./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1aca3c96522e618238f11f200c96e0ec490e756d4e04895bd2a51f9a4ff85af1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:05:55,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:05:55,161 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:05:55,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:05:55,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:05:55,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:05:55,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:05:55,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:05:55,189 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:05:55,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:05:55,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:05:55,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:05:55,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:05:55,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:05:55,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:05:55,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:05:55,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:05:55,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:05:55,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:05:55,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:05:55,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:05:55,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:05:55,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:05:55,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:05:55,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:05:55,214 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:05:55,214 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:05:55,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:05:55,215 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:05:55,216 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:05:55,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:05:55,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:05:55,218 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:05:55,219 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:05:55,220 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:05:55,221 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:05:55,221 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:05:55,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:05:55,222 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:05:55,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:05:55,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:05:55,224 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-16 02:05:55,238 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:05:55,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:05:55,238 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:05:55,238 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:05:55,239 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:05:55,239 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:05:55,240 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:05:55,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:05:55,240 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:05:55,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:05:55,241 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:05:55,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 02:05:55,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:05:55,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:05:55,241 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:05:55,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:05:55,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:05:55,242 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:05:55,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:05:55,242 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:05:55,242 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:05:55,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:05:55,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:05:55,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:05:55,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:05:55,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:05:55,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:05:55,244 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:05:55,244 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 02:05:55,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 02:05:55,244 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:05:55,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:05:55,245 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:05:55,245 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:05:55,245 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:05:55,245 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1aca3c96522e618238f11f200c96e0ec490e756d4e04895bd2a51f9a4ff85af1 [2023-02-16 02:05:55,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:05:55,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:05:55,463 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:05:55,464 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:05:55,464 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:05:55,465 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound5.c [2023-02-16 02:05:56,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:05:56,615 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:05:56,616 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound5.c [2023-02-16 02:05:56,621 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d464e52bc/c8a69640df3e42528cc9cf792fa9cb77/FLAGa16c9a8c9 [2023-02-16 02:05:56,634 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d464e52bc/c8a69640df3e42528cc9cf792fa9cb77 [2023-02-16 02:05:56,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:05:56,637 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:05:56,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:05:56,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:05:56,641 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:05:56,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,644 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f68a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56, skipping insertion in model container [2023-02-16 02:05:56,644 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:05:56,661 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:05:56,778 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/egcd3-ll_valuebound5.c[490,503] [2023-02-16 02:05:56,802 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:05:56,814 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:05:56,823 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/egcd3-ll_valuebound5.c[490,503] [2023-02-16 02:05:56,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:05:56,852 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:05:56,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56 WrapperNode [2023-02-16 02:05:56,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:05:56,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:05:56,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:05:56,854 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:05:56,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,875 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2023-02-16 02:05:56,875 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:05:56,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:05:56,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:05:56,876 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:05:56,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,891 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,902 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,904 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,905 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:05:56,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:05:56,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:05:56,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:05:56,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (1/1) ... [2023-02-16 02:05:56,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:05:56,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:05:56,940 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 02:05:56,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 02:05:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:05:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 02:05:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 02:05:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 02:05:56,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:05:56,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:05:56,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:05:56,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:05:57,015 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:05:57,017 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:05:57,131 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:05:57,135 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:05:57,136 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-16 02:05:57,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:05:57 BoogieIcfgContainer [2023-02-16 02:05:57,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:05:57,140 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:05:57,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:05:57,143 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:05:57,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:05:56" (1/3) ... [2023-02-16 02:05:57,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e08da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:05:57, skipping insertion in model container [2023-02-16 02:05:57,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:05:56" (2/3) ... [2023-02-16 02:05:57,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e08da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:05:57, skipping insertion in model container [2023-02-16 02:05:57,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:05:57" (3/3) ... [2023-02-16 02:05:57,145 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound5.c [2023-02-16 02:05:57,156 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:05:57,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:05:57,198 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:05:57,203 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;@3dd47009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:05:57,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:05:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:05:57,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 02:05:57,211 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:05:57,211 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:05:57,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:05:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:05:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2023-02-16 02:05:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:05:57,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53826255] [2023-02-16 02:05:57,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:57,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:05:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:05:57,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:05:57,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53826255] [2023-02-16 02:05:57,334 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-16 02:05:57,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [5717238] [2023-02-16 02:05:57,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:57,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:57,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:05:57,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:05:57,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 02:05:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:05:57,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:05:57,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:05:57,489 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-16 02:05:57,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:05:57,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [5717238] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:05:57,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:05:57,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:05:57,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035985962] [2023-02-16 02:05:57,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:05:57,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:05:57,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:05:57,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:05:57,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:05:57,552 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 02:05:57,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:05:57,574 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-02-16 02:05:57,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:05:57,576 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-16 02:05:57,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:05:57,581 INFO L225 Difference]: With dead ends: 67 [2023-02-16 02:05:57,581 INFO L226 Difference]: Without dead ends: 31 [2023-02-16 02:05:57,585 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:05:57,589 INFO L413 NwaCegarLoop]: 44 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, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:05:57,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:05:57,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-16 02:05:57,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-16 02:05:57,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:05:57,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-02-16 02:05:57,626 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2023-02-16 02:05:57,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:05:57,626 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-02-16 02:05:57,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 02:05:57,626 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-02-16 02:05:57,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 02:05:57,627 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:05:57,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:05:57,632 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 02:05:57,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-16 02:05:57,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:05:57,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:05:57,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2023-02-16 02:05:57,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:05:57,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555305279] [2023-02-16 02:05:57,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:57,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:05:57,849 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:05:57,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1922859152] [2023-02-16 02:05:57,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:57,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:57,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:05:57,854 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:05:57,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 02:05:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:05:57,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 02:05:57,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:05:57,988 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:05:57,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:05:57,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:05:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555305279] [2023-02-16 02:05:57,989 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:05:57,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922859152] [2023-02-16 02:05:57,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922859152] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:05:57,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:05:57,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-16 02:05:57,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093678674] [2023-02-16 02:05:57,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:05:57,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:05:57,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:05:57,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:05:57,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-16 02:05:57,992 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:05:58,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:05:58,098 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2023-02-16 02:05:58,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:05:58,100 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-02-16 02:05:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:05:58,100 INFO L225 Difference]: With dead ends: 50 [2023-02-16 02:05:58,101 INFO L226 Difference]: Without dead ends: 43 [2023-02-16 02:05:58,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:05:58,102 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 32 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:05:58,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 113 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:05:58,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2023-02-16 02:05:58,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2023-02-16 02:05:58,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:05:58,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-16 02:05:58,108 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2023-02-16 02:05:58,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:05:58,108 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-16 02:05:58,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:05:58,109 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-16 02:05:58,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 02:05:58,109 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:05:58,109 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:05:58,119 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-16 02:05:58,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-16 02:05:58,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:05:58,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:05:58,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2023-02-16 02:05:58,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:05:58,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843895200] [2023-02-16 02:05:58,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:58,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:05:58,334 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:05:58,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126636773] [2023-02-16 02:05:58,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:58,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:58,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:05:58,337 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:05:58,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 02:05:58,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:05:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 02:05:58,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:05:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:05:58,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:05:58,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:05:58,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843895200] [2023-02-16 02:05:58,472 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:05:58,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126636773] [2023-02-16 02:05:58,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126636773] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:05:58,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:05:58,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-02-16 02:05:58,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439113370] [2023-02-16 02:05:58,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:05:58,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 02:05:58,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:05:58,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 02:05:58,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-16 02:05:58,474 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:05:58,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:05:58,573 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-02-16 02:05:58,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 02:05:58,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2023-02-16 02:05:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:05:58,577 INFO L225 Difference]: With dead ends: 49 [2023-02-16 02:05:58,577 INFO L226 Difference]: Without dead ends: 47 [2023-02-16 02:05:58,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 02:05:58,580 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 23 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:05:58,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:05:58,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-16 02:05:58,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-16 02:05:58,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:05:58,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-02-16 02:05:58,598 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2023-02-16 02:05:58,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:05:58,598 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-02-16 02:05:58,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:05:58,599 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-02-16 02:05:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 02:05:58,600 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:05:58,600 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:05:58,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:05:58,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:58,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:05:58,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:05:58,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2023-02-16 02:05:58,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:05:58,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874570738] [2023-02-16 02:05:58,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:58,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:05:58,819 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:05:58,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1138308762] [2023-02-16 02:05:58,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:58,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:05:58,834 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:05:58,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 02:05:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:05:58,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-16 02:05:58,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:05:58,922 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:05:58,922 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:05:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:05:59,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:05:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874570738] [2023-02-16 02:05:59,016 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:05:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1138308762] [2023-02-16 02:05:59,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1138308762] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:05:59,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:05:59,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2023-02-16 02:05:59,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869539241] [2023-02-16 02:05:59,017 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:05:59,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-02-16 02:05:59,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:05:59,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-02-16 02:05:59,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-02-16 02:05:59,019 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 02:05:59,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:05:59,182 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2023-02-16 02:05:59,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 02:05:59,183 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2023-02-16 02:05:59,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:05:59,184 INFO L225 Difference]: With dead ends: 99 [2023-02-16 02:05:59,184 INFO L226 Difference]: Without dead ends: 92 [2023-02-16 02:05:59,184 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:05:59,185 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 61 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:05:59,185 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 242 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:05:59,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-16 02:05:59,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2023-02-16 02:05:59,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-16 02:05:59,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2023-02-16 02:05:59,195 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2023-02-16 02:05:59,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:05:59,195 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2023-02-16 02:05:59,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-16 02:05:59,196 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2023-02-16 02:05:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 02:05:59,196 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:05:59,196 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:05:59,207 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 02:05:59,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:59,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:05:59,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:05:59,408 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2023-02-16 02:05:59,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:05:59,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500837167] [2023-02-16 02:05:59,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:59,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:05:59,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:05:59,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [993138859] [2023-02-16 02:05:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:59,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:59,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:05:59,420 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:05:59,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 02:05:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:05:59,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 17 conjunts are in the unsatisfiable core [2023-02-16 02:05:59,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:05:59,542 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:05:59,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:05:59,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:05:59,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500837167] [2023-02-16 02:05:59,632 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:05:59,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993138859] [2023-02-16 02:05:59,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993138859] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 02:05:59,632 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:05:59,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-16 02:05:59,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031731772] [2023-02-16 02:05:59,632 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 02:05:59,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 02:05:59,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:05:59,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 02:05:59,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 02:05:59,635 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 02:05:59,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:05:59,717 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2023-02-16 02:05:59,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 02:05:59,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-02-16 02:05:59,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:05:59,718 INFO L225 Difference]: With dead ends: 75 [2023-02-16 02:05:59,718 INFO L226 Difference]: Without dead ends: 73 [2023-02-16 02:05:59,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:05:59,719 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 13 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:05:59,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 145 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:05:59,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-02-16 02:05:59,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2023-02-16 02:05:59,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-16 02:05:59,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2023-02-16 02:05:59,729 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2023-02-16 02:05:59,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:05:59,730 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2023-02-16 02:05:59,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 02:05:59,730 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2023-02-16 02:05:59,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 02:05:59,731 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:05:59,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:05:59,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 02:05:59,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:59,934 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:05:59,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:05:59,934 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2023-02-16 02:05:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:05:59,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543236845] [2023-02-16 02:05:59,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:59,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:05:59,945 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:05:59,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1976557170] [2023-02-16 02:05:59,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:05:59,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:05:59,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:05:59,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:05:59,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 02:06:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:00,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-16 02:06:00,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:00,234 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 02:06:00,234 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:06:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:06:00,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543236845] [2023-02-16 02:06:00,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:06:00,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976557170] [2023-02-16 02:06:00,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976557170] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:06:00,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:06:00,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 18 [2023-02-16 02:06:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389988158] [2023-02-16 02:06:00,383 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:06:00,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-02-16 02:06:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:06:00,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-02-16 02:06:00,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-02-16 02:06:00,386 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-16 02:06:00,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:00,770 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2023-02-16 02:06:00,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 02:06:00,770 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 38 [2023-02-16 02:06:00,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:00,771 INFO L225 Difference]: With dead ends: 114 [2023-02-16 02:06:00,771 INFO L226 Difference]: Without dead ends: 112 [2023-02-16 02:06:00,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-02-16 02:06:00,772 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 96 mSDsluCounter, 267 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:00,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 312 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 02:06:00,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-16 02:06:00,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 101. [2023-02-16 02:06:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 70 states have (on average 1.2571428571428571) internal successors, (88), 71 states have internal predecessors, (88), 25 states have call successors, (25), 5 states have call predecessors, (25), 5 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-16 02:06:00,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 137 transitions. [2023-02-16 02:06:00,787 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 137 transitions. Word has length 38 [2023-02-16 02:06:00,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:00,787 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 137 transitions. [2023-02-16 02:06:00,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.0555555555555554) internal successors, (37), 15 states have internal predecessors, (37), 4 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-02-16 02:06:00,787 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 137 transitions. [2023-02-16 02:06:00,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 02:06:00,788 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:00,788 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:00,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-16 02:06:00,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:00,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:00,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:00,998 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2023-02-16 02:06:00,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:06:00,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603882692] [2023-02-16 02:06:00,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:00,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:06:01,012 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:06:01,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [489546985] [2023-02-16 02:06:01,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:01,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:01,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:01,017 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:06:01,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 02:06:01,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:01,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-16 02:06:01,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:01,176 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-02-16 02:06:01,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:03,930 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-16 02:06:03,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:06:03,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603882692] [2023-02-16 02:06:03,930 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:06:03,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489546985] [2023-02-16 02:06:03,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489546985] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 02:06:03,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:06:03,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 15 [2023-02-16 02:06:03,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121094620] [2023-02-16 02:06:03,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:06:03,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:06:03,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:06:03,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:06:03,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=171, Unknown=1, NotChecked=0, Total=210 [2023-02-16 02:06:03,932 INFO L87 Difference]: Start difference. First operand 101 states and 137 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 02:06:04,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:04,016 INFO L93 Difference]: Finished difference Result 147 states and 209 transitions. [2023-02-16 02:06:04,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:06:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-02-16 02:06:04,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:04,018 INFO L225 Difference]: With dead ends: 147 [2023-02-16 02:06:04,018 INFO L226 Difference]: Without dead ends: 145 [2023-02-16 02:06:04,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=42, Invalid=197, Unknown=1, NotChecked=0, Total=240 [2023-02-16 02:06:04,019 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:04,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 150 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 02:06:04,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-02-16 02:06:04,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139. [2023-02-16 02:06:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 87 states have (on average 1.2873563218390804) internal successors, (112), 88 states have internal predecessors, (112), 45 states have call successors, (45), 6 states have call predecessors, (45), 6 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2023-02-16 02:06:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 201 transitions. [2023-02-16 02:06:04,054 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 201 transitions. Word has length 43 [2023-02-16 02:06:04,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:04,055 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 201 transitions. [2023-02-16 02:06:04,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 02:06:04,055 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 201 transitions. [2023-02-16 02:06:04,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 02:06:04,059 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:04,060 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:04,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:06:04,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:04,265 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:04,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:04,265 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2023-02-16 02:06:04,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:06:04,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973055935] [2023-02-16 02:06:04,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:04,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:06:04,273 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:06:04,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [963716753] [2023-02-16 02:06:04,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:04,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:04,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:04,280 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:06:04,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 02:06:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:04,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-16 02:06:04,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:04,432 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:06:04,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:04,543 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:06:04,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:06:04,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973055935] [2023-02-16 02:06:04,543 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:06:04,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [963716753] [2023-02-16 02:06:04,544 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [963716753] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:06:04,544 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:06:04,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2023-02-16 02:06:04,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833956798] [2023-02-16 02:06:04,544 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:06:04,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 02:06:04,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:06:04,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 02:06:04,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-02-16 02:06:04,546 INFO L87 Difference]: Start difference. First operand 139 states and 201 transitions. Second operand has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:06:05,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:05,230 INFO L93 Difference]: Finished difference Result 198 states and 280 transitions. [2023-02-16 02:06:05,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 02:06:05,231 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 43 [2023-02-16 02:06:05,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:05,233 INFO L225 Difference]: With dead ends: 198 [2023-02-16 02:06:05,233 INFO L226 Difference]: Without dead ends: 196 [2023-02-16 02:06:05,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2023-02-16 02:06:05,234 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 101 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:05,234 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 169 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 02:06:05,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-02-16 02:06:05,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 187. [2023-02-16 02:06:05,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 117 states have (on average 1.264957264957265) internal successors, (148), 123 states have internal predecessors, (148), 61 states have call successors, (61), 8 states have call predecessors, (61), 8 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2023-02-16 02:06:05,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 269 transitions. [2023-02-16 02:06:05,288 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 269 transitions. Word has length 43 [2023-02-16 02:06:05,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:05,288 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 269 transitions. [2023-02-16 02:06:05,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.0) internal successors, (39), 12 states have internal predecessors, (39), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 02:06:05,289 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 269 transitions. [2023-02-16 02:06:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-02-16 02:06:05,290 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:05,290 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:05,295 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 02:06:05,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-02-16 02:06:05,495 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:05,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:05,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2023-02-16 02:06:05,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:06:05,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319118269] [2023-02-16 02:06:05,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:05,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:06:05,503 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:06:05,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314665418] [2023-02-16 02:06:05,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:05,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:05,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:05,510 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 02:06:05,520 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 02:06:05,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:05,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 02:06:05,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:05,602 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 02:06:05,603 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:05,661 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-02-16 02:06:05,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:06:05,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319118269] [2023-02-16 02:06:05,662 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:06:05,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314665418] [2023-02-16 02:06:05,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314665418] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 02:06:05,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:06:05,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2023-02-16 02:06:05,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360769038] [2023-02-16 02:06:05,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:06:05,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:06:05,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:06:05,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:06:05,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-02-16 02:06:05,666 INFO L87 Difference]: Start difference. First operand 187 states and 269 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 02:06:05,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:05,733 INFO L93 Difference]: Finished difference Result 194 states and 275 transitions. [2023-02-16 02:06:05,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:06:05,734 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2023-02-16 02:06:05,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:05,736 INFO L225 Difference]: With dead ends: 194 [2023-02-16 02:06:05,736 INFO L226 Difference]: Without dead ends: 192 [2023-02-16 02:06:05,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 02:06:05,738 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 8 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:05,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 122 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:06:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2023-02-16 02:06:05,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 191. [2023-02-16 02:06:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 120 states have (on average 1.2583333333333333) internal successors, (151), 126 states have internal predecessors, (151), 61 states have call successors, (61), 9 states have call predecessors, (61), 9 states have return successors, (60), 55 states have call predecessors, (60), 60 states have call successors, (60) [2023-02-16 02:06:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 272 transitions. [2023-02-16 02:06:05,779 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 272 transitions. Word has length 48 [2023-02-16 02:06:05,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:05,779 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 272 transitions. [2023-02-16 02:06:05,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-02-16 02:06:05,780 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 272 transitions. [2023-02-16 02:06:05,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-02-16 02:06:05,781 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:05,781 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:05,786 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 02:06:05,986 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 02:06:05,986 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:05,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:05,987 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2023-02-16 02:06:05,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:06:05,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273838599] [2023-02-16 02:06:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:06:06,008 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:06:06,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1272255907] [2023-02-16 02:06:06,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:06,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:06,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:06,013 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 02:06:06,015 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 02:06:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:06,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 60 conjunts are in the unsatisfiable core [2023-02-16 02:06:06,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:06,499 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 14 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-02-16 02:06:06,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:07,418 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2023-02-16 02:06:07,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:06:07,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273838599] [2023-02-16 02:06:07,419 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:06:07,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272255907] [2023-02-16 02:06:07,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272255907] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:06:07,419 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:06:07,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13] total 26 [2023-02-16 02:06:07,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627378834] [2023-02-16 02:06:07,419 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:06:07,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 02:06:07,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:06:07,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 02:06:07,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=558, Unknown=0, NotChecked=0, Total=650 [2023-02-16 02:06:07,421 INFO L87 Difference]: Start difference. First operand 191 states and 272 transitions. Second operand has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-16 02:06:18,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:18,246 INFO L93 Difference]: Finished difference Result 471 states and 681 transitions. [2023-02-16 02:06:18,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-02-16 02:06:18,247 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 60 [2023-02-16 02:06:18,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:18,249 INFO L225 Difference]: With dead ends: 471 [2023-02-16 02:06:18,249 INFO L226 Difference]: Without dead ends: 366 [2023-02-16 02:06:18,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 92 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=523, Invalid=2447, Unknown=0, NotChecked=0, Total=2970 [2023-02-16 02:06:18,251 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 152 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 1825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:18,251 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 306 Invalid, 1825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-02-16 02:06:18,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2023-02-16 02:06:18,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 304. [2023-02-16 02:06:18,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 198 states have (on average 1.2474747474747474) internal successors, (247), 203 states have internal predecessors, (247), 91 states have call successors, (91), 14 states have call predecessors, (91), 14 states have return successors, (90), 86 states have call predecessors, (90), 90 states have call successors, (90) [2023-02-16 02:06:18,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 428 transitions. [2023-02-16 02:06:18,341 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 428 transitions. Word has length 60 [2023-02-16 02:06:18,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:18,342 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 428 transitions. [2023-02-16 02:06:18,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.0) internal successors, (48), 23 states have internal predecessors, (48), 7 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2023-02-16 02:06:18,342 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 428 transitions. [2023-02-16 02:06:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-02-16 02:06:18,343 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:18,343 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:18,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 02:06:18,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 02:06:18,544 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:18,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:18,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1726486837, now seen corresponding path program 1 times [2023-02-16 02:06:18,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:06:18,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151698214] [2023-02-16 02:06:18,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:18,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:06:18,563 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:06:18,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1345744167] [2023-02-16 02:06:18,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:18,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:18,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:18,565 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:06:18,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 02:06:18,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:18,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-16 02:06:18,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:18,644 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-16 02:06:18,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:18,700 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-02-16 02:06:18,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:06:18,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151698214] [2023-02-16 02:06:18,700 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:06:18,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345744167] [2023-02-16 02:06:18,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345744167] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:06:18,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:06:18,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-16 02:06:18,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571103971] [2023-02-16 02:06:18,700 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:06:18,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 02:06:18,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:06:18,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 02:06:18,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-02-16 02:06:18,701 INFO L87 Difference]: Start difference. First operand 304 states and 428 transitions. Second operand has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-16 02:06:19,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:19,036 INFO L93 Difference]: Finished difference Result 501 states and 711 transitions. [2023-02-16 02:06:19,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 02:06:19,037 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 68 [2023-02-16 02:06:19,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:19,042 INFO L225 Difference]: With dead ends: 501 [2023-02-16 02:06:19,043 INFO L226 Difference]: Without dead ends: 292 [2023-02-16 02:06:19,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2023-02-16 02:06:19,044 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 49 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:19,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 258 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 02:06:19,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2023-02-16 02:06:19,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 239. [2023-02-16 02:06:19,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 150 states have (on average 1.18) internal successors, (177), 152 states have internal predecessors, (177), 75 states have call successors, (75), 13 states have call predecessors, (75), 13 states have return successors, (74), 73 states have call predecessors, (74), 74 states have call successors, (74) [2023-02-16 02:06:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 326 transitions. [2023-02-16 02:06:19,113 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 326 transitions. Word has length 68 [2023-02-16 02:06:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:19,113 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 326 transitions. [2023-02-16 02:06:19,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 12 states have internal predecessors, (44), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2023-02-16 02:06:19,113 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 326 transitions. [2023-02-16 02:06:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-02-16 02:06:19,114 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:19,114 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:19,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 02:06:19,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 02:06:19,319 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:19,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:19,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1622368081, now seen corresponding path program 2 times [2023-02-16 02:06:19,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:06:19,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379152512] [2023-02-16 02:06:19,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:19,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:06:19,332 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:06:19,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1029502103] [2023-02-16 02:06:19,337 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 02:06:19,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:19,338 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:06:19,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 02:06:19,387 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 02:06:19,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 02:06:19,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 69 conjunts are in the unsatisfiable core [2023-02-16 02:06:19,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-02-16 02:06:19,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:21,563 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-02-16 02:06:21,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 02:06:21,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379152512] [2023-02-16 02:06:21,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 02:06:21,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029502103] [2023-02-16 02:06:21,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029502103] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:06:21,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:06:21,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 28 [2023-02-16 02:06:21,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278247637] [2023-02-16 02:06:21,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:06:21,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-02-16 02:06:21,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 02:06:21,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-02-16 02:06:21,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=639, Unknown=0, NotChecked=0, Total=756 [2023-02-16 02:06:21,566 INFO L87 Difference]: Start difference. First operand 239 states and 326 transitions. Second operand has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 25 states have internal predecessors, (59), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-16 02:06:44,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:44,844 INFO L93 Difference]: Finished difference Result 391 states and 540 transitions. [2023-02-16 02:06:44,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-02-16 02:06:44,845 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 25 states have internal predecessors, (59), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) Word has length 73 [2023-02-16 02:06:44,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:44,846 INFO L225 Difference]: With dead ends: 391 [2023-02-16 02:06:44,846 INFO L226 Difference]: Without dead ends: 389 [2023-02-16 02:06:44,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=563, Invalid=2407, Unknown=0, NotChecked=0, Total=2970 [2023-02-16 02:06:44,848 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 244 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 1417 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 1417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:44,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 472 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 1417 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2023-02-16 02:06:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2023-02-16 02:06:44,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 332. [2023-02-16 02:06:44,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 204 states have (on average 1.1911764705882353) internal successors, (243), 205 states have internal predecessors, (243), 109 states have call successors, (109), 18 states have call predecessors, (109), 18 states have return successors, (108), 108 states have call predecessors, (108), 108 states have call successors, (108) [2023-02-16 02:06:44,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 460 transitions. [2023-02-16 02:06:44,981 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 460 transitions. Word has length 73 [2023-02-16 02:06:44,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:44,981 INFO L495 AbstractCegarLoop]: Abstraction has 332 states and 460 transitions. [2023-02-16 02:06:44,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 2.107142857142857) internal successors, (59), 25 states have internal predecessors, (59), 6 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 6 states have call predecessors, (16), 6 states have call successors, (16) [2023-02-16 02:06:44,981 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 460 transitions. [2023-02-16 02:06:44,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-02-16 02:06:44,982 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:44,982 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:44,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-02-16 02:06:45,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 02:06:45,188 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:45,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:45,188 INFO L85 PathProgramCache]: Analyzing trace with hash 160585404, now seen corresponding path program 1 times [2023-02-16 02:06:45,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 02:06:45,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756774206] [2023-02-16 02:06:45,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:45,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 02:06:45,199 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 02:06:45,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [450186031] [2023-02-16 02:06:45,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:45,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 02:06:45,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:45,200 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 02:06:45,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-02-16 02:06:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2023-02-16 02:06:45,252 WARN L124 FreeRefinementEngine]: Strategy CAMEL was unsuccessful and could not determine trace feasibility [2023-02-16 02:06:45,252 INFO L360 BasicCegarLoop]: Counterexample might be feasible [2023-02-16 02:06:45,258 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-16 02:06:45,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-02-16 02:06:45,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 02:06:45,462 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:45,464 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-16 02:06:45,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.02 02:06:45 BoogieIcfgContainer [2023-02-16 02:06:45,477 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-16 02:06:45,478 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-16 02:06:45,478 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-16 02:06:45,478 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-16 02:06:45,478 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:05:57" (3/4) ... [2023-02-16 02:06:45,480 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-16 02:06:45,480 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-16 02:06:45,481 INFO L158 Benchmark]: Toolchain (without parser) took 48843.99ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 92.6MB in the beginning and 105.0MB in the end (delta: -12.4MB). Peak memory consumption was 31.1MB. Max. memory is 16.1GB. [2023-02-16 02:06:45,481 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:06:45,481 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.53ms. Allocated memory is still 140.5MB. Free memory was 92.6MB in the beginning and 82.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-16 02:06:45,482 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.97ms. Allocated memory is still 140.5MB. Free memory was 81.6MB in the beginning and 80.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-16 02:06:45,482 INFO L158 Benchmark]: Boogie Preprocessor took 30.71ms. Allocated memory is still 140.5MB. Free memory was 80.0MB in the beginning and 78.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:06:45,482 INFO L158 Benchmark]: RCFGBuilder took 231.62ms. Allocated memory is still 140.5MB. Free memory was 78.9MB in the beginning and 67.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-02-16 02:06:45,483 INFO L158 Benchmark]: TraceAbstraction took 48336.94ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 66.4MB in the beginning and 105.0MB in the end (delta: -38.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2023-02-16 02:06:45,483 INFO L158 Benchmark]: Witness Printer took 2.62ms. Allocated memory is still 182.5MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-16 02:06:45,484 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 111.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.53ms. Allocated memory is still 140.5MB. Free memory was 92.6MB in the beginning and 82.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.97ms. Allocated memory is still 140.5MB. Free memory was 81.6MB in the beginning and 80.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.71ms. Allocated memory is still 140.5MB. Free memory was 80.0MB in the beginning and 78.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 231.62ms. Allocated memory is still 140.5MB. Free memory was 78.9MB in the beginning and 67.5MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 48336.94ms. Allocated memory was 140.5MB in the beginning and 182.5MB in the end (delta: 41.9MB). Free memory was 66.4MB in the beginning and 105.0MB in the end (delta: -38.7MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Witness Printer took 2.62ms. Allocated memory is still 182.5MB. Free memory is still 105.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int x, y; [L20] long long a, b, p, q, r, s; [L21] x = __VERIFIER_nondet_int() [L22] CALL assume_abort_if_not(x>=0 && x<=5) [L8] COND FALSE !(!cond) [L22] RET assume_abort_if_not(x>=0 && x<=5) [L23] y = __VERIFIER_nondet_int() [L24] CALL assume_abort_if_not(y>=0 && y<=5) [L8] COND FALSE !(!cond) [L24] RET assume_abort_if_not(y>=0 && y<=5) [L25] CALL assume_abort_if_not(x >= 1) [L8] COND FALSE !(!cond) [L25] RET assume_abort_if_not(x >= 1) [L26] CALL assume_abort_if_not(y >= 1) [L8] COND FALSE !(!cond) [L26] RET assume_abort_if_not(y >= 1) [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 [L32] r = 0 [L33] s = 1 [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND FALSE !(!(b != 0)) [L38] long long c, k; [L39] c = a [L40] k = 0 [L42] COND TRUE 1 [L43] COND FALSE !(!(c >= b)) [L45] long long d, v; [L46] d = 1 [L47] v = b [L49] COND TRUE 1 [L50] CALL __VERIFIER_assert(a == y * r + x * p) [L11] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(a == y * r + x * p) [L51] CALL __VERIFIER_assert(b == x * q + y * s) [L11] COND FALSE !(!(cond)) [L51] RET __VERIFIER_assert(b == x * q + y * s) [L52] CALL __VERIFIER_assert(a == k * b + c) [L11] COND FALSE !(!(cond)) [L52] RET __VERIFIER_assert(a == k * b + c) [L53] CALL __VERIFIER_assert(v == b * d) [L11] COND FALSE !(!(cond)) [L53] RET __VERIFIER_assert(v == b * d) [L55] COND FALSE !(!(c >= 2 * v)) [L57] d = 2 * d [L58] v = 2 * v [L49] COND TRUE 1 [L50] CALL __VERIFIER_assert(a == y * r + x * p) [L11] COND FALSE !(!(cond)) [L50] RET __VERIFIER_assert(a == y * r + x * p) [L51] CALL __VERIFIER_assert(b == x * q + y * s) [L11] COND FALSE !(!(cond)) [L51] RET __VERIFIER_assert(b == x * q + y * s) [L52] CALL __VERIFIER_assert(a == k * b + c) [L11] COND FALSE !(!(cond)) [L52] RET __VERIFIER_assert(a == k * b + c) [L53] CALL __VERIFIER_assert(v == b * d) [L11] COND FALSE !(!(cond)) [L53] RET __VERIFIER_assert(v == b * d) [L55] COND TRUE !(c >= 2 * v) [L60] c = c - v [L61] k = k + d [L42] COND TRUE 1 [L43] COND TRUE !(c >= b) [L64] a = b [L65] b = c [L66] long long temp; [L67] temp = p [L68] p = q [L69] q = temp - q * k [L70] temp = r [L71] r = s [L72] s = temp - s * k [L35] COND TRUE 1 [L36] COND TRUE !(b != 0) [L74] CALL __VERIFIER_assert(p*x - q*x + r*y - s*y == a) [L11] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 48.3s, OverallIterations: 13, TraceHistogramMax: 9, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 36.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 826 SdHoareTripleChecker+Valid, 17.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 789 mSDsluCounter, 2494 SdHoareTripleChecker+Invalid, 16.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1998 mSDsCounter, 793 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4838 IncrementalHoareTripleChecker+Invalid, 5631 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 793 mSolverCounterUnsat, 496 mSDtfsCounter, 4838 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1032 GetRequests, 796 SyntacticMatches, 7 SemanticMatches, 229 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1605 ImplicationChecksByTransitivity, 23.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=332occurred in iteration=12, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 12 MinimizatonAttempts, 237 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 654 NumberOfCodeBlocks, 654 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 926 ConstructedInterpolants, 4 QuantifiedInterpolants, 4673 SizeOfPredicates, 93 NumberOfNonLiveVariables, 1562 ConjunctsInSsa, 296 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 772/880 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-16 02:06:45,508 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound5.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1aca3c96522e618238f11f200c96e0ec490e756d4e04895bd2a51f9a4ff85af1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 02:06:47,163 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 02:06:47,165 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 02:06:47,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 02:06:47,199 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 02:06:47,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 02:06:47,205 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 02:06:47,207 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 02:06:47,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 02:06:47,214 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 02:06:47,215 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 02:06:47,217 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 02:06:47,218 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 02:06:47,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 02:06:47,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 02:06:47,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 02:06:47,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 02:06:47,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 02:06:47,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 02:06:47,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 02:06:47,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 02:06:47,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 02:06:47,232 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 02:06:47,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 02:06:47,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 02:06:47,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 02:06:47,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 02:06:47,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 02:06:47,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 02:06:47,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 02:06:47,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 02:06:47,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 02:06:47,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 02:06:47,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 02:06:47,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 02:06:47,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 02:06:47,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 02:06:47,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 02:06:47,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 02:06:47,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 02:06:47,249 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 02:06:47,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-16 02:06:47,275 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 02:06:47,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 02:06:47,276 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 02:06:47,276 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 02:06:47,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 02:06:47,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 02:06:47,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 02:06:47,277 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 02:06:47,277 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 02:06:47,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 02:06:47,278 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 02:06:47,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 02:06:47,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 02:06:47,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-16 02:06:47,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-16 02:06:47,279 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 02:06:47,279 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:06:47,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-16 02:06:47,280 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 02:06:47,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 02:06:47,281 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-16 02:06:47,281 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 02:06:47,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1aca3c96522e618238f11f200c96e0ec490e756d4e04895bd2a51f9a4ff85af1 [2023-02-16 02:06:47,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 02:06:47,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 02:06:47,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 02:06:47,562 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 02:06:47,563 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 02:06:47,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound5.c [2023-02-16 02:06:48,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 02:06:48,654 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 02:06:48,654 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound5.c [2023-02-16 02:06:48,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad72e901e/c99f479f8588400ea101cbae9dc468ae/FLAG37a341fda [2023-02-16 02:06:48,674 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad72e901e/c99f479f8588400ea101cbae9dc468ae [2023-02-16 02:06:48,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 02:06:48,677 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 02:06:48,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 02:06:48,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 02:06:48,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 02:06:48,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,684 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39af454 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48, skipping insertion in model container [2023-02-16 02:06:48,684 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,688 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 02:06:48,705 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 02:06:48,817 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/egcd3-ll_valuebound5.c[490,503] [2023-02-16 02:06:48,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:06:48,855 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 02:06:48,866 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/egcd3-ll_valuebound5.c[490,503] [2023-02-16 02:06:48,875 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 02:06:48,885 INFO L208 MainTranslator]: Completed translation [2023-02-16 02:06:48,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48 WrapperNode [2023-02-16 02:06:48,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 02:06:48,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 02:06:48,886 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 02:06:48,886 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 02:06:48,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,920 INFO L138 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 78 [2023-02-16 02:06:48,920 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 02:06:48,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 02:06:48,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 02:06:48,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 02:06:48,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,938 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,941 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,943 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 02:06:48,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 02:06:48,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 02:06:48,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 02:06:48,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (1/1) ... [2023-02-16 02:06:48,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 02:06:48,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 02:06:48,965 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 02:06:48,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 02:06:48,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 02:06:48,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-16 02:06:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-16 02:06:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-16 02:06:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 02:06:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 02:06:48,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-16 02:06:48,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-16 02:06:49,038 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 02:06:49,040 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 02:06:49,376 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 02:06:49,380 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 02:06:49,380 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2023-02-16 02:06:49,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:06:49 BoogieIcfgContainer [2023-02-16 02:06:49,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 02:06:49,409 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 02:06:49,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 02:06:49,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 02:06:49,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 02:06:48" (1/3) ... [2023-02-16 02:06:49,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c2e948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:06:49, skipping insertion in model container [2023-02-16 02:06:49,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 02:06:48" (2/3) ... [2023-02-16 02:06:49,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29c2e948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 02:06:49, skipping insertion in model container [2023-02-16 02:06:49,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 02:06:49" (3/3) ... [2023-02-16 02:06:49,439 INFO L112 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound5.c [2023-02-16 02:06:49,450 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 02:06:49,450 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-16 02:06:49,490 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 02:06:49,497 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;@71f9f2c4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 02:06:49,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-16 02:06:49,500 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-16 02:06:49,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 02:06:49,505 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:49,506 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:49,506 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:49,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2023-02-16 02:06:49,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:06:49,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1221910165] [2023-02-16 02:06:49,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:49,520 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:06:49,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:06:49,523 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:06:49,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-16 02:06:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:49,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-16 02:06:49,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:06:49,669 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 02:06:49,669 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:06:49,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1221910165] [2023-02-16 02:06:49,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1221910165] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 02:06:49,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 02:06:49,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 02:06:49,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176099203] [2023-02-16 02:06:49,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:06:49,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 02:06:49,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:06:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 02:06:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:06:49,702 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:06:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:49,725 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2023-02-16 02:06:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 02:06:49,726 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2023-02-16 02:06:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:49,734 INFO L225 Difference]: With dead ends: 67 [2023-02-16 02:06:49,734 INFO L226 Difference]: Without dead ends: 31 [2023-02-16 02:06:49,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 02:06:49,740 INFO L413 NwaCegarLoop]: 44 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, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:49,741 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 02:06:49,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-16 02:06:49,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-16 02:06:49,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:06:49,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2023-02-16 02:06:49,769 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2023-02-16 02:06:49,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:49,770 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2023-02-16 02:06:49,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:06:49,771 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2023-02-16 02:06:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-16 02:06:49,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:49,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:49,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-02-16 02:06:49,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:06:49,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:49,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:49,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2023-02-16 02:06:49,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:06:49,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878726451] [2023-02-16 02:06:49,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:49,982 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:06:49,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:06:49,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:06:49,986 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-16 02:06:50,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:50,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-16 02:06:50,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 02:06:50,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:06:50,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:06:50,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878726451] [2023-02-16 02:06:50,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878726451] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 02:06:50,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:06:50,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-02-16 02:06:50,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214303070] [2023-02-16 02:06:50,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:06:50,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:06:50,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:06:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:06:50,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-02-16 02:06:50,570 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:06:52,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:06:52,393 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2023-02-16 02:06:52,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:06:52,399 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2023-02-16 02:06:52,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:06:52,399 INFO L225 Difference]: With dead ends: 40 [2023-02-16 02:06:52,400 INFO L226 Difference]: Without dead ends: 33 [2023-02-16 02:06:52,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-02-16 02:06:52,401 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 22 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-02-16 02:06:52,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-02-16 02:06:52,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-02-16 02:06:52,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2023-02-16 02:06:52,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-16 02:06:52,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-16 02:06:52,407 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2023-02-16 02:06:52,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:06:52,414 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-16 02:06:52,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:06:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-16 02:06:52,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 02:06:52,416 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:06:52,417 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:06:52,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-02-16 02:06:52,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:06:52,628 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:06:52,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:06:52,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2023-02-16 02:06:52,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:06:52,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869924795] [2023-02-16 02:06:52,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:06:52,629 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:06:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:06:52,633 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:06:52,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-16 02:06:52,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:06:52,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-16 02:06:52,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:06:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:06:53,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:06:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:06:58,448 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:06:58,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869924795] [2023-02-16 02:06:58,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869924795] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 02:06:58,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:06:58,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2023-02-16 02:06:58,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832806880] [2023-02-16 02:06:58,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:06:58,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:06:58,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:06:58,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:06:58,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-02-16 02:06:58,451 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:07:05,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:07:05,374 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2023-02-16 02:07:05,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:07:05,401 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2023-02-16 02:07:05,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:07:05,402 INFO L225 Difference]: With dead ends: 49 [2023-02-16 02:07:05,402 INFO L226 Difference]: Without dead ends: 47 [2023-02-16 02:07:05,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:07:05,403 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2023-02-16 02:07:05,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 133 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2023-02-16 02:07:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-02-16 02:07:05,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2023-02-16 02:07:05,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:07:05,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2023-02-16 02:07:05,417 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2023-02-16 02:07:05,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:07:05,417 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2023-02-16 02:07:05,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-02-16 02:07:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2023-02-16 02:07:05,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-02-16 02:07:05,418 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:07:05,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:07:05,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-16 02:07:05,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:07:05,627 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:07:05,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:07:05,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2023-02-16 02:07:05,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:07:05,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890027984] [2023-02-16 02:07:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:07:05,634 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:07:05,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:07:05,635 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:07:05,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-16 02:07:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:07:05,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-16 02:07:05,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:07:06,454 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-16 02:07:06,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:07:07,190 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:07:07,191 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:07:07,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890027984] [2023-02-16 02:07:07,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890027984] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:07:07,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:07:07,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2023-02-16 02:07:07,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073103903] [2023-02-16 02:07:07,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:07:07,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 02:07:07,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:07:07,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 02:07:07,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:07:07,193 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 02:07:17,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:07:17,213 INFO L93 Difference]: Finished difference Result 114 states and 162 transitions. [2023-02-16 02:07:17,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-16 02:07:17,221 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 35 [2023-02-16 02:07:17,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:07:17,223 INFO L225 Difference]: With dead ends: 114 [2023-02-16 02:07:17,223 INFO L226 Difference]: Without dead ends: 107 [2023-02-16 02:07:17,224 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-02-16 02:07:17,225 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 171 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2023-02-16 02:07:17,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 195 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2023-02-16 02:07:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-16 02:07:17,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 53. [2023-02-16 02:07:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.2222222222222223) internal successors, (44), 37 states have internal predecessors, (44), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:07:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2023-02-16 02:07:17,241 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 35 [2023-02-16 02:07:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:07:17,242 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2023-02-16 02:07:17,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 12 states have internal predecessors, (31), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-02-16 02:07:17,242 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2023-02-16 02:07:17,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 02:07:17,243 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:07:17,243 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:07:17,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-16 02:07:17,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:07:17,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:07:17,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:07:17,449 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2023-02-16 02:07:17,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:07:17,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028314093] [2023-02-16 02:07:17,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:07:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:07:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:07:17,451 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:07:17,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-16 02:07:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:07:17,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 02:07:17,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:07:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:07:18,500 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:07:29,755 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:07:29,756 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:07:29,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028314093] [2023-02-16 02:07:29,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028314093] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 02:07:29,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:07:29,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2023-02-16 02:07:29,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051244343] [2023-02-16 02:07:29,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:07:29,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 02:07:29,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:07:29,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 02:07:29,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:07:29,758 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 02:07:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:07:41,104 INFO L93 Difference]: Finished difference Result 61 states and 76 transitions. [2023-02-16 02:07:41,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 02:07:41,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2023-02-16 02:07:41,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:07:41,140 INFO L225 Difference]: With dead ends: 61 [2023-02-16 02:07:41,140 INFO L226 Difference]: Without dead ends: 59 [2023-02-16 02:07:41,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:07:41,141 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 13 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2023-02-16 02:07:41,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 127 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2023-02-16 02:07:41,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-16 02:07:41,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-02-16 02:07:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 39 states have (on average 1.205128205128205) internal successors, (47), 40 states have internal predecessors, (47), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-16 02:07:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 72 transitions. [2023-02-16 02:07:41,152 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 72 transitions. Word has length 38 [2023-02-16 02:07:41,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:07:41,152 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 72 transitions. [2023-02-16 02:07:41,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 02:07:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 72 transitions. [2023-02-16 02:07:41,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-02-16 02:07:41,153 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:07:41,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:07:41,163 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-02-16 02:07:41,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:07:41,362 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:07:41,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:07:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2023-02-16 02:07:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:07:41,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628435225] [2023-02-16 02:07:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:07:41,364 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:07:41,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:07:41,365 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:07:41,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-16 02:07:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:07:41,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 02:07:41,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:07:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:07:42,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:07:53,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-02-16 02:07:53,251 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:07:53,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628435225] [2023-02-16 02:07:53,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628435225] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:07:53,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:07:53,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 6] total 15 [2023-02-16 02:07:53,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367636930] [2023-02-16 02:07:53,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:07:53,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-16 02:07:53,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:07:53,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-16 02:07:53,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:07:53,253 INFO L87 Difference]: Start difference. First operand 57 states and 72 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-16 02:08:04,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:08:16,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:16,365 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2023-02-16 02:08:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 02:08:16,394 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 38 [2023-02-16 02:08:16,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:16,395 INFO L225 Difference]: With dead ends: 83 [2023-02-16 02:08:16,395 INFO L226 Difference]: Without dead ends: 81 [2023-02-16 02:08:16,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2023-02-16 02:08:16,396 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 78 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 32 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.4s IncrementalHoareTripleChecker+Time [2023-02-16 02:08:16,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 265 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 285 Invalid, 1 Unknown, 0 Unchecked, 19.4s Time] [2023-02-16 02:08:16,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-02-16 02:08:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2023-02-16 02:08:16,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 55 states have (on average 1.2181818181818183) internal successors, (67), 56 states have internal predecessors, (67), 17 states have call successors, (17), 5 states have call predecessors, (17), 5 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2023-02-16 02:08:16,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2023-02-16 02:08:16,418 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 38 [2023-02-16 02:08:16,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:16,418 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2023-02-16 02:08:16,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 5 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2023-02-16 02:08:16,419 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2023-02-16 02:08:16,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 02:08:16,422 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:16,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:16,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-02-16 02:08:16,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:08:16,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:16,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:16,625 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2023-02-16 02:08:16,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:08:16,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099488313] [2023-02-16 02:08:16,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:16,626 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:08:16,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:08:16,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:08:16,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-16 02:08:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:08:16,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-16 02:08:16,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:17,792 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-02-16 02:08:17,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:08:21,700 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-02-16 02:08:21,701 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:08:21,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099488313] [2023-02-16 02:08:21,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099488313] provided 1 perfect and 1 imperfect interpolant sequences [2023-02-16 02:08:21,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-16 02:08:21,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2023-02-16 02:08:21,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543755786] [2023-02-16 02:08:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 02:08:21,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 02:08:21,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:08:21,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 02:08:21,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2023-02-16 02:08:21,702 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 02:08:27,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 02:08:27,343 INFO L93 Difference]: Finished difference Result 105 states and 141 transitions. [2023-02-16 02:08:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 02:08:27,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2023-02-16 02:08:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 02:08:27,356 INFO L225 Difference]: With dead ends: 105 [2023-02-16 02:08:27,356 INFO L226 Difference]: Without dead ends: 103 [2023-02-16 02:08:27,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2023-02-16 02:08:27,357 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 7 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2023-02-16 02:08:27,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 124 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2023-02-16 02:08:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-16 02:08:27,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2023-02-16 02:08:27,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 64 states have (on average 1.234375) internal successors, (79), 65 states have internal predecessors, (79), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2023-02-16 02:08:27,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 136 transitions. [2023-02-16 02:08:27,375 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 136 transitions. Word has length 43 [2023-02-16 02:08:27,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 02:08:27,376 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 136 transitions. [2023-02-16 02:08:27,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 02:08:27,376 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 136 transitions. [2023-02-16 02:08:27,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-02-16 02:08:27,378 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 02:08:27,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 02:08:27,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-16 02:08:27,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:08:27,581 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-16 02:08:27,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 02:08:27,582 INFO L85 PathProgramCache]: Analyzing trace with hash -2141198011, now seen corresponding path program 1 times [2023-02-16 02:08:27,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-16 02:08:27,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478717868] [2023-02-16 02:08:27,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 02:08:27,582 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-16 02:08:27,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-16 02:08:27,583 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-16 02:08:27,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-16 02:08:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 02:08:27,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-16 02:08:27,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 02:08:29,823 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-02-16 02:08:29,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 02:09:18,960 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 02:09:30,536 WARN L859 $PredicateComparison]: unable to prove that (or (= |c_ULTIMATE.start_main_~c~0#1| (let ((.cse0 ((_ sign_extend 32) |c_ULTIMATE.start_main_~x~0#1|)) (.cse1 ((_ sign_extend 32) |c_ULTIMATE.start_main_~y~0#1|))) (bvadd (bvmul |c_ULTIMATE.start_main_~p~0#1| .cse0) (bvmul .cse0 (bvneg (bvmul |c_ULTIMATE.start_main_~q~0#1| |c_ULTIMATE.start_main_~k~0#1|))) (bvmul (bvneg (bvmul |c_ULTIMATE.start_main_~s~0#1| |c_ULTIMATE.start_main_~k~0#1|)) .cse1) (bvmul .cse1 |c_ULTIMATE.start_main_~r~0#1|)))) (= (_ bv0 64) |c_ULTIMATE.start_main_~c~0#1|) (bvsge |c_ULTIMATE.start_main_~c~0#1| |c_ULTIMATE.start_main_~b~0#1|)) is different from true [2023-02-16 02:09:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 2 not checked. [2023-02-16 02:09:48,683 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-16 02:09:48,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478717868] [2023-02-16 02:09:48,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478717868] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 02:09:48,683 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 02:09:48,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 23 [2023-02-16 02:09:48,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405387326] [2023-02-16 02:09:48,683 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 02:09:48,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 02:09:48,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-16 02:09:48,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 02:09:48,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=370, Unknown=2, NotChecked=40, Total=506 [2023-02-16 02:09:48,685 INFO L87 Difference]: Start difference. First operand 100 states and 136 transitions. Second operand has 23 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 19 states have internal predecessors, (40), 6 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-02-16 02:09:51,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:09:53,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:10:00,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:10:03,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:10:06,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:10:15,486 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:10:24,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:10:29,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-02-16 02:10:32,784 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []