 21:30:37,849 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:30:37,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-15 21:30:37,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:37,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-15 21:30:37,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2023-02-15 21:30:37,850 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-15 21:30:38,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:38,052 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2023-02-15 21:30:38,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-15 21:30:38,052 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) Word has length 71 [2023-02-15 21:30:38,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:38,053 INFO L225 Difference]: With dead ends: 57 [2023-02-15 21:30:38,053 INFO L226 Difference]: Without dead ends: 51 [2023-02-15 21:30:38,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2023-02-15 21:30:38,054 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:38,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 266 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 21:30:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2023-02-15 21:30:38,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2023-02-15 21:30:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.0294117647058822) internal successors, (35), 34 states have internal predecessors, (35), 12 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-15 21:30:38,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2023-02-15 21:30:38,064 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 71 [2023-02-15 21:30:38,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:38,064 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2023-02-15 21:30:38,065 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 9 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2023-02-15 21:30:38,065 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2023-02-15 21:30:38,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-02-15 21:30:38,066 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:38,066 INFO L195 NwaCegarLoop]: trace histogram [10, 9, 9, 8, 8, 8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:38,075 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:38,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:38,270 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:38,271 INFO L85 PathProgramCache]: Analyzing trace with hash 416422906, now seen corresponding path program 5 times [2023-02-15 21:30:38,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:38,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646737661] [2023-02-15 21:30:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:38,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:38,278 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:38,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1953190822] [2023-02-15 21:30:38,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-15 21:30:38,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:38,281 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:38,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-15 21:30:48,526 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s) [2023-02-15 21:30:48,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:30:48,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-15 21:30:48,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:30:48,759 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 35 proven. 91 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-15 21:30:48,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:30:52,992 WARN L837 $PredicateComparison]: unable to prove that (or (not (= (mod (+ (* 10 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 15 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) (* 29 |c_ULTIMATE.start_main_~y~0#1|) (* 6 |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|)) 30) 0)) (forall ((|ULTIMATE.start_main_~k~0#1| Int)) (or (= (+ |ULTIMATE.start_main_~k~0#1| (* |ULTIMATE.start_main_~k~0#1| |c_ULTIMATE.start_main_~y~0#1|)) (+ (* 2 |c_ULTIMATE.start_main_~y~0#1|) (* |c_ULTIMATE.start_main_~y~0#1| |c_ULTIMATE.start_main_~y~0#1|) 1)) (< (+ |c_ULTIMATE.start_main_~c~0#1| 1) |ULTIMATE.start_main_~k~0#1|) (not (< |c_ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~k~0#1|))))) is different from false [2023-02-15 21:30:52,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:30:52,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646737661] [2023-02-15 21:30:52,995 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:30:52,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953190822] [2023-02-15 21:30:52,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953190822] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:30:52,995 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:30:52,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2023-02-15 21:30:52,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332619777] [2023-02-15 21:30:52,995 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:30:52,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 21:30:52,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:30:52,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 21:30:52,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=293, Unknown=1, NotChecked=34, Total=380 [2023-02-15 21:30:52,996 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-02-15 21:30:53,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:30:53,279 INFO L93 Difference]: Finished difference Result 60 states and 69 transitions. [2023-02-15 21:30:53,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-15 21:30:53,280 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) Word has length 78 [2023-02-15 21:30:53,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:30:53,281 INFO L225 Difference]: With dead ends: 60 [2023-02-15 21:30:53,281 INFO L226 Difference]: Without dead ends: 54 [2023-02-15 21:30:53,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=71, Invalid=394, Unknown=1, NotChecked=40, Total=506 [2023-02-15 21:30:53,281 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:30:53,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 267 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-15 21:30:53,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-15 21:30:53,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2023-02-15 21:30:53,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 36 states have (on average 1.0277777777777777) internal successors, (37), 36 states have internal predecessors, (37), 13 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-15 21:30:53,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2023-02-15 21:30:53,292 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 78 [2023-02-15 21:30:53,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:30:53,292 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2023-02-15 21:30:53,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 10 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2023-02-15 21:30:53,292 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2023-02-15 21:30:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-02-15 21:30:53,293 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:30:53,293 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 9, 9, 9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:30:53,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-15 21:30:53,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-15 21:30:53,502 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:30:53,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:30:53,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1706793321, now seen corresponding path program 6 times [2023-02-15 21:30:53,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:30:53,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775936012] [2023-02-15 21:30:53,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:30:53,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:30:53,516 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:30:53,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795749237] [2023-02-15 21:30:53,529 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-15 21:30:53,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:30:53,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:30:53,532 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:30:53,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-15 21:31:25,184 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-15 21:31:25,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:31:25,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 48 conjunts are in the unsatisfiable core [2023-02-15 21:31:25,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:31:25,417 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 22 proven. 133 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2023-02-15 21:31:25,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:31:25,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-15 21:31:25,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775936012] [2023-02-15 21:31:25,532 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-15 21:31:25,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795749237] [2023-02-15 21:31:25,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795749237] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-15 21:31:25,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:31:25,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2023-02-15 21:31:25,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943213526] [2023-02-15 21:31:25,532 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-15 21:31:25,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-15 21:31:25,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-15 21:31:25,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-15 21:31:25,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2023-02-15 21:31:25,534 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-02-15 21:31:25,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:31:25,899 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-02-15 21:31:25,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 21:31:25,899 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) Word has length 85 [2023-02-15 21:31:25,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:31:25,900 INFO L225 Difference]: With dead ends: 63 [2023-02-15 21:31:25,900 INFO L226 Difference]: Without dead ends: 57 [2023-02-15 21:31:25,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2023-02-15 21:31:25,901 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-15 21:31:25,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 301 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-15 21:31:25,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-02-15 21:31:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2023-02-15 21:31:25,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 14 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-15 21:31:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2023-02-15 21:31:25,911 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 85 [2023-02-15 21:31:25,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:31:25,911 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2023-02-15 21:31:25,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 15 states have internal predecessors, (33), 11 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 11 states have call predecessors, (12), 11 states have call successors, (12) [2023-02-15 21:31:25,912 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2023-02-15 21:31:25,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-02-15 21:31:25,912 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:31:25,912 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 10, 10, 10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:31:25,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-15 21:31:26,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:31:26,124 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:31:26,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:31:26,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1063034534, now seen corresponding path program 7 times [2023-02-15 21:31:26,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-15 21:31:26,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136484298] [2023-02-15 21:31:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:31:26,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-15 21:31:26,139 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-15 21:31:26,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787477574] [2023-02-15 21:31:26,143 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-15 21:31:26,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-15 21:31:26,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:31:26,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-15 21:31:26,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-15 21:32:09,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-02-15 21:32:09,557 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2023-02-15 21:32:09,557 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-02-15 21:32:09,567 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-15 21:32:09,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-15 21:32:09,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-15 21:32:09,782 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2023-02-15 21:32:09,784 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-15 21:32:09,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 09:32:09 BoogieIcfgContainer [2023-02-15 21:32:09,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-15 21:32:09,799 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-15 21:32:09,799 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-15 21:32:09,799 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-15 21:32:09,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:30:27" (3/4) ... [2023-02-15 21:32:09,801 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-15 21:32:09,801 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-15 21:32:09,802 INFO L158 Benchmark]: Toolchain (without parser) took 102785.20ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 87.8MB in the beginning and 88.2MB in the end (delta: -393.5kB). Peak memory consumption was 48.2MB. Max. memory is 16.1GB. [2023-02-15 21:32:09,803 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 98.6MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 21:32:09,803 INFO L158 Benchmark]: CACSL2BoogieTranslator took 136.47ms. Allocated memory is still 136.3MB. Free memory was 87.8MB in the beginning and 77.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 21:32:09,803 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.58ms. Allocated memory is still 136.3MB. Free memory was 77.3MB in the beginning and 75.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 21:32:09,803 INFO L158 Benchmark]: Boogie Preprocessor took 25.90ms. Allocated memory is still 136.3MB. Free memory was 75.6MB in the beginning and 74.8MB in the end (delta: 849.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-15 21:32:09,804 INFO L158 Benchmark]: RCFGBuilder took 187.96ms. Allocated memory is still 136.3MB. Free memory was 74.8MB in the beginning and 64.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-15 21:32:09,804 INFO L158 Benchmark]: TraceAbstraction took 102409.44ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 63.5MB in the beginning and 89.2MB in the end (delta: -25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2023-02-15 21:32:09,804 INFO L158 Benchmark]: Witness Printer took 2.68ms. Allocated memory is still 184.5MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-15 21:32:09,806 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 98.6MB. Free memory is still 45.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 136.47ms. Allocated memory is still 136.3MB. Free memory was 87.8MB in the beginning and 77.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.58ms. Allocated memory is still 136.3MB. Free memory was 77.3MB in the beginning and 75.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.90ms. Allocated memory is still 136.3MB. Free memory was 75.6MB in the beginning and 74.8MB in the end (delta: 849.7kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 187.96ms. Allocated memory is still 136.3MB. Free memory was 74.8MB in the beginning and 64.3MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 102409.44ms. Allocated memory was 136.3MB in the beginning and 184.5MB in the end (delta: 48.2MB). Free memory was 63.5MB in the beginning and 89.2MB in the end (delta: -25.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 2.68ms. Allocated memory is still 184.5MB. Free memory was 89.2MB in the beginning and 88.2MB in the end (delta: 1.0MB). There was no memory consumed. 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 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L18] short k; [L19] long long y, x, c; [L20] k = __VERIFIER_nondet_short() [L21] CALL assume_abort_if_not(k>=0 && k<=100) [L7] COND FALSE !(!cond) [L21] RET assume_abort_if_not(k>=0 && k<=100) [L22] CALL assume_abort_if_not(k <= 256) [L7] COND FALSE !(!cond) [L22] RET assume_abort_if_not(k <= 256) [L24] y = 0 [L25] x = 0 [L26] c = 0 [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND FALSE !(!(c < k)) [L34] c = c + 1 [L35] y = y + 1 [L36] x = y * y * y * y + x [L28] COND TRUE 1 [L29] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L29] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L31] COND TRUE !(c < k) [L39] CALL __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L10] COND FALSE !(!(cond)) [L39] RET __VERIFIER_assert(6*y*y*y*y*y + 15*y*y*y*y + 10*y*y*y - 30*x - y == 0) [L40] CALL __VERIFIER_assert(k*y == y*y) [L10] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 102.3s, OverallIterations: 10, TraceHistogramMax: 12, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 84 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 78 mSDsluCounter, 1525 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1283 mSDsCounter, 43 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2040 IncrementalHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 43 mSolverCounterUnsat, 242 mSDtfsCounter, 2040 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 612 GetRequests, 473 SyntacticMatches, 3 SemanticMatches, 136 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=9, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 7 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 88.8s SatisfiabilityAnalysisTime, 8.8s InterpolantComputationTime, 548 NumberOfCodeBlocks, 536 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 495 ConstructedInterpolants, 0 QuantifiedInterpolants, 1797 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1108 ConjunctsInSsa, 247 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 675/1043 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 could not prove your program: unable to determine feasibility of some traces [2023-02-15 21:32:09,823 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/ps5-ll_valuebound100.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.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 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 --- Real Ultimate output --- This is Ultimate 0.2.2-?-e8d5503-m [2023-02-15 21:32:11,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-15 21:32:11,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-15 21:32:11,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-15 21:32:11,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-15 21:32:11,483 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-15 21:32:11,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-15 21:32:11,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-15 21:32:11,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-15 21:32:11,487 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-15 21:32:11,488 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-15 21:32:11,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-15 21:32:11,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-15 21:32:11,489 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-15 21:32:11,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-15 21:32:11,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-15 21:32:11,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-15 21:32:11,492 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-15 21:32:11,493 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-15 21:32:11,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-15 21:32:11,495 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-15 21:32:11,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-15 21:32:11,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-15 21:32:11,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-15 21:32:11,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-15 21:32:11,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-15 21:32:11,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-15 21:32:11,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-15 21:32:11,512 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-15 21:32:11,512 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-15 21:32:11,513 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-15 21:32:11,513 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-15 21:32:11,514 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-15 21:32:11,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-15 21:32:11,515 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-15 21:32:11,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-15 21:32:11,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-15 21:32:11,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-15 21:32:11,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-15 21:32:11,517 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-15 21:32:11,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-15 21:32:11,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-15 21:32:11,551 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-15 21:32:11,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-15 21:32:11,557 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-15 21:32:11,557 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-15 21:32:11,558 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-15 21:32:11,558 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-15 21:32:11,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-15 21:32:11,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-15 21:32:11,559 INFO L138 SettingsManager]: * Use SBE=true [2023-02-15 21:32:11,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-15 21:32:11,560 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-15 21:32:11,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-15 21:32:11,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-15 21:32:11,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-15 21:32:11,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-15 21:32:11,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-15 21:32:11,561 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-15 21:32:11,561 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-15 21:32:11,561 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-15 21:32:11,561 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-15 21:32:11,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-15 21:32:11,562 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-15 21:32:11,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-15 21:32:11,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-15 21:32:11,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-15 21:32:11,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-15 21:32:11,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:32:11,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-15 21:32:11,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-15 21:32:11,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-15 21:32:11,563 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-15 21:32:11,563 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-15 21:32:11,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-15 21:32:11,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-15 21:32:11,563 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-15 21:32:11,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-15 21:32:11,564 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-15 21:32:11,564 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-15 21:32:11,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2436c69c19f049d89ef519f7bd9d4cf3f7b648737fca21472b0299c532d84f11 [2023-02-15 21:32:11,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-15 21:32:11,833 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-15 21:32:11,835 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-15 21:32:11,836 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-15 21:32:11,836 INFO L275 PluginConnector]: CDTParser initialized [2023-02-15 21:32:11,837 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2023-02-15 21:32:12,821 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-15 21:32:12,946 INFO L351 CDTParser]: Found 1 translation units. [2023-02-15 21:32:12,946 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/ps5-ll_valuebound100.c [2023-02-15 21:32:12,950 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818c04a22/c594b831f0414ac1b1bb8f895b4ac23f/FLAG441f56e63 [2023-02-15 21:32:12,965 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/818c04a22/c594b831f0414ac1b1bb8f895b4ac23f [2023-02-15 21:32:12,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-15 21:32:12,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-15 21:32:12,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-15 21:32:12,970 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-15 21:32:12,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-15 21:32:12,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:32:12" (1/1) ... [2023-02-15 21:32:12,974 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fc343d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:12, skipping insertion in model container [2023-02-15 21:32:12,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 09:32:12" (1/1) ... [2023-02-15 21:32:12,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-15 21:32:12,994 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-15 21:32:13,115 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/ps5-ll_valuebound100.c[458,471] [2023-02-15 21:32:13,134 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:32:13,143 INFO L203 MainTranslator]: Completed pre-run [2023-02-15 21:32:13,153 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/ps5-ll_valuebound100.c[458,471] [2023-02-15 21:32:13,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-15 21:32:13,180 INFO L208 MainTranslator]: Completed translation [2023-02-15 21:32:13,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13 WrapperNode [2023-02-15 21:32:13,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-15 21:32:13,184 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-15 21:32:13,184 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-15 21:32:13,184 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-15 21:32:13,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,208 INFO L138 Inliner]: procedures = 14, calls = 12, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 35 [2023-02-15 21:32:13,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-15 21:32:13,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-15 21:32:13,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-15 21:32:13,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-15 21:32:13,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,241 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-15 21:32:13,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-15 21:32:13,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-15 21:32:13,245 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-15 21:32:13,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (1/1) ... [2023-02-15 21:32:13,249 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-15 21:32:13,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-15 21:32:13,266 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-15 21:32:13,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-15 21:32:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-15 21:32:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-15 21:32:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-15 21:32:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-15 21:32:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-15 21:32:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-15 21:32:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-15 21:32:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-15 21:32:13,349 INFO L235 CfgBuilder]: Building ICFG [2023-02-15 21:32:13,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-15 21:32:13,651 INFO L276 CfgBuilder]: Performing block encoding [2023-02-15 21:32:13,655 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-15 21:32:13,655 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-15 21:32:13,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:32:13 BoogieIcfgContainer [2023-02-15 21:32:13,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-15 21:32:13,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-15 21:32:13,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-15 21:32:13,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-15 21:32:13,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 09:32:12" (1/3) ... [2023-02-15 21:32:13,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbd14d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:32:13, skipping insertion in model container [2023-02-15 21:32:13,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 09:32:13" (2/3) ... [2023-02-15 21:32:13,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bbd14d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 09:32:13, skipping insertion in model container [2023-02-15 21:32:13,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 09:32:13" (3/3) ... [2023-02-15 21:32:13,662 INFO L112 eAbstractionObserver]: Analyzing ICFG ps5-ll_valuebound100.c [2023-02-15 21:32:13,686 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-15 21:32:13,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-15 21:32:13,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-15 21:32:13,742 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;@76a189ea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-15 21:32:13,743 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-15 21:32:13,745 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:32:13,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 21:32:13,751 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:32:13,752 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:32:13,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:32:13,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:32:13,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1845349065, now seen corresponding path program 1 times [2023-02-15 21:32:13,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:32:13,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [302510] [2023-02-15 21:32:13,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:32:13,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:32:13,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:32:13,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:32:13,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-15 21:32:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:32:13,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-15 21:32:13,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:32:13,958 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:32:13,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:32:13,959 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:32:13,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [302510] [2023-02-15 21:32:13,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [302510] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:32:13,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:32:13,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-15 21:32:13,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472123940] [2023-02-15 21:32:13,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:32:13,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-15 21:32:13,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:32:13,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-15 21:32:13,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-15 21:32:13,994 INFO L87 Difference]: Start difference. First operand has 24 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 21:32:14,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:32:14,049 INFO L93 Difference]: Finished difference Result 45 states and 63 transitions. [2023-02-15 21:32:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-15 21:32:14,051 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 18 [2023-02-15 21:32:14,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:32:14,057 INFO L225 Difference]: With dead ends: 45 [2023-02-15 21:32:14,057 INFO L226 Difference]: Without dead ends: 20 [2023-02-15 21:32:14,060 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 [2023-02-15 21:32:14,064 INFO L413 NwaCegarLoop]: 27 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, 27 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:32:14,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-15 21:32:14,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-15 21:32:14,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-15 21:32:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-15 21:32:14,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-02-15 21:32:14,094 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 18 [2023-02-15 21:32:14,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:32:14,095 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-02-15 21:32:14,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 21:32:14,095 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-02-15 21:32:14,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-15 21:32:14,097 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:32:14,097 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:32:14,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-15 21:32:14,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:32:14,312 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:32:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:32:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1506842435, now seen corresponding path program 1 times [2023-02-15 21:32:14,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:32:14,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1446887350] [2023-02-15 21:32:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:32:14,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:32:14,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:32:14,315 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:32:14,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-15 21:32:14,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:32:14,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-15 21:32:14,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:32:14,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:32:14,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-15 21:32:14,598 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:32:14,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1446887350] [2023-02-15 21:32:14,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1446887350] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-15 21:32:14,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-15 21:32:14,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-15 21:32:14,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965278354] [2023-02-15 21:32:14,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:32:14,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:32:14,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:32:14,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:32:14,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-15 21:32:14,601 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 21:32:16,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:32:16,656 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2023-02-15 21:32:16,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-15 21:32:16,667 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 18 [2023-02-15 21:32:16,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:32:16,668 INFO L225 Difference]: With dead ends: 31 [2023-02-15 21:32:16,668 INFO L226 Difference]: Without dead ends: 27 [2023-02-15 21:32:16,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-15 21:32:16,669 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 6 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-02-15 21:32:16,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 69 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-02-15 21:32:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2023-02-15 21:32:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2023-02-15 21:32:16,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 18 states have internal predecessors, (19), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:32:16,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2023-02-15 21:32:16,676 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 18 [2023-02-15 21:32:16,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:32:16,677 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2023-02-15 21:32:16,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-15 21:32:16,677 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2023-02-15 21:32:16,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-15 21:32:16,677 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:32:16,678 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:32:16,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-15 21:32:16,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:32:16,890 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:32:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:32:16,891 INFO L85 PathProgramCache]: Analyzing trace with hash 903983968, now seen corresponding path program 1 times [2023-02-15 21:32:16,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:32:16,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [125116009] [2023-02-15 21:32:16,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:32:16,891 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:32:16,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:32:16,893 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:32:16,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-15 21:32:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:32:17,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-15 21:32:17,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:32:19,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-02-15 21:32:19,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:32:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-02-15 21:32:37,140 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:32:37,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [125116009] [2023-02-15 21:32:37,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [125116009] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-15 21:32:37,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-15 21:32:37,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2023-02-15 21:32:37,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262390069] [2023-02-15 21:32:37,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-15 21:32:37,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-15 21:32:37,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:32:37,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-15 21:32:37,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-15 21:32:37,142 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 21:32:43,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 21:32:46,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 21:32:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:32:46,486 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2023-02-15 21:32:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-15 21:32:46,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2023-02-15 21:32:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:32:46,487 INFO L225 Difference]: With dead ends: 33 [2023-02-15 21:32:46,487 INFO L226 Difference]: Without dead ends: 29 [2023-02-15 21:32:46,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-02-15 21:32:46,488 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 7 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2023-02-15 21:32:46,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 58 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2023-02-15 21:32:46,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-15 21:32:46,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-15 21:32:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-15 21:32:46,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2023-02-15 21:32:46,500 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 25 [2023-02-15 21:32:46,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:32:46,501 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2023-02-15 21:32:46,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-15 21:32:46,501 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2023-02-15 21:32:46,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-02-15 21:32:46,504 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:32:46,504 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:32:46,524 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-15 21:32:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:32:46,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:32:46,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:32:46,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1648043046, now seen corresponding path program 1 times [2023-02-15 21:32:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:32:46,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420816124] [2023-02-15 21:32:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-15 21:32:46,722 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:32:46,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:32:46,726 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:32:46,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-15 21:32:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-15 21:32:47,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2023-02-15 21:32:47,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:32:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-15 21:32:47,988 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:33:01,579 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-15 21:33:01,580 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:33:01,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420816124] [2023-02-15 21:33:01,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420816124] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:33:01,580 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:33:01,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 15 [2023-02-15 21:33:01,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109510437] [2023-02-15 21:33:01,580 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:33:01,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-15 21:33:01,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:33:01,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-15 21:33:01,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-15 21:33:01,582 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-15 21:33:24,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-15 21:33:24,418 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2023-02-15 21:33:24,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-15 21:33:24,419 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) Word has length 36 [2023-02-15 21:33:24,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-15 21:33:24,420 INFO L225 Difference]: With dead ends: 48 [2023-02-15 21:33:24,420 INFO L226 Difference]: Without dead ends: 40 [2023-02-15 21:33:24,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-02-15 21:33:24,421 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 17 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2023-02-15 21:33:24,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 176 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 10.2s Time] [2023-02-15 21:33:24,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-15 21:33:24,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2023-02-15 21:33:24,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.04) internal successors, (26), 25 states have internal predecessors, (26), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-15 21:33:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2023-02-15 21:33:24,431 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 36 [2023-02-15 21:33:24,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-15 21:33:24,432 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2023-02-15 21:33:24,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.0) internal successors, (26), 12 states have internal predecessors, (26), 8 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2023-02-15 21:33:24,432 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2023-02-15 21:33:24,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-02-15 21:33:24,433 INFO L187 NwaCegarLoop]: Found error trace [2023-02-15 21:33:24,433 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 5, 5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-15 21:33:24,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-15 21:33:24,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:33:24,651 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-15 21:33:24,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-15 21:33:24,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1013596503, now seen corresponding path program 2 times [2023-02-15 21:33:24,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-15 21:33:24,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1208213829] [2023-02-15 21:33:24,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-15 21:33:24,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-15 21:33:24,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-15 21:33:24,653 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-15 21:33:24,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-15 21:33:25,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-15 21:33:25,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-15 21:33:25,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-15 21:33:25,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-15 21:33:27,061 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 33 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-02-15 21:33:27,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-15 21:33:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-15 21:33:55,857 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-15 21:33:55,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1208213829] [2023-02-15 21:33:55,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1208213829] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-15 21:33:55,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-15 21:33:55,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2023-02-15 21:33:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955092681] [2023-02-15 21:33:55,858 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-15 21:33:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-02-15 21:33:55,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-15 21:33:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-02-15 21:33:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-02-15 21:33:55,860 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand has 21 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 14 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2023-02-15 21:34:33,245 WARN L233 SmtUtils]: Spent 5.74s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-15 21:34:47,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-15 21:35:03,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []