./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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/dijkstra-u_unwindbound2.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 ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca --- Real Ultimate output --- This is Ultimate 0.2.2-?-2329fc7 [2023-02-14 00:20:53,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-14 00:20:53,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-14 00:20:53,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-14 00:20:53,570 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-14 00:20:53,580 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-14 00:20:53,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-14 00:20:53,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-14 00:20:53,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-14 00:20:53,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-14 00:20:53,593 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-14 00:20:53,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-14 00:20:53,595 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-14 00:20:53,597 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-14 00:20:53,598 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-14 00:20:53,599 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-14 00:20:53,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-14 00:20:53,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-14 00:20:53,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-14 00:20:53,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-14 00:20:53,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-14 00:20:53,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-14 00:20:53,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-14 00:20:53,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-14 00:20:53,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-14 00:20:53,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-14 00:20:53,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-14 00:20:53,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-14 00:20:53,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-14 00:20:53,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-14 00:20:53,629 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-14 00:20:53,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-14 00:20:53,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-14 00:20:53,632 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-14 00:20:53,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-14 00:20:53,633 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-14 00:20:53,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-14 00:20:53,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-14 00:20:53,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-14 00:20:53,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-14 00:20:53,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-14 00:20:53,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-14 00:20:53,664 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-14 00:20:53,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-14 00:20:53,665 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-14 00:20:53,665 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-14 00:20:53,666 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-14 00:20:53,666 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-14 00:20:53,667 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-14 00:20:53,667 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-14 00:20:53,667 INFO L138 SettingsManager]: * Use SBE=true [2023-02-14 00:20:53,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-14 00:20:53,668 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-14 00:20:53,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-14 00:20:53,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-14 00:20:53,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-14 00:20:53,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-14 00:20:53,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-14 00:20:53,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-14 00:20:53,669 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-14 00:20:53,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-14 00:20:53,670 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-14 00:20:53,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-14 00:20:53,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-14 00:20:53,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-14 00:20:53,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-14 00:20:53,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 00:20:53,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-14 00:20:53,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-14 00:20:53,671 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-14 00:20:53,671 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-14 00:20:53,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-14 00:20:53,671 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-14 00:20:53,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-14 00:20:53,672 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-14 00:20:53,672 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-14 00:20:53,672 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-14 00:20:53,672 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee8fbf7ad7c769bb660b4c416c89e8a6070f0c88820552e25f4a5ca5398fd5ca [2023-02-14 00:20:53,910 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-14 00:20:53,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-14 00:20:53,958 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-14 00:20:53,959 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-14 00:20:53,959 INFO L275 PluginConnector]: CDTParser initialized [2023-02-14 00:20:53,960 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2023-02-14 00:20:55,076 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-14 00:20:55,277 INFO L351 CDTParser]: Found 1 translation units. [2023-02-14 00:20:55,277 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/dijkstra-u_unwindbound2.c [2023-02-14 00:20:55,283 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd932ba8/32c6b399045c4c0d9fc10504d9788965/FLAG319ce4459 [2023-02-14 00:20:55,298 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0fd932ba8/32c6b399045c4c0d9fc10504d9788965 [2023-02-14 00:20:55,300 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-14 00:20:55,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-14 00:20:55,305 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-14 00:20:55,305 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-14 00:20:55,308 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-14 00:20:55,308 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,309 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7376612a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55, skipping insertion in model container [2023-02-14 00:20:55,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-14 00:20:55,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-14 00:20:55,478 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/dijkstra-u_unwindbound2.c[525,538] [2023-02-14 00:20:55,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 00:20:55,526 INFO L203 MainTranslator]: Completed pre-run [2023-02-14 00:20:55,537 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/dijkstra-u_unwindbound2.c[525,538] [2023-02-14 00:20:55,560 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-14 00:20:55,576 INFO L208 MainTranslator]: Completed translation [2023-02-14 00:20:55,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55 WrapperNode [2023-02-14 00:20:55,577 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-14 00:20:55,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-14 00:20:55,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-14 00:20:55,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-14 00:20:55,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,627 INFO L138 Inliner]: procedures = 14, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 64 [2023-02-14 00:20:55,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-14 00:20:55,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-14 00:20:55,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-14 00:20:55,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-14 00:20:55,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,638 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,639 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,653 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,659 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-14 00:20:55,663 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-14 00:20:55,663 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-14 00:20:55,664 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-14 00:20:55,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (1/1) ... [2023-02-14 00:20:55,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-14 00:20:55,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:20:55,694 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 00:20:55,714 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 00:20:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-14 00:20:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-14 00:20:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-14 00:20:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-14 00:20:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-02-14 00:20:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-02-14 00:20:55,774 INFO L235 CfgBuilder]: Building ICFG [2023-02-14 00:20:55,776 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-14 00:20:55,986 INFO L276 CfgBuilder]: Performing block encoding [2023-02-14 00:20:55,991 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-14 00:20:55,991 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-14 00:20:55,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:20:55 BoogieIcfgContainer [2023-02-14 00:20:55,993 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-14 00:20:55,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-14 00:20:55,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-14 00:20:55,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-14 00:20:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 12:20:55" (1/3) ... [2023-02-14 00:20:55,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765ca7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:20:55, skipping insertion in model container [2023-02-14 00:20:55,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 12:20:55" (2/3) ... [2023-02-14 00:20:55,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@765ca7cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 12:20:55, skipping insertion in model container [2023-02-14 00:20:55,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:20:55" (3/3) ... [2023-02-14 00:20:56,000 INFO L112 eAbstractionObserver]: Analyzing ICFG dijkstra-u_unwindbound2.c [2023-02-14 00:20:56,014 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-14 00:20:56,017 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-14 00:20:56,064 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-14 00:20:56,070 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;@25109aec, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-14 00:20:56,070 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-14 00:20:56,074 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-02-14 00:20:56,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-14 00:20:56,079 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:20:56,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:20:56,081 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:20:56,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:20:56,087 INFO L85 PathProgramCache]: Analyzing trace with hash -797370321, now seen corresponding path program 1 times [2023-02-14 00:20:56,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:20:56,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102926876] [2023-02-14 00:20:56,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:20:56,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:20:56,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:20:56,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:20:56,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102926876] [2023-02-14 00:20:56,217 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 00:20:56,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037310864] [2023-02-14 00:20:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:20:56,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:20:56,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:20:56,225 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 00:20:56,245 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 00:20:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:20:56,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-14 00:20:56,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:20:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:20:56,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 00:20:56,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037310864] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:20:56,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:20:56,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-14 00:20:56,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010071489] [2023-02-14 00:20:56,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:20:56,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-14 00:20:56,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:20:56,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-14 00:20:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-14 00:20:56,358 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:20:56,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:20:56,376 INFO L93 Difference]: Finished difference Result 57 states and 97 transitions. [2023-02-14 00:20:56,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-14 00:20:56,378 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-02-14 00:20:56,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:20:56,384 INFO L225 Difference]: With dead ends: 57 [2023-02-14 00:20:56,384 INFO L226 Difference]: Without dead ends: 26 [2023-02-14 00:20:56,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 00:20:56,389 INFO L413 NwaCegarLoop]: 42 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, 42 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 00:20:56,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:20:56,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2023-02-14 00:20:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2023-02-14 00:20:56,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 15 states have (on average 1.4) internal successors, (21), 16 states have internal predecessors, (21), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-14 00:20:56,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 38 transitions. [2023-02-14 00:20:56,419 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 38 transitions. Word has length 10 [2023-02-14 00:20:56,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:20:56,420 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 38 transitions. [2023-02-14 00:20:56,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:20:56,420 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 38 transitions. [2023-02-14 00:20:56,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-02-14 00:20:56,421 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:20:56,421 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:20:56,429 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 00:20:56,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-02-14 00:20:56,627 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:20:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:20:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1698606518, now seen corresponding path program 1 times [2023-02-14 00:20:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:20:56,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235227433] [2023-02-14 00:20:56,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:20:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:20:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:20:56,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:20:56,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235227433] [2023-02-14 00:20:56,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-02-14 00:20:56,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727525332] [2023-02-14 00:20:56,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:20:56,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:20:56,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:20:56,665 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 00:20:56,668 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 00:20:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:20:56,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-14 00:20:56,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:20:56,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:20:56,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 00:20:56,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727525332] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:20:56,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:20:56,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-14 00:20:56,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882230167] [2023-02-14 00:20:56,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:20:56,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-14 00:20:56,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:20:56,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-14 00:20:56,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 00:20:56,792 INFO L87 Difference]: Start difference. First operand 26 states and 38 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:20:56,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:20:56,815 INFO L93 Difference]: Finished difference Result 47 states and 70 transitions. [2023-02-14 00:20:56,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-14 00:20:56,816 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-02-14 00:20:56,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:20:56,817 INFO L225 Difference]: With dead ends: 47 [2023-02-14 00:20:56,817 INFO L226 Difference]: Without dead ends: 28 [2023-02-14 00:20:56,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-14 00:20:56,819 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 00:20:56,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:20:56,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-02-14 00:20:56,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-02-14 00:20:56,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-14 00:20:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions. [2023-02-14 00:20:56,833 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 12 [2023-02-14 00:20:56,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:20:56,833 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 40 transitions. [2023-02-14 00:20:56,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:20:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions. [2023-02-14 00:20:56,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 00:20:56,835 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:20:56,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:20:56,841 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-14 00:20:57,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-02-14 00:20:57,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:20:57,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:20:57,037 INFO L85 PathProgramCache]: Analyzing trace with hash 776097594, now seen corresponding path program 1 times [2023-02-14 00:20:57,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:20:57,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596420377] [2023-02-14 00:20:57,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:20:57,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:20:57,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:20:57,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452397281] [2023-02-14 00:20:57,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:20:57,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:20:57,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:20:57,060 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 00:20:57,062 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 00:20:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:20:57,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 00:20:57,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:20:57,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:20:57,151 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 00:20:57,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:20:57,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596420377] [2023-02-14 00:20:57,152 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:20:57,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452397281] [2023-02-14 00:20:57,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452397281] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:20:57,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:20:57,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-14 00:20:57,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234755687] [2023-02-14 00:20:57,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:20:57,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 00:20:57,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:20:57,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 00:20:57,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 00:20:57,154 INFO L87 Difference]: Start difference. First operand 28 states and 40 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:20:57,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:20:57,174 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-14 00:20:57,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 00:20:57,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-14 00:20:57,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:20:57,176 INFO L225 Difference]: With dead ends: 41 [2023-02-14 00:20:57,176 INFO L226 Difference]: Without dead ends: 32 [2023-02-14 00:20:57,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 00:20:57,177 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 00:20:57,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:20:57,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2023-02-14 00:20:57,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2023-02-14 00:20:57,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 20 states have (on average 1.35) internal successors, (27), 21 states have internal predecessors, (27), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-02-14 00:20:57,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 44 transitions. [2023-02-14 00:20:57,184 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 44 transitions. Word has length 13 [2023-02-14 00:20:57,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:20:57,184 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 44 transitions. [2023-02-14 00:20:57,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:20:57,185 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 44 transitions. [2023-02-14 00:20:57,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-14 00:20:57,185 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:20:57,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:20:57,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-14 00:20:57,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:20:57,391 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:20:57,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:20:57,393 INFO L85 PathProgramCache]: Analyzing trace with hash 777587144, now seen corresponding path program 1 times [2023-02-14 00:20:57,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:20:57,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836465430] [2023-02-14 00:20:57,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:20:57,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:20:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:20:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:20:57,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:20:57,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836465430] [2023-02-14 00:20:57,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836465430] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:20:57,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:20:57,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-14 00:20:57,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918418403] [2023-02-14 00:20:57,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:20:57,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 00:20:57,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:20:57,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 00:20:57,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-02-14 00:20:57,893 INFO L87 Difference]: Start difference. First operand 31 states and 44 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:20:59,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:01,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:04,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:04,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:21:04,285 INFO L93 Difference]: Finished difference Result 64 states and 96 transitions. [2023-02-14 00:21:04,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 00:21:04,286 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-14 00:21:04,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:21:04,287 INFO L225 Difference]: With dead ends: 64 [2023-02-14 00:21:04,287 INFO L226 Difference]: Without dead ends: 45 [2023-02-14 00:21:04,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-14 00:21:04,288 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 11 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-14 00:21:04,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 154 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 86 Invalid, 3 Unknown, 0 Unchecked, 6.3s Time] [2023-02-14 00:21:04,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-02-14 00:21:04,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2023-02-14 00:21:04,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 25 states have internal predecessors, (31), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-14 00:21:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 60 transitions. [2023-02-14 00:21:04,302 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 60 transitions. Word has length 13 [2023-02-14 00:21:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:21:04,303 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 60 transitions. [2023-02-14 00:21:04,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:21:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 60 transitions. [2023-02-14 00:21:04,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-02-14 00:21:04,304 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:21:04,304 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:21:04,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-14 00:21:04,304 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:21:04,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:21:04,305 INFO L85 PathProgramCache]: Analyzing trace with hash 84493759, now seen corresponding path program 1 times [2023-02-14 00:21:04,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:21:04,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882152307] [2023-02-14 00:21:04,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:04,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:21:04,313 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:21:04,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440358562] [2023-02-14 00:21:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:04,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:21:04,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:21:04,315 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 00:21:04,340 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 00:21:04,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:21:04,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-02-14 00:21:04,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:21:04,390 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:21:04,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 00:21:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:21:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:21:04,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882152307] [2023-02-14 00:21:04,415 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:21:04,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440358562] [2023-02-14 00:21:04,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440358562] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 00:21:04,415 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 00:21:04,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2023-02-14 00:21:04,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896209264] [2023-02-14 00:21:04,416 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 00:21:04,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 00:21:04,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:21:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 00:21:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-02-14 00:21:04,417 INFO L87 Difference]: Start difference. First operand 42 states and 60 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:21:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:21:04,441 INFO L93 Difference]: Finished difference Result 63 states and 92 transitions. [2023-02-14 00:21:04,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 00:21:04,441 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-02-14 00:21:04,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:21:04,442 INFO L225 Difference]: With dead ends: 63 [2023-02-14 00:21:04,442 INFO L226 Difference]: Without dead ends: 44 [2023-02-14 00:21:04,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-14 00:21:04,444 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 00:21:04,444 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 130 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:21:04,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-02-14 00:21:04,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2023-02-14 00:21:04,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 26 states have (on average 1.2692307692307692) internal successors, (33), 27 states have internal predecessors, (33), 15 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-02-14 00:21:04,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 62 transitions. [2023-02-14 00:21:04,455 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 62 transitions. Word has length 15 [2023-02-14 00:21:04,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:21:04,455 INFO L495 AbstractCegarLoop]: Abstraction has 44 states and 62 transitions. [2023-02-14 00:21:04,456 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:21:04,456 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 62 transitions. [2023-02-14 00:21:04,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 00:21:04,456 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:21:04,457 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:21:04,464 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 00:21:04,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:21:04,662 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:21:04,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:21:04,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2016757679, now seen corresponding path program 1 times [2023-02-14 00:21:04,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:21:04,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839657381] [2023-02-14 00:21:04,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:04,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:21:04,673 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:21:04,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446214741] [2023-02-14 00:21:04,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:04,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:21:04,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:21:04,675 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 00:21:04,677 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 00:21:04,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:21:04,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2023-02-14 00:21:04,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:21:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-14 00:21:04,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 00:21:04,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:21:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839657381] [2023-02-14 00:21:04,782 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:21:04,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446214741] [2023-02-14 00:21:04,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446214741] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:21:04,783 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-14 00:21:04,783 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-14 00:21:04,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611858470] [2023-02-14 00:21:04,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:21:04,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-14 00:21:04,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:21:04,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-14 00:21:04,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-14 00:21:04,785 INFO L87 Difference]: Start difference. First operand 44 states and 62 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:21:05,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:21:05,735 INFO L93 Difference]: Finished difference Result 62 states and 89 transitions. [2023-02-14 00:21:05,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-14 00:21:05,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 00:21:05,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:21:05,737 INFO L225 Difference]: With dead ends: 62 [2023-02-14 00:21:05,737 INFO L226 Difference]: Without dead ends: 59 [2023-02-14 00:21:05,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 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 00:21:05,738 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 8 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-02-14 00:21:05,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 125 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-02-14 00:21:05,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-02-14 00:21:05,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2023-02-14 00:21:05,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 32 states have (on average 1.28125) internal successors, (41), 34 states have internal predecessors, (41), 23 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-02-14 00:21:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 85 transitions. [2023-02-14 00:21:05,751 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 85 transitions. Word has length 16 [2023-02-14 00:21:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:21:05,752 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 85 transitions. [2023-02-14 00:21:05,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:21:05,752 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 85 transitions. [2023-02-14 00:21:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-02-14 00:21:05,753 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:21:05,753 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:21:05,761 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 00:21:05,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:21:05,959 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:21:05,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:21:05,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2015268129, now seen corresponding path program 1 times [2023-02-14 00:21:05,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:21:05,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968316865] [2023-02-14 00:21:05,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:05,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:21:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:21:06,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:21:06,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:21:06,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968316865] [2023-02-14 00:21:06,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968316865] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 00:21:06,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993681531] [2023-02-14 00:21:06,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:06,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:21:06,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:21:06,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 00:21:06,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-14 00:21:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:21:06,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2023-02-14 00:21:06,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:21:06,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:21:06,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-14 00:21:06,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993681531] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-14 00:21:06,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-14 00:21:06,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-02-14 00:21:06,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498990980] [2023-02-14 00:21:06,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-14 00:21:06,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-14 00:21:06,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:21:06,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-14 00:21:06,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-14 00:21:06,092 INFO L87 Difference]: Start difference. First operand 59 states and 85 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:21:06,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:21:06,115 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2023-02-14 00:21:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-14 00:21:06,116 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2023-02-14 00:21:06,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:21:06,117 INFO L225 Difference]: With dead ends: 71 [2023-02-14 00:21:06,117 INFO L226 Difference]: Without dead ends: 39 [2023-02-14 00:21:06,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-02-14 00:21:06,118 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 27 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 00:21:06,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 73 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:21:06,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2023-02-14 00:21:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2023-02-14 00:21:06,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.1481481481481481) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2023-02-14 00:21:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2023-02-14 00:21:06,127 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 16 [2023-02-14 00:21:06,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:21:06,127 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2023-02-14 00:21:06,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-14 00:21:06,127 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2023-02-14 00:21:06,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-14 00:21:06,128 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:21:06,128 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:21:06,136 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-02-14 00:21:06,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:21:06,334 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:21:06,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:21:06,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1484248551, now seen corresponding path program 1 times [2023-02-14 00:21:06,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:21:06,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186471130] [2023-02-14 00:21:06,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:06,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:21:06,341 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:21:06,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131701591] [2023-02-14 00:21:06,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:21:06,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:21:06,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:21:06,343 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 00:21:06,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-14 00:21:06,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:21:06,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-14 00:21:06,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:21:06,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:21:06,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 00:21:23,784 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-14 00:21:32,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-14 00:21:32,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:21:32,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186471130] [2023-02-14 00:21:32,184 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:21:32,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131701591] [2023-02-14 00:21:32,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131701591] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-14 00:21:32,184 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-14 00:21:32,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-02-14 00:21:32,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820750006] [2023-02-14 00:21:32,185 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-14 00:21:32,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-14 00:21:32,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:21:32,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-14 00:21:32,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-02-14 00:21:32,186 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:21:35,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:37,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:41,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:43,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:44,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:46,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:48,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:50,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:52,606 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:54,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:56,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:21:58,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:22:00,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:22:02,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:22:04,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:22:06,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:22:08,167 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2023-02-14 00:22:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:22:08,875 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2023-02-14 00:22:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-14 00:22:08,875 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-02-14 00:22:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:22:08,876 INFO L225 Difference]: With dead ends: 56 [2023-02-14 00:22:08,876 INFO L226 Difference]: Without dead ends: 29 [2023-02-14 00:22:08,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-02-14 00:22:08,877 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 24 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 20 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 36.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.3s IncrementalHoareTripleChecker+Time [2023-02-14 00:22:08,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 87 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 133 Invalid, 11 Unknown, 0 Unchecked, 36.3s Time] [2023-02-14 00:22:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2023-02-14 00:22:08,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2023-02-14 00:22:08,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-14 00:22:08,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-02-14 00:22:08,881 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2023-02-14 00:22:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:22:08,882 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-02-14 00:22:08,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 11 states have internal predecessors, (25), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-02-14 00:22:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-02-14 00:22:08,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-14 00:22:08,882 INFO L187 NwaCegarLoop]: Found error trace [2023-02-14 00:22:08,882 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:22:08,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-14 00:22:09,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:22:09,083 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-14 00:22:09,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-14 00:22:09,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1651095472, now seen corresponding path program 1 times [2023-02-14 00:22:09,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-14 00:22:09,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734570858] [2023-02-14 00:22:09,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:22:09,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-14 00:22:09,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-14 00:22:09,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1309386063] [2023-02-14 00:22:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-14 00:22:09,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-14 00:22:09,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-14 00:22:09,096 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-14 00:22:09,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-14 00:22:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-14 00:22:09,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-14 00:22:09,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-14 00:22:09,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-14 00:22:09,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-14 00:22:11,924 WARN L837 $PredicateComparison]: unable to prove that (or (forall ((|ULTIMATE.start_main_~h~0#1| Int)) (not (= (mod (+ (* |c_ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~h~0#1| 4294967284) (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~r~0#1| 4294967280) (* |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~h~0#1| |ULTIMATE.start_main_~h~0#1|) (* 4294967292 |c_ULTIMATE.start_main_~p~0#1|) (* 4294967295 |ULTIMATE.start_main_~h~0#1|) (* |ULTIMATE.start_main_~h~0#1| |c_ULTIMATE.start_main_~r~0#1| 12) (* |c_ULTIMATE.start_main_~n~0#1| |c_ULTIMATE.start_main_~p~0#1| 16)) 4294967296) 0))) (= (mod (+ (* |c_ULTIMATE.start_main_~p~0#1| |c_ULTIMATE.start_main_~p~0#1|) |c_ULTIMATE.start_main_~r~0#1| (* |c_ULTIMATE.start_main_~n~0#1| 4294967295)) 4294967296) 0)) is different from false [2023-02-14 00:22:11,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-14 00:22:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734570858] [2023-02-14 00:22:11,927 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-14 00:22:11,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309386063] [2023-02-14 00:22:11,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309386063] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-14 00:22:11,927 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-14 00:22:11,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2023-02-14 00:22:11,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873674779] [2023-02-14 00:22:11,928 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-14 00:22:11,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-14 00:22:11,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-14 00:22:11,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-14 00:22:11,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=55, Unknown=1, NotChecked=14, Total=90 [2023-02-14 00:22:11,929 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-14 00:22:11,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-14 00:22:11,978 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-02-14 00:22:11,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-14 00:22:11,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-02-14 00:22:11,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-14 00:22:11,979 INFO L225 Difference]: With dead ends: 24 [2023-02-14 00:22:11,979 INFO L226 Difference]: Without dead ends: 0 [2023-02-14 00:22:11,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=33, Invalid=80, Unknown=1, NotChecked=18, Total=132 [2023-02-14 00:22:11,980 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-14 00:22:11,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 55 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-14 00:22:11,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-02-14 00:22:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-02-14 00:22:11,981 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 00:22:11,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-02-14 00:22:11,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2023-02-14 00:22:11,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-14 00:22:11,981 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-02-14 00:22:11,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-14 00:22:11,981 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-02-14 00:22:11,981 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-02-14 00:22:11,983 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-14 00:22:11,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-14 00:22:12,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-14 00:22:12,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-02-14 00:22:14,150 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 32) no Hoare annotation was computed. [2023-02-14 00:22:14,150 INFO L899 garLoopResultBuilder]: For program point L52(lines 52 55) no Hoare annotation was computed. [2023-02-14 00:22:14,150 INFO L895 garLoopResultBuilder]: At program point L52-2(lines 38 56) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 .cse1 (<= 1 ~counter~0) (= |ULTIMATE.start_main_~q~0#1| 1) .cse2 (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~q~0#1| 4294967296))) (and (<= 2 ~counter~0) .cse0 .cse1 .cse2))) [2023-02-14 00:22:14,151 INFO L899 garLoopResultBuilder]: For program point L44(lines 38 56) no Hoare annotation was computed. [2023-02-14 00:22:14,151 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 20 61) the Hoare annotation is: true [2023-02-14 00:22:14,151 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~q~0#1| 4294967296))) [2023-02-14 00:22:14,151 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-02-14 00:22:14,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-02-14 00:22:14,151 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2023-02-14 00:22:14,151 INFO L895 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~q~0#1| 4294967296))) [2023-02-14 00:22:14,151 INFO L899 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2023-02-14 00:22:14,151 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-02-14 00:22:14,151 INFO L895 garLoopResultBuilder]: At program point L58(line 58) the Hoare annotation is: (and (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0)) [2023-02-14 00:22:14,151 INFO L895 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~q~0#1| 4294967296))) [2023-02-14 00:22:14,151 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-02-14 00:22:14,151 INFO L899 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 56) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L895 garLoopResultBuilder]: At program point L38-2(lines 38 56) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|)) [2023-02-14 00:22:14,152 INFO L899 garLoopResultBuilder]: For program point L30-1(lines 30 35) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L895 garLoopResultBuilder]: At program point L30-3(lines 30 35) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_main_~p~0#1| 0)) (.cse1 (= |ULTIMATE.start_main_~h~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|))) (or (and .cse0 (<= 0 ~counter~0) .cse1 (= |ULTIMATE.start_main_~q~0#1| 1) .cse2) (and .cse0 .cse1 (<= 1 ~counter~0) .cse2))) [2023-02-14 00:22:14,152 INFO L899 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L895 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~q~0#1| 4294967296))) [2023-02-14 00:22:14,152 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~q~0#1| 4294967296))) [2023-02-14 00:22:14,152 INFO L895 garLoopResultBuilder]: At program point L39-1(line 39) the Hoare annotation is: (and (<= 2 ~counter~0) (= |ULTIMATE.start_main_~p~0#1| 0) (= |ULTIMATE.start_main_~h~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 1) (= |ULTIMATE.start_main_~n~0#1| |ULTIMATE.start_main_~r~0#1|) (< (mod |ULTIMATE.start_main_~n~0#1| 4294967296) (mod |ULTIMATE.start_main_~q~0#1| 4294967296))) [2023-02-14 00:22:14,152 INFO L899 garLoopResultBuilder]: For program point L13(lines 13 14) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 15) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L899 garLoopResultBuilder]: For program point L12-2(lines 11 17) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 11 17) no Hoare annotation was computed. [2023-02-14 00:22:14,152 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 11 17) the Hoare annotation is: true [2023-02-14 00:22:14,153 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) no Hoare annotation was computed. [2023-02-14 00:22:14,155 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-14 00:22:14,156 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-14 00:22:14,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 12:22:14 BoogieIcfgContainer [2023-02-14 00:22:14,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-14 00:22:14,170 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-14 00:22:14,170 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-14 00:22:14,171 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-14 00:22:14,171 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 12:20:55" (3/4) ... [2023-02-14 00:22:14,173 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-02-14 00:22:14,178 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2023-02-14 00:22:14,182 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2023-02-14 00:22:14,182 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-02-14 00:22:14,183 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-02-14 00:22:14,183 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-02-14 00:22:14,216 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-02-14 00:22:14,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-14 00:22:14,217 INFO L158 Benchmark]: Toolchain (without parser) took 78914.47ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 100.9MB in the beginning and 46.4MB in the end (delta: 54.5MB). Peak memory consumption was 81.8MB. Max. memory is 16.1GB. [2023-02-14 00:22:14,217 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 111.1MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-14 00:22:14,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 272.68ms. Allocated memory is still 134.2MB. Free memory was 100.4MB in the beginning and 89.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-14 00:22:14,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.42ms. Allocated memory is still 134.2MB. Free memory was 89.4MB in the beginning and 87.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 00:22:14,218 INFO L158 Benchmark]: Boogie Preprocessor took 34.00ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 86.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-14 00:22:14,219 INFO L158 Benchmark]: RCFGBuilder took 329.93ms. Allocated memory is still 134.2MB. Free memory was 86.3MB in the beginning and 102.3MB in the end (delta: -16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-02-14 00:22:14,219 INFO L158 Benchmark]: TraceAbstraction took 78174.32ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 101.7MB in the beginning and 49.5MB in the end (delta: 52.2MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. [2023-02-14 00:22:14,219 INFO L158 Benchmark]: Witness Printer took 45.91ms. Allocated memory is still 161.5MB. Free memory was 49.5MB in the beginning and 46.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-02-14 00:22:14,220 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 111.1MB. Free memory is still 86.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 272.68ms. Allocated memory is still 134.2MB. Free memory was 100.4MB in the beginning and 89.4MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.42ms. Allocated memory is still 134.2MB. Free memory was 89.4MB in the beginning and 87.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 34.00ms. Allocated memory is still 134.2MB. Free memory was 87.7MB in the beginning and 86.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 329.93ms. Allocated memory is still 134.2MB. Free memory was 86.3MB in the beginning and 102.3MB in the end (delta: -16.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 78174.32ms. Allocated memory was 134.2MB in the beginning and 161.5MB in the end (delta: 27.3MB). Free memory was 101.7MB in the beginning and 49.5MB in the end (delta: 52.2MB). Peak memory consumption was 81.5MB. Max. memory is 16.1GB. * Witness Printer took 45.91ms. Allocated memory is still 161.5MB. Free memory was 49.5MB in the beginning and 46.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. 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: 14]: 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 2 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 78.1s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 44.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 91 SdHoareTripleChecker+Valid, 43.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 897 SdHoareTripleChecker+Invalid, 43.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 591 mSDsCounter, 42 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 356 IncrementalHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 42 mSolverCounterUnsat, 306 mSDtfsCounter, 356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 117 SyntacticMatches, 5 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=6, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 79 PreInvPairs, 96 NumberOfFragments, 240 HoareAnnotationTreeSize, 79 FomulaSimplifications, 35 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 507 FormulaSimplificationTreeSizeReductionInter, 1.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 29.4s InterpolantComputationTime, 172 NumberOfCodeBlocks, 172 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 897 SizeOfPredicates, 10 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 64 ConjunctsInUnsatCore, 12 InterpolantComputations, 6 PerfectInterpolantSequences, 13/22 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: 38]: Loop Invariant Derived loop invariant: (((((p == 0 && h == 0) && 1 <= counter) && q == 1) && n == r) && n % 4294967296 < q % 4294967296) || (((2 <= counter && p == 0) && h == 0) && n == r) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((p == 0 && 0 <= counter) && h == 0) && q == 1) && n == r) || (((p == 0 && h == 0) && 1 <= counter) && n == r) RESULT: Ultimate proved your program to be correct! [2023-02-14 00:22:14,259 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