./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i -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 e46fdb43c1704e8aa9295c108b22e9521ffebb273e9060ca31abf40569948ab2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 01:52:53,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 01:52:53,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 01:52:53,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 01:52:53,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 01:52:53,128 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 01:52:53,130 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 01:52:53,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 01:52:53,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 01:52:53,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 01:52:53,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 01:52:53,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 01:52:53,140 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 01:52:53,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 01:52:53,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 01:52:53,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 01:52:53,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 01:52:53,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 01:52:53,146 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 01:52:53,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 01:52:53,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 01:52:53,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 01:52:53,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 01:52:53,153 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 01:52:53,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 01:52:53,156 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 01:52:53,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 01:52:53,157 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 01:52:53,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 01:52:53,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 01:52:53,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 01:52:53,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 01:52:53,161 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 01:52:53,162 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 01:52:53,163 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 01:52:53,163 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 01:52:53,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 01:52:53,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 01:52:53,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 01:52:53,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 01:52:53,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 01:52:53,166 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 01:52:53,192 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 01:52:53,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 01:52:53,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 01:52:53,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 01:52:53,194 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 01:52:53,194 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 01:52:53,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 01:52:53,195 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 01:52:53,195 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 01:52:53,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 01:52:53,195 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 01:52:53,196 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 01:52:53,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 01:52:53,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 01:52:53,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 01:52:53,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 01:52:53,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 01:52:53,197 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 01:52:53,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 01:52:53,197 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 01:52:53,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 01:52:53,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 01:52:53,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 01:52:53,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 01:52:53,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:52:53,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 01:52:53,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 01:52:53,198 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 01:52:53,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 01:52:53,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 01:52:53,199 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 01:52:53,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 01:52:53,199 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 01:52:53,204 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 01:52:53,205 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 01:52:53,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e46fdb43c1704e8aa9295c108b22e9521ffebb273e9060ca31abf40569948ab2 [2023-02-16 01:52:53,347 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 01:52:53,363 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 01:52:53,365 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 01:52:53,365 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 01:52:53,366 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 01:52:53,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2023-02-16 01:52:54,309 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 01:52:54,447 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 01:52:54,447 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/divbin2_unwindbound5.i [2023-02-16 01:52:54,451 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1650a9777/fa33302f10d54ee891c8a2bdc2a15a8b/FLAG40dd8a50b [2023-02-16 01:52:54,460 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1650a9777/fa33302f10d54ee891c8a2bdc2a15a8b [2023-02-16 01:52:54,462 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 01:52:54,462 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 01:52:54,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 01:52:54,463 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 01:52:54,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 01:52:54,466 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bddbe5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54, skipping insertion in model container [2023-02-16 01:52:54,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 01:52:54,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 01:52:54,567 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/divbin2_unwindbound5.i[951,964] [2023-02-16 01:52:54,576 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:52:54,582 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 01:52:54,590 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/divbin2_unwindbound5.i[951,964] [2023-02-16 01:52:54,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 01:52:54,601 INFO L208 MainTranslator]: Completed translation [2023-02-16 01:52:54,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54 WrapperNode [2023-02-16 01:52:54,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 01:52:54,603 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 01:52:54,603 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 01:52:54,603 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 01:52:54,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,614 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,628 INFO L138 Inliner]: procedures = 16, calls = 8, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 51 [2023-02-16 01:52:54,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 01:52:54,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 01:52:54,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 01:52:54,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 01:52:54,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,655 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 01:52:54,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 01:52:54,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 01:52:54,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 01:52:54,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (1/1) ... [2023-02-16 01:52:54,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 01:52:54,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:54,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 01:52:54,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 01:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 01:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 01:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 01:52:54,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 01:52:54,721 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 01:52:54,722 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 01:52:54,770 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 01:52:54,771 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 01:52:54,897 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 01:52:54,901 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 01:52:54,901 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 01:52:54,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:52:54 BoogieIcfgContainer [2023-02-16 01:52:54,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 01:52:54,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 01:52:54,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 01:52:54,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 01:52:54,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 01:52:54" (1/3) ... [2023-02-16 01:52:54,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7025dfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:52:54, skipping insertion in model container [2023-02-16 01:52:54,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 01:52:54" (2/3) ... [2023-02-16 01:52:54,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7025dfba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 01:52:54, skipping insertion in model container [2023-02-16 01:52:54,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 01:52:54" (3/3) ... [2023-02-16 01:52:54,909 INFO L112 eAbstractionObserver]: Analyzing ICFG divbin2_unwindbound5.i [2023-02-16 01:52:54,922 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 01:52:54,922 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 01:52:54,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 01:52:54,959 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;@6598a313, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 01:52:54,959 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 01:52:54,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:52:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-16 01:52:54,981 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:54,981 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:54,982 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:54,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:54,985 INFO L85 PathProgramCache]: Analyzing trace with hash 553144752, now seen corresponding path program 1 times [2023-02-16 01:52:54,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:54,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718363654] [2023-02-16 01:52:54,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:54,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:55,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:55,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718363654] [2023-02-16 01:52:55,062 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 01:52:55,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2364517] [2023-02-16 01:52:55,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:55,063 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:55,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:55,066 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:55,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 01:52:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:55,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 01:52:55,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:55,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:52:55,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2364517] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:52:55,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:52:55,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 01:52:55,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63228744] [2023-02-16 01:52:55,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:52:55,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 01:52:55,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 01:52:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:52:55,194 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5625) internal successors, (25), 17 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:55,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:55,208 INFO L93 Difference]: Finished difference Result 37 states and 52 transitions. [2023-02-16 01:52:55,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 01:52:55,209 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-16 01:52:55,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:55,213 INFO L225 Difference]: With dead ends: 37 [2023-02-16 01:52:55,214 INFO L226 Difference]: Without dead ends: 17 [2023-02-16 01:52:55,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 01:52:55,221 INFO L413 NwaCegarLoop]: 26 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, 26 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:55,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:55,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2023-02-16 01:52:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2023-02-16 01:52:55,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:52:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2023-02-16 01:52:55,254 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2023-02-16 01:52:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:55,254 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2023-02-16 01:52:55,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2023-02-16 01:52:55,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 01:52:55,256 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:55,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:55,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 01:52:55,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-16 01:52:55,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:55,467 INFO L85 PathProgramCache]: Analyzing trace with hash -803059042, now seen corresponding path program 1 times [2023-02-16 01:52:55,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:55,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498279232] [2023-02-16 01:52:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:55,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:55,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498279232] [2023-02-16 01:52:55,486 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 01:52:55,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069946555] [2023-02-16 01:52:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:55,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:55,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:55,488 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:55,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 01:52:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:55,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-16 01:52:55,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:55,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:52:55,562 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069946555] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:52:55,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:52:55,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:52:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499438065] [2023-02-16 01:52:55,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:52:55,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 01:52:55,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 01:52:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:52:55,568 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:55,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:55,593 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2023-02-16 01:52:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 01:52:55,593 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-16 01:52:55,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:55,597 INFO L225 Difference]: With dead ends: 31 [2023-02-16 01:52:55,598 INFO L226 Difference]: Without dead ends: 19 [2023-02-16 01:52:55,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 01:52:55,599 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:55,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:55,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-16 01:52:55,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-16 01:52:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:52:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2023-02-16 01:52:55,605 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2023-02-16 01:52:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:55,606 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2023-02-16 01:52:55,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2023-02-16 01:52:55,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 01:52:55,607 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:55,607 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:55,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 01:52:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-16 01:52:55,812 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:55,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash 549278495, now seen corresponding path program 1 times [2023-02-16 01:52:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:55,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893837355] [2023-02-16 01:52:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:55,824 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:52:55,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [452511172] [2023-02-16 01:52:55,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:55,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:55,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:55,829 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:55,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 01:52:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:55,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:52:55,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:55,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:52:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:55,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893837355] [2023-02-16 01:52:55,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:52:55,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452511172] [2023-02-16 01:52:55,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452511172] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:52:55,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:52:55,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 01:52:55,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875478083] [2023-02-16 01:52:55,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:52:55,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:52:55,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:55,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:52:55,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:52:55,901 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:55,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:55,921 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2023-02-16 01:52:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:52:55,922 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-16 01:52:55,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:55,922 INFO L225 Difference]: With dead ends: 30 [2023-02-16 01:52:55,922 INFO L226 Difference]: Without dead ends: 23 [2023-02-16 01:52:55,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:52:55,925 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:55,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 56 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:55,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-02-16 01:52:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2023-02-16 01:52:55,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3888888888888888) internal successors, (25), 19 states have internal predecessors, (25), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:52:55,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2023-02-16 01:52:55,933 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 11 [2023-02-16 01:52:55,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:55,934 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2023-02-16 01:52:55,937 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:55,937 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2023-02-16 01:52:55,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 01:52:55,938 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:55,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:55,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 01:52:56,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:56,143 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:56,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:56,144 INFO L85 PathProgramCache]: Analyzing trace with hash 551065955, now seen corresponding path program 1 times [2023-02-16 01:52:56,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:56,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574988112] [2023-02-16 01:52:56,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:56,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:56,155 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:52:56,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126524352] [2023-02-16 01:52:56,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:56,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:56,155 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:56,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:56,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 01:52:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:56,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 01:52:56,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:56,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:56,278 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:52:56,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:56,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574988112] [2023-02-16 01:52:56,278 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:52:56,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126524352] [2023-02-16 01:52:56,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126524352] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:52:56,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:52:56,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 01:52:56,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512599447] [2023-02-16 01:52:56,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:52:56,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 01:52:56,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:56,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 01:52:56,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:52:56,280 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:56,332 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2023-02-16 01:52:56,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 01:52:56,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-02-16 01:52:56,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:56,334 INFO L225 Difference]: With dead ends: 31 [2023-02-16 01:52:56,334 INFO L226 Difference]: Without dead ends: 28 [2023-02-16 01:52:56,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-02-16 01:52:56,335 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:56,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 59 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:56,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-16 01:52:56,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-16 01:52:56,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:52:56,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2023-02-16 01:52:56,342 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 11 [2023-02-16 01:52:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:56,342 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2023-02-16 01:52:56,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2023-02-16 01:52:56,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-16 01:52:56,345 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:56,345 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:56,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 01:52:56,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:56,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:56,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1647533572, now seen corresponding path program 1 times [2023-02-16 01:52:56,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:56,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875224766] [2023-02-16 01:52:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:56,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:56,558 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:52:56,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [476123485] [2023-02-16 01:52:56,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:56,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:56,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:56,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:56,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 01:52:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:56,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:52:56,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:56,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:56,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:52:56,627 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:56,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:56,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875224766] [2023-02-16 01:52:56,627 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:52:56,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [476123485] [2023-02-16 01:52:56,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [476123485] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:52:56,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:52:56,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2023-02-16 01:52:56,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196057538] [2023-02-16 01:52:56,628 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:52:56,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 01:52:56,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:56,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 01:52:56,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-02-16 01:52:56,629 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:56,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:56,670 INFO L93 Difference]: Finished difference Result 62 states and 80 transitions. [2023-02-16 01:52:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-16 01:52:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-16 01:52:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:56,671 INFO L225 Difference]: With dead ends: 62 [2023-02-16 01:52:56,671 INFO L226 Difference]: Without dead ends: 50 [2023-02-16 01:52:56,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 01:52:56,672 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 38 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:56,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 107 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:56,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-02-16 01:52:56,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 36. [2023-02-16 01:52:56,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:52:56,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2023-02-16 01:52:56,680 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 13 [2023-02-16 01:52:56,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:56,680 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2023-02-16 01:52:56,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.375) internal successors, (19), 7 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:56,680 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2023-02-16 01:52:56,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 01:52:56,681 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:56,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:56,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 01:52:56,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:56,888 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:56,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:56,889 INFO L85 PathProgramCache]: Analyzing trace with hash -791761799, now seen corresponding path program 1 times [2023-02-16 01:52:56,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:56,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915352031] [2023-02-16 01:52:56,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:56,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:56,901 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:52:56,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723642411] [2023-02-16 01:52:56,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:56,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:56,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:56,919 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:56,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 01:52:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:56,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 01:52:56,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:56,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:52:57,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:57,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:57,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915352031] [2023-02-16 01:52:57,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:52:57,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723642411] [2023-02-16 01:52:57,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723642411] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:52:57,027 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:52:57,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-02-16 01:52:57,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735410223] [2023-02-16 01:52:57,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:52:57,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 01:52:57,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:57,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 01:52:57,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-02-16 01:52:57,029 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:57,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:57,086 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2023-02-16 01:52:57,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 01:52:57,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-16 01:52:57,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:57,087 INFO L225 Difference]: With dead ends: 72 [2023-02-16 01:52:57,087 INFO L226 Difference]: Without dead ends: 65 [2023-02-16 01:52:57,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2023-02-16 01:52:57,088 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:57,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 104 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:57,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2023-02-16 01:52:57,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2023-02-16 01:52:57,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 51 states have internal predecessors, (65), 7 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-02-16 01:52:57,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2023-02-16 01:52:57,094 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 14 [2023-02-16 01:52:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:57,094 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2023-02-16 01:52:57,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:57,095 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2023-02-16 01:52:57,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-02-16 01:52:57,096 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:57,096 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:57,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 01:52:57,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:57,301 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:57,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:57,301 INFO L85 PathProgramCache]: Analyzing trace with hash -789974339, now seen corresponding path program 1 times [2023-02-16 01:52:57,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:57,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268199728] [2023-02-16 01:52:57,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:57,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:57,309 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:52:57,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [481733972] [2023-02-16 01:52:57,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:57,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:57,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:57,310 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:57,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 01:52:57,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:57,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 01:52:57,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:57,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-16 01:52:57,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:52:57,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:57,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268199728] [2023-02-16 01:52:57,384 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:52:57,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481733972] [2023-02-16 01:52:57,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481733972] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:52:57,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:52:57,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 01:52:57,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442463387] [2023-02-16 01:52:57,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:52:57,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 01:52:57,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:57,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 01:52:57,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 01:52:57,385 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:57,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:57,416 INFO L93 Difference]: Finished difference Result 94 states and 119 transitions. [2023-02-16 01:52:57,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 01:52:57,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-02-16 01:52:57,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:57,417 INFO L225 Difference]: With dead ends: 94 [2023-02-16 01:52:57,417 INFO L226 Difference]: Without dead ends: 89 [2023-02-16 01:52:57,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-16 01:52:57,418 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 9 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:57,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 50 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:57,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-16 01:52:57,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 86. [2023-02-16 01:52:57,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 68 states have (on average 1.2794117647058822) internal successors, (87), 71 states have internal predecessors, (87), 10 states have call successors, (10), 7 states have call predecessors, (10), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 01:52:57,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 104 transitions. [2023-02-16 01:52:57,425 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 104 transitions. Word has length 14 [2023-02-16 01:52:57,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:57,425 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 104 transitions. [2023-02-16 01:52:57,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 01:52:57,425 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 104 transitions. [2023-02-16 01:52:57,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 01:52:57,425 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:57,425 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:57,437 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-16 01:52:57,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:57,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:57,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:57,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2118336314, now seen corresponding path program 1 times [2023-02-16 01:52:57,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:57,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502433083] [2023-02-16 01:52:57,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:57,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:57,641 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:52:57,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878744948] [2023-02-16 01:52:57,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:57,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:57,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:57,643 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 01:52:57,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 01:52:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:57,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-16 01:52:57,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:57,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 01:52:57,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:52:57,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502433083] [2023-02-16 01:52:57,706 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:52:57,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878744948] [2023-02-16 01:52:57,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878744948] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 01:52:57,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 01:52:57,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 01:52:57,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482111812] [2023-02-16 01:52:57,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 01:52:57,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 01:52:57,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:52:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 01:52:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:52:57,708 INFO L87 Difference]: Start difference. First operand 86 states and 104 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:52:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:52:57,725 INFO L93 Difference]: Finished difference Result 137 states and 164 transitions. [2023-02-16 01:52:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 01:52:57,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-02-16 01:52:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:52:57,727 INFO L225 Difference]: With dead ends: 137 [2023-02-16 01:52:57,727 INFO L226 Difference]: Without dead ends: 67 [2023-02-16 01:52:57,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 01:52:57,729 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 01:52:57,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 01:52:57,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-02-16 01:52:57,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2023-02-16 01:52:57,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 54 states have (on average 1.2592592592592593) internal successors, (68), 56 states have internal predecessors, (68), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-02-16 01:52:57,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 80 transitions. [2023-02-16 01:52:57,741 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 80 transitions. Word has length 20 [2023-02-16 01:52:57,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:52:57,742 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 80 transitions. [2023-02-16 01:52:57,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-16 01:52:57,742 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 80 transitions. [2023-02-16 01:52:57,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 01:52:57,745 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:52:57,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:52:57,752 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-16 01:52:57,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-16 01:52:57,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:52:57,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:52:57,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1149777120, now seen corresponding path program 1 times [2023-02-16 01:52:57,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:52:57,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106332752] [2023-02-16 01:52:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:57,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:52:57,981 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:52:57,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1107673673] [2023-02-16 01:52:57,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:52:57,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:52:57,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:52:57,986 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) [2023-02-16 01:52:57,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 01:52:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:52:58,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 32 conjunts are in the unsatisfiable core [2023-02-16 01:52:58,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:52:58,256 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:52:58,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:53:45,961 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (= .cse0 (mod (+ (* 2 |c_ULTIMATE.start_main_~q~0#1| .cse1) |c_ULTIMATE.start_main_~r~0#1|) 4294967296)) (not (= .cse0 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 2 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~b~0#1|)) 4294967296))) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse2)) (<= (* 2 .cse1) .cse2))) is different from true [2023-02-16 01:54:10,669 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-02-16 01:54:10,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:54:10,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106332752] [2023-02-16 01:54:10,669 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:54:10,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107673673] [2023-02-16 01:54:10,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107673673] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:54:10,669 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:54:10,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-02-16 01:54:10,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181119415] [2023-02-16 01:54:10,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:54:10,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-16 01:54:10,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:54:10,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-16 01:54:10,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=241, Unknown=1, NotChecked=32, Total=342 [2023-02-16 01:54:10,671 INFO L87 Difference]: Start difference. First operand 67 states and 80 transitions. Second operand has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:54:14,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:16,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:18,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:20,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:22,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:27,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:29,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:32,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:43,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:54:43,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 01:54:43,238 INFO L93 Difference]: Finished difference Result 122 states and 148 transitions. [2023-02-16 01:54:43,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 01:54:43,239 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-02-16 01:54:43,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 01:54:43,240 INFO L225 Difference]: With dead ends: 122 [2023-02-16 01:54:43,240 INFO L226 Difference]: Without dead ends: 87 [2023-02-16 01:54:43,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=104, Invalid=361, Unknown=1, NotChecked=40, Total=506 [2023-02-16 01:54:43,241 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 26 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 24.2s IncrementalHoareTripleChecker+Time [2023-02-16 01:54:43,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 202 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 294 Invalid, 7 Unknown, 54 Unchecked, 24.2s Time] [2023-02-16 01:54:43,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-16 01:54:43,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 78. [2023-02-16 01:54:43,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 63 states have (on average 1.1746031746031746) internal successors, (74), 65 states have internal predecessors, (74), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-16 01:54:43,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 89 transitions. [2023-02-16 01:54:43,249 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 89 transitions. Word has length 23 [2023-02-16 01:54:43,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 01:54:43,249 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 89 transitions. [2023-02-16 01:54:43,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 17 states have internal predecessors, (37), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:54:43,250 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 89 transitions. [2023-02-16 01:54:43,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 01:54:43,250 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 01:54:43,250 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 01:54:43,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 01:54:43,451 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 [2023-02-16 01:54:43,452 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 01:54:43,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 01:54:43,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1350184604, now seen corresponding path program 1 times [2023-02-16 01:54:43,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 01:54:43,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396767641] [2023-02-16 01:54:43,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:54:43,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 01:54:43,480 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 01:54:43,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1112722560] [2023-02-16 01:54:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 01:54:43,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 01:54:43,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 01:54:43,483 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) [2023-02-16 01:54:43,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 01:54:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 01:54:43,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-16 01:54:43,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 01:54:43,747 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 01:54:43,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 01:55:33,365 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) (.cse2 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (= .cse0 (mod (+ (* 2 |c_ULTIMATE.start_main_~q~0#1| .cse1) |c_ULTIMATE.start_main_~r~0#1|) 4294967296)) (not (= .cse0 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 2 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~b~0#1|)) 4294967296))) (not (<= (mod |c_ULTIMATE.start_main_~b~0#1| 4294967296) .cse2)) (<= (* 2 .cse1) .cse2))) is different from true [2023-02-16 01:56:14,441 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296)) (.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse2 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824))) (or (not (<= (* 2 (mod |c_ULTIMATE.start_main_~b~0#1| 2147483648)) .cse0)) (not (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 4 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~b~0#1|)) 4294967296))) (<= (* 4 .cse2) .cse0) (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 4 .cse2 |c_ULTIMATE.start_main_~q~0#1|)) 4294967296)))) is different from true [2023-02-16 01:56:53,117 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse2 (mod |c_ULTIMATE.start_main_~b~0#1| 536870912)) (.cse0 (mod |c_ULTIMATE.start_main_~r~0#1| 4294967296))) (or (not (<= (* 4 (mod |c_ULTIMATE.start_main_~b~0#1| 1073741824)) .cse0)) (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 8 |c_ULTIMATE.start_main_~q~0#1| .cse2)) 4294967296)) (not (= .cse1 (mod (+ |c_ULTIMATE.start_main_~r~0#1| (* 8 |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~b~0#1|)) 4294967296))) (<= (* 8 .cse2) .cse0))) is different from true [2023-02-16 01:57:17,795 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 18 not checked. [2023-02-16 01:57:17,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 01:57:17,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396767641] [2023-02-16 01:57:17,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 01:57:17,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112722560] [2023-02-16 01:57:17,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1112722560] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 01:57:17,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 01:57:17,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2023-02-16 01:57:17,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266888443] [2023-02-16 01:57:17,796 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 01:57:17,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-02-16 01:57:17,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 01:57:17,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-02-16 01:57:17,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=272, Unknown=3, NotChecked=108, Total=462 [2023-02-16 01:57:17,797 INFO L87 Difference]: Start difference. First operand 78 states and 89 transitions. Second operand has 22 states, 22 states have (on average 2.227272727272727) internal successors, (49), 20 states have internal predecessors, (49), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-16 01:57:18,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:25,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:27,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:29,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:31,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:33,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:35,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:37,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-16 01:57:39,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []