./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3dbbec33 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/hard-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3dbbec3 [2023-02-14 12:25:17,947 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 12:25:17,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 12:25:18,001 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 12:25:18,002 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 12:25:18,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 12:25:18,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 12:25:18,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 12:25:18,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 12:25:18,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 12:25:18,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 12:25:18,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 12:25:18,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 12:25:18,021 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 12:25:18,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 12:25:18,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 12:25:18,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 12:25:18,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 12:25:18,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 12:25:18,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 12:25:18,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 12:25:18,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 12:25:18,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 12:25:18,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 12:25:18,048 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 12:25:18,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 12:25:18,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 12:25:18,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 12:25:18,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 12:25:18,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 12:25:18,051 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 12:25:18,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 12:25:18,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 12:25:18,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 12:25:18,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 12:25:18,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 12:25:18,059 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 12:25:18,059 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 12:25:18,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 12:25:18,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 12:25:18,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 12:25:18,061 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 12:25:18,090 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 12:25:18,091 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 12:25:18,091 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 12:25:18,091 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 12:25:18,092 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 12:25:18,092 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 12:25:18,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 12:25:18,093 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 12:25:18,093 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 12:25:18,093 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 12:25:18,094 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 12:25:18,094 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 12:25:18,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 12:25:18,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 12:25:18,094 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 12:25:18,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 12:25:18,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 12:25:18,095 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 12:25:18,095 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 12:25:18,095 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 12:25:18,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 12:25:18,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 12:25:18,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 12:25:18,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 12:25:18,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 12:25:18,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 12:25:18,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 12:25:18,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 12:25:18,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 12:25:18,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 12:25:18,097 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 12:25:18,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 12:25:18,097 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 12:25:18,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 12:25:18,097 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 12:25:18,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0bb6780cd72c063a3ddf598e6503fa6a629155476e6b8e08224a0e59d0bc00b9 [2023-02-14 12:25:18,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 12:25:18,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 12:25:18,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 12:25:18,302 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 12:25:18,303 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 12:25:18,304 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2023-02-14 12:25:19,362 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 12:25:19,562 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 12:25:19,562 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard-ll_valuebound1.c [2023-02-14 12:25:19,566 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa6b94a2/5c813360620b4e078f7b781bfa9b62cd/FLAGc208f4076 [2023-02-14 12:25:19,576 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/baa6b94a2/5c813360620b4e078f7b781bfa9b62cd [2023-02-14 12:25:19,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 12:25:19,579 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 12:25:19,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 12:25:19,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 12:25:19,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 12:25:19,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46440b08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19, skipping insertion in model container [2023-02-14 12:25:19,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 12:25:19,606 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 12:25:19,709 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/hard-ll_valuebound1.c[538,551] [2023-02-14 12:25:19,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 12:25:19,729 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 12:25:19,738 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/hard-ll_valuebound1.c[538,551] [2023-02-14 12:25:19,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 12:25:19,755 INFO L208 MainTranslator]: Completed translation [2023-02-14 12:25:19,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19 WrapperNode [2023-02-14 12:25:19,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 12:25:19,757 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 12:25:19,757 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 12:25:19,757 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 12:25:19,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,781 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 55 [2023-02-14 12:25:19,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 12:25:19,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 12:25:19,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 12:25:19,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 12:25:19,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,798 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 12:25:19,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 12:25:19,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 12:25:19,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 12:25:19,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (1/1) ... [2023-02-14 12:25:19,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 12:25:19,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:19,830 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) [2023-02-14 12:25:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 12:25:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-02-14 12:25:19,872 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-02-14 12:25:19,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 12:25:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 12:25:19,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 12:25:19,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-14 12:25:19,873 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-14 12:25:19,855 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 [2023-02-14 12:25:19,927 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 12:25:19,929 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 12:25:20,104 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 12:25:20,109 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 12:25:20,109 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 12:25:20,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:25:20 BoogieIcfgContainer [2023-02-14 12:25:20,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 12:25:20,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 12:25:20,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 12:25:20,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 12:25:20,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 12:25:19" (1/3) ... [2023-02-14 12:25:20,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c017b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:25:20, skipping insertion in model container [2023-02-14 12:25:20,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:25:19" (2/3) ... [2023-02-14 12:25:20,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17c017b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:25:20, skipping insertion in model container [2023-02-14 12:25:20,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:25:20" (3/3) ... [2023-02-14 12:25:20,132 INFO L112 eAbstractionObserver]: Analyzing ICFG hard-ll_valuebound1.c [2023-02-14 12:25:20,151 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 12:25:20,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 12:25:20,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 12:25:20,191 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;@79097c8e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 12:25:20,191 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 12:25:20,195 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-02-14 12:25:20,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 12:25:20,200 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:20,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:25:20,201 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:20,206 INFO L85 PathProgramCache]: Analyzing trace with hash -487550744, now seen corresponding path program 1 times [2023-02-14 12:25:20,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:20,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47109614] [2023-02-14 12:25:20,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:20,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 12:25:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 12:25:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-14 12:25:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 12:25:20,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:20,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47109614] [2023-02-14 12:25:20,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47109614] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 12:25:20,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 12:25:20,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 12:25:20,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135973058] [2023-02-14 12:25:20,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 12:25:20,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 12:25:20,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:20,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 12:25:20,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 12:25:20,485 INFO L87 Difference]: Start difference. First operand has 33 states, 19 states have (on average 1.5263157894736843) internal successors, (29), 20 states have internal predecessors, (29), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 12:25:20,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:20,513 INFO L93 Difference]: Finished difference Result 63 states and 104 transitions. [2023-02-14 12:25:20,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 12:25:20,515 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-02-14 12:25:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:20,521 INFO L225 Difference]: With dead ends: 63 [2023-02-14 12:25:20,521 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 12:25:20,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 12:25:20,530 INFO L413 NwaCegarLoop]: 43 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, 43 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 [2023-02-14 12:25:20,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 12:25:20,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 12:25:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2023-02-14 12:25:20,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 16 states have (on average 1.25) internal successors, (20), 17 states have internal predecessors, (20), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-14 12:25:20,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 39 transitions. [2023-02-14 12:25:20,559 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 39 transitions. Word has length 24 [2023-02-14 12:25:20,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:20,559 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 39 transitions. [2023-02-14 12:25:20,559 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-14 12:25:20,560 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 39 transitions. [2023-02-14 12:25:20,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-14 12:25:20,561 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:20,561 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:25:20,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-14 12:25:20,562 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1636258074, now seen corresponding path program 1 times [2023-02-14 12:25:20,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:20,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323940154] [2023-02-14 12:25:20,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:20,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 12:25:20,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 12:25:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-14 12:25:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 12:25:20,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:20,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323940154] [2023-02-14 12:25:20,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323940154] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 12:25:20,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 12:25:20,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 12:25:20,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157281957] [2023-02-14 12:25:20,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 12:25:20,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 12:25:20,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:20,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 12:25:20,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 12:25:20,755 INFO L87 Difference]: Start difference. First operand 29 states and 39 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 12:25:20,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:20,808 INFO L93 Difference]: Finished difference Result 42 states and 56 transitions. [2023-02-14 12:25:20,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 12:25:20,809 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-02-14 12:25:20,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:20,810 INFO L225 Difference]: With dead ends: 42 [2023-02-14 12:25:20,810 INFO L226 Difference]: Without dead ends: 40 [2023-02-14 12:25:20,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 12:25:20,812 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 12 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:20,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 128 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 12:25:20,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2023-02-14 12:25:20,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2023-02-14 12:25:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-14 12:25:20,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2023-02-14 12:25:20,822 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 24 [2023-02-14 12:25:20,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:20,822 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2023-02-14 12:25:20,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-14 12:25:20,823 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2023-02-14 12:25:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-14 12:25:20,824 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:20,824 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:25:20,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-14 12:25:20,824 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:20,825 INFO L85 PathProgramCache]: Analyzing trace with hash 906849917, now seen corresponding path program 1 times [2023-02-14 12:25:20,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:20,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268684587] [2023-02-14 12:25:20,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:20,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:20,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-14 12:25:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-02-14 12:25:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-02-14 12:25:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-02-14 12:25:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:20,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 12:25:20,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:20,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268684587] [2023-02-14 12:25:20,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268684587] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 12:25:20,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 12:25:20,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 12:25:20,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534459996] [2023-02-14 12:25:20,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 12:25:20,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 12:25:20,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:20,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 12:25:20,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 12:25:20,966 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 12:25:21,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:21,040 INFO L93 Difference]: Finished difference Result 46 states and 59 transitions. [2023-02-14 12:25:21,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 12:25:21,041 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2023-02-14 12:25:21,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:21,042 INFO L225 Difference]: With dead ends: 46 [2023-02-14 12:25:21,042 INFO L226 Difference]: Without dead ends: 44 [2023-02-14 12:25:21,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-02-14 12:25:21,044 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 10 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:21,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 123 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-14 12:25:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-14 12:25:21,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 37. [2023-02-14 12:25:21,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 23 states have internal predecessors, (26), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-14 12:25:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2023-02-14 12:25:21,063 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 29 [2023-02-14 12:25:21,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:21,063 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2023-02-14 12:25:21,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-14 12:25:21,064 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2023-02-14 12:25:21,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-02-14 12:25:21,065 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:21,065 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:25:21,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-14 12:25:21,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:21,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:21,066 INFO L85 PathProgramCache]: Analyzing trace with hash 710995206, now seen corresponding path program 1 times [2023-02-14 12:25:21,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:21,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763873254] [2023-02-14 12:25:21,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:21,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:21,092 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 12:25:21,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [536986480] [2023-02-14 12:25:21,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:21,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:21,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:21,101 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) [2023-02-14 12:25:21,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-14 12:25:21,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:21,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-14 12:25:21,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:25:21,538 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-14 12:25:21,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 12:25:21,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-02-14 12:25:21,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:21,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763873254] [2023-02-14 12:25:21,733 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 12:25:21,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [536986480] [2023-02-14 12:25:21,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [536986480] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 12:25:21,733 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 12:25:21,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7] total 16 [2023-02-14 12:25:21,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653656387] [2023-02-14 12:25:21,735 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 12:25:21,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 12:25:21,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:21,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 12:25:21,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-02-14 12:25:21,737 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-14 12:25:22,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:22,067 INFO L93 Difference]: Finished difference Result 69 states and 88 transitions. [2023-02-14 12:25:22,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-14 12:25:22,068 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 34 [2023-02-14 12:25:22,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:22,069 INFO L225 Difference]: With dead ends: 69 [2023-02-14 12:25:22,069 INFO L226 Difference]: Without dead ends: 54 [2023-02-14 12:25:22,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2023-02-14 12:25:22,071 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 49 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:22,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 111 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 12:25:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2023-02-14 12:25:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2023-02-14 12:25:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.15625) internal successors, (37), 33 states have internal predecessors, (37), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-02-14 12:25:22,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2023-02-14 12:25:22,098 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 34 [2023-02-14 12:25:22,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:22,099 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2023-02-14 12:25:22,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 11 states have internal predecessors, (26), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2023-02-14 12:25:22,099 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2023-02-14 12:25:22,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-14 12:25:22,102 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:22,103 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:25:22,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-14 12:25:22,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:22,309 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:22,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:22,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1829555286, now seen corresponding path program 1 times [2023-02-14 12:25:22,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:22,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599698540] [2023-02-14 12:25:22,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:22,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:22,320 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 12:25:22,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1175464750] [2023-02-14 12:25:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:22,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:22,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:22,321 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) [2023-02-14 12:25:22,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-14 12:25:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:22,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 22 conjunts are in the unsatisfiable core [2023-02-14 12:25:22,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:25:22,589 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-02-14 12:25:22,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 12:25:22,751 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-02-14 12:25:22,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:22,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599698540] [2023-02-14 12:25:22,753 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 12:25:22,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175464750] [2023-02-14 12:25:22,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175464750] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 12:25:22,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 12:25:22,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8] total 16 [2023-02-14 12:25:22,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023779263] [2023-02-14 12:25:22,756 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 12:25:22,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-14 12:25:22,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-14 12:25:22,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-02-14 12:25:22,758 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-14 12:25:23,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:23,044 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2023-02-14 12:25:23,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-14 12:25:23,045 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) Word has length 41 [2023-02-14 12:25:23,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:23,047 INFO L225 Difference]: With dead ends: 66 [2023-02-14 12:25:23,047 INFO L226 Difference]: Without dead ends: 59 [2023-02-14 12:25:23,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2023-02-14 12:25:23,048 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 42 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:23,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 116 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-14 12:25:23,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-14 12:25:23,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-14 12:25:23,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.1081081081081081) internal successors, (41), 39 states have internal predecessors, (41), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2023-02-14 12:25:23,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2023-02-14 12:25:23,061 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 41 [2023-02-14 12:25:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:23,061 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2023-02-14 12:25:23,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.875) internal successors, (30), 13 states have internal predecessors, (30), 7 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 5 states have call successors, (11) [2023-02-14 12:25:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2023-02-14 12:25:23,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-02-14 12:25:23,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:23,063 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 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] [2023-02-14 12:25:23,069 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-14 12:25:23,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:23,268 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:23,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:23,269 INFO L85 PathProgramCache]: Analyzing trace with hash -677073599, now seen corresponding path program 1 times [2023-02-14 12:25:23,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:23,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355842656] [2023-02-14 12:25:23,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:23,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:23,279 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 12:25:23,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1211261552] [2023-02-14 12:25:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:23,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:23,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:23,283 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) [2023-02-14 12:25:23,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-14 12:25:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:23,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 12:25:23,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:25:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-14 12:25:23,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 12:25:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355842656] [2023-02-14 12:25:23,367 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 12:25:23,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211261552] [2023-02-14 12:25:23,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211261552] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 12:25:23,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 12:25:23,368 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 12:25:23,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338256106] [2023-02-14 12:25:23,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 12:25:23,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 12:25:23,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:23,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 12:25:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 12:25:23,370 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-14 12:25:23,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:23,401 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2023-02-14 12:25:23,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 12:25:23,401 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 69 [2023-02-14 12:25:23,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:23,403 INFO L225 Difference]: With dead ends: 70 [2023-02-14 12:25:23,403 INFO L226 Difference]: Without dead ends: 63 [2023-02-14 12:25:23,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-14 12:25:23,404 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 4 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:23,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 89 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 12:25:23,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2023-02-14 12:25:23,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2023-02-14 12:25:23,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 15 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 13 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-14 12:25:23,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2023-02-14 12:25:23,416 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 69 [2023-02-14 12:25:23,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:23,417 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2023-02-14 12:25:23,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-02-14 12:25:23,417 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2023-02-14 12:25:23,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-14 12:25:23,418 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:23,419 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 8, 3, 3, 3, 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] [2023-02-14 12:25:23,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-14 12:25:23,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:23,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:23,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1754894755, now seen corresponding path program 1 times [2023-02-14 12:25:23,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:23,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48757547] [2023-02-14 12:25:23,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:23,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 12:25:23,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557884174] [2023-02-14 12:25:23,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:23,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:23,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:23,637 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) [2023-02-14 12:25:23,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-14 12:25:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:23,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-14 12:25:23,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:25:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-02-14 12:25:24,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 12:25:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 16 proven. 7 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2023-02-14 12:25:25,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:25,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48757547] [2023-02-14 12:25:25,527 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 12:25:25,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557884174] [2023-02-14 12:25:25,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557884174] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 12:25:25,528 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 12:25:25,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 19 [2023-02-14 12:25:25,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032092077] [2023-02-14 12:25:25,528 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 12:25:25,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-14 12:25:25,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-14 12:25:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2023-02-14 12:25:25,532 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-02-14 12:25:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:34,274 INFO L93 Difference]: Finished difference Result 145 states and 178 transitions. [2023-02-14 12:25:34,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-14 12:25:34,275 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) Word has length 71 [2023-02-14 12:25:34,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:34,276 INFO L225 Difference]: With dead ends: 145 [2023-02-14 12:25:34,276 INFO L226 Difference]: Without dead ends: 106 [2023-02-14 12:25:34,277 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=147, Invalid=555, Unknown=0, NotChecked=0, Total=702 [2023-02-14 12:25:34,277 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 59 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:34,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 183 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-14 12:25:34,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-14 12:25:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 98. [2023-02-14 12:25:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 66 states have internal predecessors, (70), 25 states have call successors, (25), 11 states have call predecessors, (25), 11 states have return successors, (24), 20 states have call predecessors, (24), 24 states have call successors, (24) [2023-02-14 12:25:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2023-02-14 12:25:34,300 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 71 [2023-02-14 12:25:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:34,300 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2023-02-14 12:25:34,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.894736842105263) internal successors, (36), 16 states have internal predecessors, (36), 9 states have call successors, (23), 3 states have call predecessors, (23), 2 states have return successors, (22), 8 states have call predecessors, (22), 7 states have call successors, (22) [2023-02-14 12:25:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2023-02-14 12:25:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-02-14 12:25:34,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 12:25:34,302 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 3, 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] [2023-02-14 12:25:34,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-14 12:25:34,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:34,507 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 12:25:34,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 12:25:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1620227847, now seen corresponding path program 1 times [2023-02-14 12:25:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 12:25:34,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515227495] [2023-02-14 12:25:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 12:25:34,526 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 12:25:34,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1463130780] [2023-02-14 12:25:34,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 12:25:34,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 12:25:34,528 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) [2023-02-14 12:25:34,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-14 12:25:34,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 12:25:34,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-14 12:25:34,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 12:25:36,195 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 49 proven. 13 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2023-02-14 12:25:36,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 12:25:37,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 12:25:37,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515227495] [2023-02-14 12:25:37,564 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 12:25:37,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1463130780] [2023-02-14 12:25:37,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1463130780] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 12:25:37,564 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 12:25:37,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2023-02-14 12:25:37,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968648525] [2023-02-14 12:25:37,564 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 12:25:37,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-14 12:25:37,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 12:25:37,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-14 12:25:37,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2023-02-14 12:25:37,566 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-02-14 12:25:38,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 12:25:38,741 INFO L93 Difference]: Finished difference Result 117 states and 137 transitions. [2023-02-14 12:25:38,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-14 12:25:38,741 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 82 [2023-02-14 12:25:38,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 12:25:38,741 INFO L225 Difference]: With dead ends: 117 [2023-02-14 12:25:38,742 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 12:25:38,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2023-02-14 12:25:38,743 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 16 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-14 12:25:38,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 114 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-14 12:25:38,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 12:25:38,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 12:25:38,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 12:25:38,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 12:25:38,744 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2023-02-14 12:25:38,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 12:25:38,745 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 12:25:38,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 13 states have internal predecessors, (28), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2023-02-14 12:25:38,745 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 12:25:38,745 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 12:25:38,747 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 12:25:38,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-14 12:25:38,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 12:25:38,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 12:25:40,442 INFO L895 garLoopResultBuilder]: At program point L60(line 60) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (<= 1 .cse0))) [2023-02-14 12:25:40,442 INFO L899 garLoopResultBuilder]: For program point L48(lines 46 58) no Hoare annotation was computed. [2023-02-14 12:25:40,442 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 22 63) the Hoare annotation is: true [2023-02-14 12:25:40,442 INFO L895 garLoopResultBuilder]: At program point L36-2(lines 36 44) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (<= .cse4 1)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse4))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3) (and .cse1 .cse2 (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) (<= (div (- |ULTIMATE.start_main_~d~0#1|) (- 2)) |ULTIMATE.start_main_~r~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse4) .cse3)))) [2023-02-14 12:25:40,442 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 12:25:40,443 INFO L899 garLoopResultBuilder]: For program point L61(line 61) no Hoare annotation was computed. [2023-02-14 12:25:40,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 12:25:40,443 INFO L895 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1) [2023-02-14 12:25:40,443 INFO L895 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: (and (<= (mod |ULTIMATE.start_main_~B~0#1| 4294967296) 1) (<= (mod |ULTIMATE.start_main_~A~0#1| 4294967296) 1)) [2023-02-14 12:25:40,443 INFO L895 garLoopResultBuilder]: At program point L37(line 37) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (<= .cse4 1)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse4))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3) (and .cse1 .cse2 (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) (<= (div (- |ULTIMATE.start_main_~d~0#1|) (- 2)) |ULTIMATE.start_main_~r~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse4) .cse3)))) [2023-02-14 12:25:40,443 INFO L895 garLoopResultBuilder]: At program point L37-1(line 37) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (<= .cse4 1)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse4))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3) (and .cse1 .cse2 (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) (<= (div (- |ULTIMATE.start_main_~d~0#1|) (- 2)) |ULTIMATE.start_main_~r~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse4) .cse3)))) [2023-02-14 12:25:40,443 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 12:25:40,443 INFO L899 garLoopResultBuilder]: For program point L29(line 29) no Hoare annotation was computed. [2023-02-14 12:25:40,443 INFO L899 garLoopResultBuilder]: For program point L54(lines 54 57) no Hoare annotation was computed. [2023-02-14 12:25:40,443 INFO L895 garLoopResultBuilder]: At program point L54-2(lines 46 58) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse3 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= .cse3 1)) (.cse2 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse3))) (or (and .cse0 (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) (<= (div (- |ULTIMATE.start_main_~d~0#1|) (- 2)) |ULTIMATE.start_main_~r~0#1|) (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) .cse2 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse1) |ULTIMATE.start_main_~r~0#1|) .cse3) .cse4) (and .cse0 (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse3) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (<= .cse3 (* 2 |ULTIMATE.start_main_~d~0#1|)) (<= 1 .cse3)) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1))))) [2023-02-14 12:25:40,444 INFO L895 garLoopResultBuilder]: At program point L46-1(lines 46 58) the Hoare annotation is: (let ((.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse1 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) (= |ULTIMATE.start_main_~q~0#1| 0) (= |ULTIMATE.start_main_~r~0#1| .cse1) (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse0)) (and (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse1) (= |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~q~0#1|) (exists ((|aux_div_aux_mod_ULTIMATE.start_main_~B~0#1_45_56| Int) (|aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| Int) (|aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| Int)) (let ((.cse3 (* |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 4294967296))) (let ((.cse2 (+ .cse3 |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| (* |aux_div_aux_mod_ULTIMATE.start_main_~B~0#1_45_56| 4294967296)))) (and (<= .cse2 1) (<= (+ .cse1 1) (+ (* |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 8589934592) (* |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 2))) (<= 0 .cse2) (< (+ .cse3 |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67|) 4294967296) (= (+ (* |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) .cse1) (< |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 4294967296))))) (= |ULTIMATE.start_main_~q~0#1| 1) (<= .cse1 (* 2 |ULTIMATE.start_main_~d~0#1|)) (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse1) (<= 1 .cse1)))) [2023-02-14 12:25:40,444 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 12:25:40,444 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse4 (mod |ULTIMATE.start_main_~A~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~B~0#1| 4294967296))) (let ((.cse1 (<= 1 .cse0)) (.cse2 (<= .cse4 1)) (.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse4))) (or (and (<= .cse0 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse0) .cse1 .cse2 (= |ULTIMATE.start_main_~q~0#1| 0) .cse3) (and .cse1 .cse2 (= (* 2 .cse0) |ULTIMATE.start_main_~d~0#1|) (<= (div (- |ULTIMATE.start_main_~d~0#1|) (- 2)) |ULTIMATE.start_main_~r~0#1|) (= (* |ULTIMATE.start_main_~p~0#1| .cse0) |ULTIMATE.start_main_~d~0#1|) (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse0) |ULTIMATE.start_main_~r~0#1|) .cse4) .cse3)))) [2023-02-14 12:25:40,444 INFO L902 garLoopResultBuilder]: At program point L26(line 26) the Hoare annotation is: true [2023-02-14 12:25:40,445 INFO L899 garLoopResultBuilder]: For program point L26-1(line 26) no Hoare annotation was computed. [2023-02-14 12:25:40,445 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse3 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse0 (<= .cse3 1)) (.cse2 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|)) (.cse4 (= |ULTIMATE.start_main_~r~0#1| .cse3))) (or (and .cse0 (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) (<= (div (- |ULTIMATE.start_main_~d~0#1|) (- 2)) |ULTIMATE.start_main_~r~0#1|) (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) .cse2 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse1) |ULTIMATE.start_main_~r~0#1|) .cse3) .cse4) (and .cse0 (<= (+ |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~r~0#1|) .cse3) (<= 0 |ULTIMATE.start_main_~r~0#1|) (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (<= .cse3 (* 2 |ULTIMATE.start_main_~d~0#1|)) (<= 1 .cse3)) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse4 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1))))) [2023-02-14 12:25:40,445 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse1 (mod |ULTIMATE.start_main_~B~0#1| 4294967296)) (.cse0 (mod |ULTIMATE.start_main_~A~0#1| 4294967296))) (let ((.cse3 (= |ULTIMATE.start_main_~r~0#1| .cse0)) (.cse2 (= (* |ULTIMATE.start_main_~p~0#1| .cse1) |ULTIMATE.start_main_~d~0#1|))) (or (and (<= .cse0 1) (= (* 2 .cse1) |ULTIMATE.start_main_~d~0#1|) (<= (div (- |ULTIMATE.start_main_~d~0#1|) (- 2)) |ULTIMATE.start_main_~r~0#1|) (< |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~d~0#1|) .cse2 (= (+ (* |ULTIMATE.start_main_~q~0#1| .cse1) |ULTIMATE.start_main_~r~0#1|) .cse0) .cse3) (and (<= .cse1 1) (= |ULTIMATE.start_main_~p~0#1| 1) (= |ULTIMATE.start_main_~d~0#1| .cse1) (= |ULTIMATE.start_main_~q~0#1| 0) .cse3 (<= (+ |ULTIMATE.start_main_~r~0#1| 1) .cse1)) (and (exists ((|aux_div_aux_mod_ULTIMATE.start_main_~B~0#1_45_56| Int) (|aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| Int) (|aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| Int)) (let ((.cse5 (* |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 4294967296))) (let ((.cse4 (+ .cse5 |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| (* |aux_div_aux_mod_ULTIMATE.start_main_~B~0#1_45_56| 4294967296)))) (and (<= .cse4 1) (<= (+ .cse0 1) (+ (* |aux_div_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 8589934592) (* |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 2))) (<= 0 .cse4) (< (+ .cse5 |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67|) 4294967296) (<= 0 |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67|) (= (+ (* |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| |ULTIMATE.start_main_~q~0#1|) |ULTIMATE.start_main_~r~0#1|) .cse0) (< |aux_mod_aux_mod_aux_mod_ULTIMATE.start_main_~B~0#1_45_56_67| 4294967296))))) (<= |ULTIMATE.start_main_~d~0#1| .cse0) (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (<= .cse0 (* 2 |ULTIMATE.start_main_~d~0#1|)) (<= 1 .cse0))))) [2023-02-14 12:25:40,446 INFO L899 garLoopResultBuilder]: For program point L39(lines 36 44) no Hoare annotation was computed. [2023-02-14 12:25:40,446 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-02-14 12:25:40,446 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 13) no Hoare annotation was computed. [2023-02-14 12:25:40,446 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 13) the Hoare annotation is: true [2023-02-14 12:25:40,446 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 11 13) no Hoare annotation was computed. [2023-02-14 12:25:40,446 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2023-02-14 12:25:40,446 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2023-02-14 12:25:40,447 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2023-02-14 12:25:40,447 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2023-02-14 12:25:40,447 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 14 20) the Hoare annotation is: true [2023-02-14 12:25:40,447 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2023-02-14 12:25:40,450 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 12:25:40,452 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 12:25:40,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 12:25:40 BoogieIcfgContainer [2023-02-14 12:25:40,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 12:25:40,465 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 12:25:40,465 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 12:25:40,466 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 12:25:40,466 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:25:20" (3/4) ... [2023-02-14 12:25:40,468 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 12:25:40,473 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2023-02-14 12:25:40,473 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-14 12:25:40,476 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2023-02-14 12:25:40,477 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 12:25:40,477 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 12:25:40,477 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 12:25:40,504 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 12:25:40,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 12:25:40,504 INFO L158 Benchmark]: Toolchain (without parser) took 20925.62ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 109.8MB in the beginning and 90.3MB in the end (delta: 19.5MB). Peak memory consumption was 82.3MB. Max. memory is 16.1GB. [2023-02-14 12:25:40,505 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 12:25:40,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 174.88ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 98.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 12:25:40,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.41ms. Allocated memory is still 138.4MB. Free memory was 98.9MB in the beginning and 97.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 12:25:40,505 INFO L158 Benchmark]: Boogie Preprocessor took 17.54ms. Allocated memory is still 138.4MB. Free memory was 97.3MB in the beginning and 96.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 12:25:40,506 INFO L158 Benchmark]: RCFGBuilder took 324.93ms. Allocated memory is still 138.4MB. Free memory was 96.1MB in the beginning and 85.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 12:25:40,506 INFO L158 Benchmark]: TraceAbstraction took 20337.82ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 84.7MB in the beginning and 93.5MB in the end (delta: -8.8MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. [2023-02-14 12:25:40,506 INFO L158 Benchmark]: Witness Printer took 38.64ms. Allocated memory is still 201.3MB. Free memory was 93.5MB in the beginning and 90.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 12:25:40,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 107.0MB. Free memory is still 71.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 174.88ms. Allocated memory is still 138.4MB. Free memory was 109.4MB in the beginning and 98.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.41ms. Allocated memory is still 138.4MB. Free memory was 98.9MB in the beginning and 97.3MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.54ms. Allocated memory is still 138.4MB. Free memory was 97.3MB in the beginning and 96.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 324.93ms. Allocated memory is still 138.4MB. Free memory was 96.1MB in the beginning and 85.3MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 20337.82ms. Allocated memory was 138.4MB in the beginning and 201.3MB in the end (delta: 62.9MB). Free memory was 84.7MB in the beginning and 93.5MB in the end (delta: -8.8MB). Peak memory consumption was 55.0MB. Max. memory is 16.1GB. * Witness Printer took 38.64ms. Allocated memory is still 201.3MB. Free memory was 93.5MB in the beginning and 90.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 20.3s, OverallIterations: 8, TraceHistogramMax: 11, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 216 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 192 mSDsluCounter, 907 SdHoareTripleChecker+Invalid, 3.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 652 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1529 IncrementalHoareTripleChecker+Invalid, 1696 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 255 mSDtfsCounter, 1529 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 514 GetRequests, 414 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=98occurred in iteration=7, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 23 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 68 PreInvPairs, 92 NumberOfFragments, 866 HoareAnnotationTreeSize, 68 FomulaSimplifications, 91 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 15 FomulaSimplificationsInter, 1035 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 374 NumberOfCodeBlocks, 374 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 509 ConstructedInterpolants, 3 QuantifiedInterpolants, 4048 SizeOfPredicates, 22 NumberOfNonLiveVariables, 696 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 743/798 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((((((A % 4294967296 <= 1 && 2 * (B % 4294967296) == d) && -d / -2 <= r) && r < d) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296) || ((((((A % 4294967296 <= 1 && d + r <= A % 4294967296) && 0 <= r) && q == 1) && p * (B % 4294967296) == d) && A % 4294967296 <= 2 * d) && 1 <= A % 4294967296)) || (((((B % 4294967296 <= 1 && p == 1) && d == B % 4294967296) && q == 0) && r == A % 4294967296) && r + 1 <= B % 4294967296) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: ((((((B % 4294967296 <= 1 && p == 1) && d == B % 4294967296) && 1 <= B % 4294967296) && A % 4294967296 <= 1) && q == 0) && r == A % 4294967296) || ((((((1 <= B % 4294967296 && A % 4294967296 <= 1) && 2 * (B % 4294967296) == d) && -d / -2 <= r) && p * (B % 4294967296) == d) && q * (B % 4294967296) + r == A % 4294967296) && r == A % 4294967296) RESULT: Ultimate proved your program to be correct! [2023-02-14 12:25:40,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE