./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/num_conversion_2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 26d01a9c 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/bitvector/num_conversion_2.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 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:19:30,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:19:30,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:19:30,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:19:30,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:19:30,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:19:30,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:19:30,564 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:19:30,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:19:30,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:19:30,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:19:30,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:19:30,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:19:30,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:19:30,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:19:30,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:19:30,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:19:30,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:19:30,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:19:30,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:19:30,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:19:30,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:19:30,584 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:19:30,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:19:30,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:19:30,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:19:30,598 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:19:30,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:19:30,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:19:30,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:19:30,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:19:30,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:19:30,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:19:30,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:19:30,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:19:30,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:19:30,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:19:30,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:19:30,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:19:30,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:19:30,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:19:30,617 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-02-17 00:19:30,631 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:19:30,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:19:30,634 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:19:30,634 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:19:30,634 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:19:30,635 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:19:30,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:19:30,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:19:30,635 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:19:30,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:19:30,636 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:19:30,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 00:19:30,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:19:30,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:19:30,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:19:30,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:19:30,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:19:30,637 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:19:30,637 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:19:30,638 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:19:30,638 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:19:30,638 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:19:30,638 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:19:30,638 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:19:30,638 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:19:30,639 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:19:30,639 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:19:30,639 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:19:30,639 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 00:19:30,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 00:19:30,639 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:19:30,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:19:30,640 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:19:30,640 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:19:30,640 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:19:30,640 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-17 00:19:30,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:19:30,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:19:30,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:19:30,851 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:19:30,851 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:19:30,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 00:19:32,081 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:19:32,282 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:19:32,282 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 00:19:32,288 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbffc741/18e50be970c44c0f90fdaa42385c379e/FLAG72dc05cac [2023-02-17 00:19:32,299 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbbffc741/18e50be970c44c0f90fdaa42385c379e [2023-02-17 00:19:32,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:19:32,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:19:32,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:19:32,303 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:19:32,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:19:32,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f9048fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32, skipping insertion in model container [2023-02-17 00:19:32,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,314 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:19:32,325 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:19:32,409 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/bitvector/num_conversion_2.c[685,698] [2023-02-17 00:19:32,418 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:19:32,426 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:19:32,436 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/bitvector/num_conversion_2.c[685,698] [2023-02-17 00:19:32,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:19:32,450 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:19:32,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32 WrapperNode [2023-02-17 00:19:32,451 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:19:32,452 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:19:32,452 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:19:32,452 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:19:32,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,461 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,472 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-17 00:19:32,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:19:32,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:19:32,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:19:32,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:19:32,479 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,486 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,494 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,497 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,503 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:19:32,504 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:19:32,504 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:19:32,504 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:19:32,506 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (1/1) ... [2023-02-17 00:19:32,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:19:32,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:19:32,541 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) [2023-02-17 00:19:32,563 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 [2023-02-17 00:19:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:19:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:19:32,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:19:32,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 00:19:32,632 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:19:32,634 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:19:32,727 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:19:32,731 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:19:32,732 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 00:19:32,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:19:32 BoogieIcfgContainer [2023-02-17 00:19:32,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:19:32,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:19:32,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:19:32,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:19:32,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:19:32" (1/3) ... [2023-02-17 00:19:32,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deeb45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:19:32, skipping insertion in model container [2023-02-17 00:19:32,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:32" (2/3) ... [2023-02-17 00:19:32,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3deeb45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:19:32, skipping insertion in model container [2023-02-17 00:19:32,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:19:32" (3/3) ... [2023-02-17 00:19:32,745 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-17 00:19:32,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:19:32,759 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:19:32,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:19:32,793 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;@5ecc9720, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:19:32,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:19:32,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2023-02-17 00:19:32,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 00:19:32,802 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:32,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 00:19:32,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-17 00:19:32,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:19:32,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606895675] [2023-02-17 00:19:32,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:32,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:19:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:32,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:32,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:19:32,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606895675] [2023-02-17 00:19:32,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606895675] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:19:32,915 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:19:32,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:19:32,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654489583] [2023-02-17 00:19:32,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:19:32,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:19:32,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:19:32,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:19:32,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:19:32,943 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 00:19:32,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:32,952 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-17 00:19:32,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:19:32,954 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 00:19:32,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:32,958 INFO L225 Difference]: With dead ends: 21 [2023-02-17 00:19:32,959 INFO L226 Difference]: Without dead ends: 9 [2023-02-17 00:19:32,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:19:32,963 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2023-02-17 00:19:32,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:19:32,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-17 00:19:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-17 00:19:32,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-02-17 00:19:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-17 00:19:32,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-17 00:19:32,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:32,984 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-17 00:19:32,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 00:19:32,984 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-17 00:19:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 00:19:32,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:32,985 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 00:19:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 00:19:32,986 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:32,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-17 00:19:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:19:32,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322213674] [2023-02-17 00:19:32,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:32,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:19:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:33,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:33,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:19:33,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322213674] [2023-02-17 00:19:33,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322213674] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:19:33,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:19:33,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:19:33,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893205021] [2023-02-17 00:19:33,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:19:33,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:19:33,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:19:33,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:19:33,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:19:33,099 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 00:19:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:33,111 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-17 00:19:33,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:19:33,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 00:19:33,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:33,112 INFO L225 Difference]: With dead ends: 16 [2023-02-17 00:19:33,112 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 00:19:33,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:19:33,113 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:19:33,113 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:19:33,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 00:19:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-17 00:19:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2023-02-17 00:19:33,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 00:19:33,116 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-17 00:19:33,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:33,117 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 00:19:33,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 00:19:33,117 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 00:19:33,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 00:19:33,117 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:33,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:19:33,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 00:19:33,118 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:33,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:33,119 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-17 00:19:33,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:19:33,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979981774] [2023-02-17 00:19:33,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:33,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:19:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:33,188 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:33,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:19:33,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979981774] [2023-02-17 00:19:33,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979981774] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:19:33,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600517918] [2023-02-17 00:19:33,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:33,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:19:33,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:19:33,192 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) [2023-02-17 00:19:33,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 00:19:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:33,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-17 00:19:33,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:33,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:19:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:33,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600517918] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:19:33,356 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:19:33,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 5] total 8 [2023-02-17 00:19:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245743964] [2023-02-17 00:19:33,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:19:33,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 00:19:33,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:19:33,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 00:19:33,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-17 00:19:33,358 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2023-02-17 00:19:33,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:33,388 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-17 00:19:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 00:19:33,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) Word has length 9 [2023-02-17 00:19:33,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:33,389 INFO L225 Difference]: With dead ends: 23 [2023-02-17 00:19:33,389 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 00:19:33,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2023-02-17 00:19:33,391 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:19:33,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 29 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:19:33,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 00:19:33,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 00:19:33,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2023-02-17 00:19:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 00:19:33,397 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-17 00:19:33,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:33,397 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 00:19:33,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2023-02-17 00:19:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 00:19:33,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:19:33,398 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:33,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 00:19:33,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 00:19:33,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:19:33,603 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:33,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:33,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-17 00:19:33,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:19:33,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552911354] [2023-02-17 00:19:33,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:33,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:19:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:33,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 00:19:33,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552911354] [2023-02-17 00:19:33,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552911354] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 00:19:33,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031667680] [2023-02-17 00:19:33,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:19:33,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 00:19:33,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:19:33,780 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) [2023-02-17 00:19:33,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 00:19:33,869 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 00:19:33,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:19:33,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 15 conjunts are in the unsatisfiable core [2023-02-17 00:19:33,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:33,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:33,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:19:34,043 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:34,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031667680] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:19:34,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 00:19:34,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 17 [2023-02-17 00:19:34,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739689633] [2023-02-17 00:19:34,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 00:19:34,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 00:19:34,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 00:19:34,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 00:19:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=177, Unknown=0, NotChecked=0, Total=272 [2023-02-17 00:19:34,046 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2023-02-17 00:19:34,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:34,243 INFO L93 Difference]: Finished difference Result 41 states and 56 transitions. [2023-02-17 00:19:34,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 00:19:34,243 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) Word has length 18 [2023-02-17 00:19:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:34,244 INFO L225 Difference]: With dead ends: 41 [2023-02-17 00:19:34,244 INFO L226 Difference]: Without dead ends: 37 [2023-02-17 00:19:34,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2023-02-17 00:19:34,245 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:19:34,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 96 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:19:34,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-02-17 00:19:34,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-02-17 00:19:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 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) [2023-02-17 00:19:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2023-02-17 00:19:34,250 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 18 [2023-02-17 00:19:34,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:34,250 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2023-02-17 00:19:34,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.5294117647058822) internal successors, (43), 17 states have internal predecessors, (43), 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) [2023-02-17 00:19:34,250 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2023-02-17 00:19:34,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:19:34,251 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:34,251 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 00:19:34,277 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-02-17 00:19:34,459 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,SelfDestructingSolverStorable3 [2023-02-17 00:19:34,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:34,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-17 00:19:34,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 00:19:34,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413033166] [2023-02-17 00:19:34,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:34,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 00:19:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 00:19:34,498 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-02-17 00:19:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-02-17 00:19:34,547 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-02-17 00:19:34,551 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-02-17 00:19:34,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-02-17 00:19:34,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 00:19:34,560 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2023-02-17 00:19:34,562 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-02-17 00:19:34,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.02 12:19:34 BoogieIcfgContainer [2023-02-17 00:19:34,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-02-17 00:19:34,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-02-17 00:19:34,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-02-17 00:19:34,606 INFO L275 PluginConnector]: Witness Printer initialized [2023-02-17 00:19:34,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:19:32" (3/4) ... [2023-02-17 00:19:34,609 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-02-17 00:19:34,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-02-17 00:19:34,610 INFO L158 Benchmark]: Toolchain (without parser) took 2308.11ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 87.5MB in the beginning and 97.7MB in the end (delta: -10.2MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-02-17 00:19:34,611 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:19:34,612 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.39ms. Allocated memory is still 119.5MB. Free memory was 87.5MB in the beginning and 77.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-02-17 00:19:34,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.91ms. Allocated memory is still 119.5MB. Free memory was 77.6MB in the beginning and 75.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:19:34,614 INFO L158 Benchmark]: Boogie Preprocessor took 29.87ms. Allocated memory is still 119.5MB. Free memory was 75.9MB in the beginning and 75.0MB in the end (delta: 917.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-02-17 00:19:34,615 INFO L158 Benchmark]: RCFGBuilder took 228.98ms. Allocated memory is still 119.5MB. Free memory was 74.6MB in the beginning and 65.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-02-17 00:19:34,615 INFO L158 Benchmark]: TraceAbstraction took 1870.92ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 65.0MB in the beginning and 97.7MB in the end (delta: -32.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:19:34,615 INFO L158 Benchmark]: Witness Printer took 3.75ms. Allocated memory is still 144.7MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-02-17 00:19:34,616 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 119.5MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.39ms. Allocated memory is still 119.5MB. Free memory was 87.5MB in the beginning and 77.6MB in the end (delta: 9.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.91ms. Allocated memory is still 119.5MB. Free memory was 77.6MB in the beginning and 75.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.87ms. Allocated memory is still 119.5MB. Free memory was 75.9MB in the beginning and 75.0MB in the end (delta: 917.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 228.98ms. Allocated memory is still 119.5MB. Free memory was 74.6MB in the beginning and 65.7MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1870.92ms. Allocated memory was 119.5MB in the beginning and 144.7MB in the end (delta: 25.2MB). Free memory was 65.0MB in the beginning and 97.7MB in the end (delta: -32.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.75ms. Allocated memory is still 144.7MB. Free memory is still 97.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 31, overapproximation of bitwiseAnd at line 32. Possible FailurePath: [L24] unsigned char x = __VERIFIER_nondet_uchar(); [L25] unsigned char y; [L26] unsigned char c; [L28] y = 0 [L29] c = 0 VAL [c=0, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=0, i=2, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=0, i=2, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=1, i=2, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=1, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=1, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=2, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=2, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=2, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=3, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=3, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=3, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=4, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=4, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=4, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=5, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=5, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=5, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=6, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=6, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=6, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=7, i=1, x=4, y=0] [L30] COND TRUE c < (unsigned char)8 [L31] unsigned char i = ((unsigned char)1) << c; [L32] unsigned char bit = x & i; VAL [bit=0, c=7, i=1, x=4, y=0] [L33] COND FALSE !(bit != (unsigned char)0) VAL [bit=0, c=7, i=1, x=4, y=0] [L36] c = c + ((unsigned char)1) VAL [bit=0, c=8, i=1, x=4, y=0] [L30] COND FALSE !(c < (unsigned char)8) VAL [bit=0, c=8, i=1, x=4, y=0] [L38] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 76 mSDsluCounter, 153 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 106 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 104 IncrementalHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 47 mSDtfsCounter, 104 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 72 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=4, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 8 NumberOfNonLiveVariables, 109 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/69 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-02-17 00:19:34,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/num_conversion_2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 00:19:36,395 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 00:19:36,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 00:19:36,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 00:19:36,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 00:19:36,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 00:19:36,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 00:19:36,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 00:19:36,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 00:19:36,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 00:19:36,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 00:19:36,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 00:19:36,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 00:19:36,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 00:19:36,491 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 00:19:36,492 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 00:19:36,493 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 00:19:36,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 00:19:36,495 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 00:19:36,499 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 00:19:36,500 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 00:19:36,501 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 00:19:36,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 00:19:36,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 00:19:36,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 00:19:36,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 00:19:36,525 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 00:19:36,527 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 00:19:36,527 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 00:19:36,528 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 00:19:36,529 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 00:19:36,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 00:19:36,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 00:19:36,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 00:19:36,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 00:19:36,537 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 00:19:36,537 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 00:19:36,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 00:19:36,538 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 00:19:36,538 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 00:19:36,539 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 00:19:36,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-02-17 00:19:36,573 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 00:19:36,573 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 00:19:36,574 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 00:19:36,574 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 00:19:36,575 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 00:19:36,575 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 00:19:36,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 00:19:36,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 00:19:36,576 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 00:19:36,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 00:19:36,577 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 00:19:36,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 00:19:36,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 00:19:36,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-02-17 00:19:36,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 00:19:36,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-02-17 00:19:36,578 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 00:19:36,578 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-02-17 00:19:36,578 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-02-17 00:19:36,579 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 00:19:36,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-02-17 00:19:36,579 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 00:19:36,579 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-02-17 00:19:36,579 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 00:19:36,579 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 00:19:36,580 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 00:19:36,580 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:19:36,580 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 00:19:36,580 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 00:19:36,580 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-02-17 00:19:36,580 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-02-17 00:19:36,581 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-02-17 00:19:36,581 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 00:19:36,581 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-02-17 00:19:36,581 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 00:19:36,581 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 00:19:36,581 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-02-17 00:19:36,582 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 00:19:36,582 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e0da033eb6b5a3b4db0394198751cf880534ee28b64f0bd7b196bfba1d785e1 [2023-02-17 00:19:36,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 00:19:36,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 00:19:36,944 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 00:19:36,945 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 00:19:36,946 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 00:19:36,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 00:19:38,012 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 00:19:38,186 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 00:19:38,187 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/num_conversion_2.c [2023-02-17 00:19:38,206 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90082069/062133fbcfcb43ecb71f991b572196c4/FLAGe3e0c6b73 [2023-02-17 00:19:38,218 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f90082069/062133fbcfcb43ecb71f991b572196c4 [2023-02-17 00:19:38,219 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 00:19:38,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 00:19:38,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 00:19:38,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 00:19:38,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 00:19:38,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d0573a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38, skipping insertion in model container [2023-02-17 00:19:38,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 00:19:38,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 00:19:38,324 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/bitvector/num_conversion_2.c[685,698] [2023-02-17 00:19:38,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:19:38,348 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 00:19:38,358 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/bitvector/num_conversion_2.c[685,698] [2023-02-17 00:19:38,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 00:19:38,374 INFO L208 MainTranslator]: Completed translation [2023-02-17 00:19:38,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38 WrapperNode [2023-02-17 00:19:38,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 00:19:38,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 00:19:38,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 00:19:38,376 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 00:19:38,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,397 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2023-02-17 00:19:38,398 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 00:19:38,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 00:19:38,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 00:19:38,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 00:19:38,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,426 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,430 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 00:19:38,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 00:19:38,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 00:19:38,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 00:19:38,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (1/1) ... [2023-02-17 00:19:38,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 00:19:38,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 00:19:38,458 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) [2023-02-17 00:19:38,505 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 [2023-02-17 00:19:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 00:19:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 00:19:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 00:19:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-02-17 00:19:38,576 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 00:19:38,579 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 00:19:38,688 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 00:19:38,692 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 00:19:38,693 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2023-02-17 00:19:38,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:19:38 BoogieIcfgContainer [2023-02-17 00:19:38,694 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 00:19:38,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 00:19:38,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 00:19:38,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 00:19:38,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 12:19:38" (1/3) ... [2023-02-17 00:19:38,698 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647388ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:19:38, skipping insertion in model container [2023-02-17 00:19:38,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 12:19:38" (2/3) ... [2023-02-17 00:19:38,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647388ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 12:19:38, skipping insertion in model container [2023-02-17 00:19:38,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 12:19:38" (3/3) ... [2023-02-17 00:19:38,700 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_2.c [2023-02-17 00:19:38,711 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 00:19:38,711 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-02-17 00:19:38,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 00:19:38,745 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;@232d8017, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 00:19:38,745 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-02-17 00:19:38,748 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) [2023-02-17 00:19:38,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 00:19:38,752 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:38,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 00:19:38,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:38,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2023-02-17 00:19:38,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:19:38,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1694190738] [2023-02-17 00:19:38,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:38,765 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:38,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:19:38,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:19:38,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-02-17 00:19:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:38,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjunts are in the unsatisfiable core [2023-02-17 00:19:38,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:38,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:38,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:19:38,933 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:19:38,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1694190738] [2023-02-17 00:19:38,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1694190738] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:19:38,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:19:38,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 00:19:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352821394] [2023-02-17 00:19:38,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:19:38,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-17 00:19:38,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:19:38,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-17 00:19:38,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:19:38,972 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 00:19:38,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:38,994 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-02-17 00:19:39,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-17 00:19:39,003 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 00:19:39,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:39,007 INFO L225 Difference]: With dead ends: 21 [2023-02-17 00:19:39,007 INFO L226 Difference]: Without dead ends: 9 [2023-02-17 00:19:39,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-17 00:19:39,011 INFO L413 NwaCegarLoop]: 14 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, 14 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 [2023-02-17 00:19:39,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:19:39,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-02-17 00:19:39,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2023-02-17 00:19:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 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) [2023-02-17 00:19:39,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2023-02-17 00:19:39,033 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2023-02-17 00:19:39,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:39,034 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2023-02-17 00:19:39,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2023-02-17 00:19:39,034 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2023-02-17 00:19:39,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 00:19:39,034 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:39,035 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 00:19:39,041 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-02-17 00:19:39,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:39,241 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:39,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:39,242 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2023-02-17 00:19:39,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:19:39,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199358701] [2023-02-17 00:19:39,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:39,243 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:39,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:19:39,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:19:39,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-02-17 00:19:39,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:39,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-02-17 00:19:39,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:39,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:39,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 00:19:39,305 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:19:39,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199358701] [2023-02-17 00:19:39,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199358701] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 00:19:39,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 00:19:39,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-17 00:19:39,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112394086] [2023-02-17 00:19:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 00:19:39,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 00:19:39,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:19:39,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 00:19:39,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:19:39,311 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 00:19:39,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:39,321 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2023-02-17 00:19:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 00:19:39,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) Word has length 6 [2023-02-17 00:19:39,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:39,322 INFO L225 Difference]: With dead ends: 16 [2023-02-17 00:19:39,322 INFO L226 Difference]: Without dead ends: 12 [2023-02-17 00:19:39,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 00:19:39,323 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:19:39,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:19:39,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-02-17 00:19:39,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2023-02-17 00:19:39,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2023-02-17 00:19:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2023-02-17 00:19:39,326 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2023-02-17 00:19:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:39,326 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2023-02-17 00:19:39,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-02-17 00:19:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2023-02-17 00:19:39,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-02-17 00:19:39,327 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:39,327 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:19:39,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-02-17 00:19:39,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:39,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:39,534 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2023-02-17 00:19:39,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:19:39,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1741401241] [2023-02-17 00:19:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:39,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:39,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:19:39,536 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:19:39,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-02-17 00:19:39,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:39,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-02-17 00:19:39,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:39,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:39,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:19:39,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:39,587 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:19:39,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1741401241] [2023-02-17 00:19:39,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1741401241] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:19:39,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:19:39,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-02-17 00:19:39,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454687425] [2023-02-17 00:19:39,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:19:39,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-17 00:19:39,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:19:39,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-17 00:19:39,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-02-17 00:19:39,590 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-02-17 00:19:39,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:39,613 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2023-02-17 00:19:39,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-17 00:19:39,613 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 9 [2023-02-17 00:19:39,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:39,614 INFO L225 Difference]: With dead ends: 23 [2023-02-17 00:19:39,614 INFO L226 Difference]: Without dead ends: 19 [2023-02-17 00:19:39,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-02-17 00:19:39,615 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-17 00:19:39,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 24 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-17 00:19:39,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-02-17 00:19:39,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-02-17 00:19:39,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 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) [2023-02-17 00:19:39,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2023-02-17 00:19:39,619 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 9 [2023-02-17 00:19:39,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:39,619 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2023-02-17 00:19:39,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) [2023-02-17 00:19:39,620 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2023-02-17 00:19:39,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-17 00:19:39,620 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:39,620 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 00:19:39,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-02-17 00:19:39,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:39,827 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:39,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:39,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1171899538, now seen corresponding path program 2 times [2023-02-17 00:19:39,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:19:39,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [500803369] [2023-02-17 00:19:39,829 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:19:39,829 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:39,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:19:39,833 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:19:39,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-02-17 00:19:39,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 00:19:39,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:19:39,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-17 00:19:39,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:39,891 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:19:39,966 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:39,966 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:19:39,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [500803369] [2023-02-17 00:19:39,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [500803369] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:19:39,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:19:39,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-02-17 00:19:39,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234251385] [2023-02-17 00:19:39,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:19:39,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-17 00:19:39,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:19:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-17 00:19:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-02-17 00:19:39,971 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2023-02-17 00:19:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:40,066 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2023-02-17 00:19:40,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-02-17 00:19:40,067 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) Word has length 18 [2023-02-17 00:19:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:40,068 INFO L225 Difference]: With dead ends: 35 [2023-02-17 00:19:40,068 INFO L226 Difference]: Without dead ends: 31 [2023-02-17 00:19:40,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2023-02-17 00:19:40,072 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 32 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:19:40,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 82 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 00:19:40,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2023-02-17 00:19:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2023-02-17 00:19:40,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 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) [2023-02-17 00:19:40,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2023-02-17 00:19:40,077 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 18 [2023-02-17 00:19:40,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:40,077 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2023-02-17 00:19:40,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.6666666666666665) internal successors, (32), 12 states have internal predecessors, (32), 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) [2023-02-17 00:19:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2023-02-17 00:19:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:19:40,078 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:40,078 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1] [2023-02-17 00:19:40,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-02-17 00:19:40,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:40,285 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:40,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:40,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1720528430, now seen corresponding path program 3 times [2023-02-17 00:19:40,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:19:40,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [154020686] [2023-02-17 00:19:40,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 00:19:40,286 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:40,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:19:40,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:19:40,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-02-17 00:19:40,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 00:19:40,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:19:40,339 WARN L261 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 00:19:40,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:41,469 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:19:43,213 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:43,213 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:19:43,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [154020686] [2023-02-17 00:19:43,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [154020686] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:19:43,213 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:19:43,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 53 [2023-02-17 00:19:43,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263346877] [2023-02-17 00:19:43,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:19:43,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2023-02-17 00:19:43,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:19:43,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2023-02-17 00:19:43,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=2170, Unknown=0, NotChecked=0, Total=2756 [2023-02-17 00:19:43,217 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 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) [2023-02-17 00:19:48,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:19:48,334 INFO L93 Difference]: Finished difference Result 162 states and 204 transitions. [2023-02-17 00:19:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-17 00:19:48,336 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 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) Word has length 30 [2023-02-17 00:19:48,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:19:48,343 INFO L225 Difference]: With dead ends: 162 [2023-02-17 00:19:48,343 INFO L226 Difference]: Without dead ends: 156 [2023-02-17 00:19:48,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3620 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2530, Invalid=9026, Unknown=0, NotChecked=0, Total=11556 [2023-02-17 00:19:48,349 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 167 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 666 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:19:48,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 70 Invalid, 666 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-17 00:19:48,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-02-17 00:19:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2023-02-17 00:19:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.3404255319148937) internal successors, (126), 94 states have internal predecessors, (126), 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) [2023-02-17 00:19:48,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 126 transitions. [2023-02-17 00:19:48,380 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 126 transitions. Word has length 30 [2023-02-17 00:19:48,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:19:48,380 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 126 transitions. [2023-02-17 00:19:48,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.0754716981132075) internal successors, (57), 53 states have internal predecessors, (57), 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) [2023-02-17 00:19:48,381 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 126 transitions. [2023-02-17 00:19:48,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:19:48,382 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:19:48,382 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:19:48,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-02-17 00:19:48,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:48,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:19:48,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:19:48,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1777786732, now seen corresponding path program 1 times [2023-02-17 00:19:48,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:19:48,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899974321] [2023-02-17 00:19:48,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 00:19:48,588 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:19:48,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:19:48,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:19:48,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-02-17 00:19:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:19:48,626 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 00:19:48,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:19:49,111 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:49,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:19:50,894 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:19:50,895 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:19:50,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899974321] [2023-02-17 00:19:50,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899974321] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:19:50,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:19:50,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:19:50,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199740235] [2023-02-17 00:19:50,899 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:19:50,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:19:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:19:50,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:19:50,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2240, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:19:50,903 INFO L87 Difference]: Start difference. First operand 95 states and 126 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:20:06,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:20:06,652 INFO L93 Difference]: Finished difference Result 419 states and 575 transitions. [2023-02-17 00:20:06,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-02-17 00:20:06,653 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:20:06,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:20:06,654 INFO L225 Difference]: With dead ends: 419 [2023-02-17 00:20:06,655 INFO L226 Difference]: Without dead ends: 365 [2023-02-17 00:20:06,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12574 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=5964, Invalid=33042, Unknown=0, NotChecked=0, Total=39006 [2023-02-17 00:20:06,665 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 320 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 1495 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-02-17 00:20:06,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 118 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1495 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-02-17 00:20:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2023-02-17 00:20:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 201. [2023-02-17 00:20:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.375) internal successors, (275), 200 states have internal predecessors, (275), 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) [2023-02-17 00:20:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 275 transitions. [2023-02-17 00:20:06,710 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 275 transitions. Word has length 30 [2023-02-17 00:20:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:20:06,711 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 275 transitions. [2023-02-17 00:20:06,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:20:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 275 transitions. [2023-02-17 00:20:06,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:20:06,712 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:20:06,712 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:20:06,719 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-02-17 00:20:06,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:20:06,919 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:20:06,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:20:06,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1894380496, now seen corresponding path program 2 times [2023-02-17 00:20:06,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:20:06,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878783141] [2023-02-17 00:20:06,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:20:06,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:20:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:20:06,921 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:20:06,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-02-17 00:20:06,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 00:20:06,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:20:06,948 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 37 conjunts are in the unsatisfiable core [2023-02-17 00:20:06,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:20:07,467 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:20:07,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:20:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:20:09,342 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:20:09,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878783141] [2023-02-17 00:20:09,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878783141] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:20:09,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:20:09,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:20:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790667536] [2023-02-17 00:20:09,343 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:20:09,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:20:09,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:20:09,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:20:09,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=369, Invalid=2283, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:20:09,347 INFO L87 Difference]: Start difference. First operand 201 states and 275 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:20:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:20:24,610 INFO L93 Difference]: Finished difference Result 393 states and 512 transitions. [2023-02-17 00:20:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 161 states. [2023-02-17 00:20:24,610 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:20:24,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:20:24,611 INFO L225 Difference]: With dead ends: 393 [2023-02-17 00:20:24,614 INFO L226 Difference]: Without dead ends: 336 [2023-02-17 00:20:24,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12753 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=5431, Invalid=32789, Unknown=0, NotChecked=0, Total=38220 [2023-02-17 00:20:24,618 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 210 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 1574 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 1574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 00:20:24,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 121 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 1574 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-17 00:20:24,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2023-02-17 00:20:24,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 222. [2023-02-17 00:20:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 1.3619909502262444) internal successors, (301), 221 states have internal predecessors, (301), 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) [2023-02-17 00:20:24,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 301 transitions. [2023-02-17 00:20:24,673 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 301 transitions. Word has length 30 [2023-02-17 00:20:24,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:20:24,674 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 301 transitions. [2023-02-17 00:20:24,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:20:24,674 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 301 transitions. [2023-02-17 00:20:24,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:20:24,675 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:20:24,675 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 00:20:24,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-02-17 00:20:24,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:20:24,882 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:20:24,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:20:24,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1978693868, now seen corresponding path program 3 times [2023-02-17 00:20:24,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:20:24,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [624114499] [2023-02-17 00:20:24,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 00:20:24,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:20:24,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:20:24,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:20:24,886 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-02-17 00:20:24,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 00:20:24,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:20:24,912 WARN L261 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 39 conjunts are in the unsatisfiable core [2023-02-17 00:20:24,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:20:25,767 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:20:25,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:20:28,374 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:20:28,374 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:20:28,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [624114499] [2023-02-17 00:20:28,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [624114499] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:20:28,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:20:28,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 00:20:28,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939715097] [2023-02-17 00:20:28,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:20:28,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 00:20:28,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:20:28,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 00:20:28,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=2398, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 00:20:28,377 INFO L87 Difference]: Start difference. First operand 222 states and 301 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) [2023-02-17 00:20:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:20:41,574 INFO L93 Difference]: Finished difference Result 592 states and 762 transitions. [2023-02-17 00:20:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-02-17 00:20:41,575 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:20:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:20:41,577 INFO L225 Difference]: With dead ends: 592 [2023-02-17 00:20:41,577 INFO L226 Difference]: Without dead ends: 584 [2023-02-17 00:20:41,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5569 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=3261, Invalid=15371, Unknown=0, NotChecked=0, Total=18632 [2023-02-17 00:20:41,579 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 226 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 182 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-02-17 00:20:41,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 111 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [182 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-02-17 00:20:41,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-02-17 00:20:41,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 343. [2023-02-17 00:20:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3421052631578947) internal successors, (459), 342 states have internal predecessors, (459), 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) [2023-02-17 00:20:41,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 459 transitions. [2023-02-17 00:20:41,668 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 459 transitions. Word has length 30 [2023-02-17 00:20:41,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:20:41,668 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 459 transitions. [2023-02-17 00:20:41,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) [2023-02-17 00:20:41,669 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 459 transitions. [2023-02-17 00:20:41,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:20:41,670 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:20:41,670 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 00:20:41,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-02-17 00:20:41,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:20:41,877 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:20:41,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:20:41,877 INFO L85 PathProgramCache]: Analyzing trace with hash -2035952170, now seen corresponding path program 4 times [2023-02-17 00:20:41,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:20:41,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984121872] [2023-02-17 00:20:41,878 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 00:20:41,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:20:41,878 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:20:41,880 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:20:41,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-02-17 00:20:41,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 00:20:41,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:20:41,920 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 00:20:41,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:20:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:20:42,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:20:44,192 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:20:44,192 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:20:44,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984121872] [2023-02-17 00:20:44,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984121872] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:20:44,193 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:20:44,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:20:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779226977] [2023-02-17 00:20:44,196 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:20:44,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:20:44,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:20:44,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:20:44,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=396, Invalid=2256, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:20:44,200 INFO L87 Difference]: Start difference. First operand 343 states and 459 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:21:03,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:21:03,369 INFO L93 Difference]: Finished difference Result 681 states and 899 transitions. [2023-02-17 00:21:03,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2023-02-17 00:21:03,370 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:21:03,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:21:03,371 INFO L225 Difference]: With dead ends: 681 [2023-02-17 00:21:03,372 INFO L226 Difference]: Without dead ends: 637 [2023-02-17 00:21:03,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15488 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=6319, Invalid=40121, Unknown=0, NotChecked=0, Total=46440 [2023-02-17 00:21:03,376 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 202 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 2084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-02-17 00:21:03,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 170 Invalid, 2084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-02-17 00:21:03,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-02-17 00:21:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 454. [2023-02-17 00:21:03,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 1.3642384105960266) internal successors, (618), 453 states have internal predecessors, (618), 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) [2023-02-17 00:21:03,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 618 transitions. [2023-02-17 00:21:03,490 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 618 transitions. Word has length 30 [2023-02-17 00:21:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:21:03,490 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 618 transitions. [2023-02-17 00:21:03,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:21:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 618 transitions. [2023-02-17 00:21:03,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:21:03,491 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:21:03,492 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 00:21:03,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Ended with exit code 0 [2023-02-17 00:21:03,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:21:03,698 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:21:03,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:21:03,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1636215058, now seen corresponding path program 5 times [2023-02-17 00:21:03,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:21:03,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462401786] [2023-02-17 00:21:03,699 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 00:21:03,699 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:21:03,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:21:03,700 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:21:03,705 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-02-17 00:21:03,727 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-17 00:21:03,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:21:03,728 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 00:21:03,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:21:04,217 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:21:04,217 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:21:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:21:06,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:21:06,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462401786] [2023-02-17 00:21:06,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462401786] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:21:06,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:21:06,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:21:06,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791127682] [2023-02-17 00:21:06,246 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:21:06,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:21:06,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:21:06,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:21:06,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=393, Invalid=2259, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:21:06,248 INFO L87 Difference]: Start difference. First operand 454 states and 618 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:21:19,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:21:19,416 INFO L93 Difference]: Finished difference Result 645 states and 869 transitions. [2023-02-17 00:21:19,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2023-02-17 00:21:19,417 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:21:19,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:21:19,430 INFO L225 Difference]: With dead ends: 645 [2023-02-17 00:21:19,430 INFO L226 Difference]: Without dead ends: 596 [2023-02-17 00:21:19,431 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7845 ImplicationChecksByTransitivity, 13.2s TimeCoverageRelationStatistics Valid=3942, Invalid=22790, Unknown=0, NotChecked=0, Total=26732 [2023-02-17 00:21:19,432 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 157 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 1681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:21:19,432 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 65 Invalid, 1681 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-17 00:21:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2023-02-17 00:21:19,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 480. [2023-02-17 00:21:19,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 479 states have (on average 1.3590814196242171) internal successors, (651), 479 states have internal predecessors, (651), 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) [2023-02-17 00:21:19,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 651 transitions. [2023-02-17 00:21:19,556 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 651 transitions. Word has length 30 [2023-02-17 00:21:19,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:21:19,557 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 651 transitions. [2023-02-17 00:21:19,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:21:19,557 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 651 transitions. [2023-02-17 00:21:19,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:21:19,558 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:21:19,558 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 00:21:19,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-02-17 00:21:19,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:21:19,765 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:21:19,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:21:19,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1578956756, now seen corresponding path program 6 times [2023-02-17 00:21:19,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:21:19,766 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126422367] [2023-02-17 00:21:19,766 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-02-17 00:21:19,766 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:21:19,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:21:19,767 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:21:19,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-02-17 00:21:19,814 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s) [2023-02-17 00:21:19,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:21:19,815 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 44 conjunts are in the unsatisfiable core [2023-02-17 00:21:19,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:21:20,432 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:21:20,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:21:22,954 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:21:22,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:21:22,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [126422367] [2023-02-17 00:21:22,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [126422367] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:21:22,955 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:21:22,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 00:21:22,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722562979] [2023-02-17 00:21:22,956 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:21:22,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 00:21:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:21:22,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 00:21:22,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=413, Invalid=2449, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 00:21:22,958 INFO L87 Difference]: Start difference. First operand 480 states and 651 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) [2023-02-17 00:22:12,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:22:12,181 INFO L93 Difference]: Finished difference Result 1004 states and 1335 transitions. [2023-02-17 00:22:12,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2023-02-17 00:22:12,182 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:22:12,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:22:12,184 INFO L225 Difference]: With dead ends: 1004 [2023-02-17 00:22:12,184 INFO L226 Difference]: Without dead ends: 990 [2023-02-17 00:22:12,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17936 ImplicationChecksByTransitivity, 44.3s TimeCoverageRelationStatistics Valid=7493, Invalid=46563, Unknown=0, NotChecked=0, Total=54056 [2023-02-17 00:22:12,187 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 328 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 2041 mSolverCounterSat, 288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 328 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 2329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 288 IncrementalHoareTripleChecker+Valid, 2041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-02-17 00:22:12,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [328 Valid, 315 Invalid, 2329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [288 Valid, 2041 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-02-17 00:22:12,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-02-17 00:22:12,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 802. [2023-02-17 00:22:12,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 1.373283395755306) internal successors, (1100), 801 states have internal predecessors, (1100), 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) [2023-02-17 00:22:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1100 transitions. [2023-02-17 00:22:12,456 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1100 transitions. Word has length 30 [2023-02-17 00:22:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:22:12,456 INFO L495 AbstractCegarLoop]: Abstraction has 802 states and 1100 transitions. [2023-02-17 00:22:12,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) [2023-02-17 00:22:12,456 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1100 transitions. [2023-02-17 00:22:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:22:12,457 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:22:12,457 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 00:22:12,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-02-17 00:22:12,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:22:12,664 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:22:12,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:22:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash -497923054, now seen corresponding path program 7 times [2023-02-17 00:22:12,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:22:12,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064902365] [2023-02-17 00:22:12,665 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-02-17 00:22:12,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:22:12,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:22:12,666 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:22:12,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-02-17 00:22:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 00:22:12,690 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 00:22:12,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:22:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:13,122 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:22:14,982 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:14,983 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:22:14,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064902365] [2023-02-17 00:22:14,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2064902365] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:22:14,983 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:22:14,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:22:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725748921] [2023-02-17 00:22:14,984 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:22:14,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:22:14,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:22:14,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:22:14,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=2257, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:22:14,985 INFO L87 Difference]: Start difference. First operand 802 states and 1100 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:22:34,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:22:34,821 INFO L93 Difference]: Finished difference Result 1186 states and 1602 transitions. [2023-02-17 00:22:34,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 180 states. [2023-02-17 00:22:34,822 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:22:34,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:22:34,825 INFO L225 Difference]: With dead ends: 1186 [2023-02-17 00:22:34,825 INFO L226 Difference]: Without dead ends: 1138 [2023-02-17 00:22:34,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 217 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15913 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=6191, Invalid=41551, Unknown=0, NotChecked=0, Total=47742 [2023-02-17 00:22:34,827 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 214 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 1944 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 2150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-02-17 00:22:34,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 145 Invalid, 2150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1944 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-02-17 00:22:34,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1138 states. [2023-02-17 00:22:35,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1138 to 930. [2023-02-17 00:22:35,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 930 states, 929 states have (on average 1.3702906350914963) internal successors, (1273), 929 states have internal predecessors, (1273), 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) [2023-02-17 00:22:35,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 930 states to 930 states and 1273 transitions. [2023-02-17 00:22:35,134 INFO L78 Accepts]: Start accepts. Automaton has 930 states and 1273 transitions. Word has length 30 [2023-02-17 00:22:35,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:22:35,134 INFO L495 AbstractCegarLoop]: Abstraction has 930 states and 1273 transitions. [2023-02-17 00:22:35,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:22:35,135 INFO L276 IsEmpty]: Start isEmpty. Operand 930 states and 1273 transitions. [2023-02-17 00:22:35,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:22:35,135 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:22:35,135 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 00:22:35,142 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-02-17 00:22:35,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:22:35,341 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:22:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:22:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1120723122, now seen corresponding path program 8 times [2023-02-17 00:22:35,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:22:35,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2056479870] [2023-02-17 00:22:35,342 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-17 00:22:35,342 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:22:35,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:22:35,343 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:22:35,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-02-17 00:22:35,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-17 00:22:35,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:22:35,381 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 38 conjunts are in the unsatisfiable core [2023-02-17 00:22:35,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:22:35,829 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:35,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:22:37,753 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:37,754 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:22:37,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2056479870] [2023-02-17 00:22:37,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2056479870] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:22:37,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:22:37,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:22:37,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681287861] [2023-02-17 00:22:37,754 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:22:37,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:22:37,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:22:37,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:22:37,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=367, Invalid=2285, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:22:37,766 INFO L87 Difference]: Start difference. First operand 930 states and 1273 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:22:51,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:22:51,717 INFO L93 Difference]: Finished difference Result 1195 states and 1622 transitions. [2023-02-17 00:22:51,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-17 00:22:51,718 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:22:51,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:22:51,727 INFO L225 Difference]: With dead ends: 1195 [2023-02-17 00:22:51,727 INFO L226 Difference]: Without dead ends: 1131 [2023-02-17 00:22:51,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9482 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=4178, Invalid=26622, Unknown=0, NotChecked=0, Total=30800 [2023-02-17 00:22:51,728 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 185 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-17 00:22:51,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 151 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-17 00:22:51,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1131 states. [2023-02-17 00:22:52,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1131 to 978. [2023-02-17 00:22:52,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 977 states have (on average 1.3674513817809621) internal successors, (1336), 977 states have internal predecessors, (1336), 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) [2023-02-17 00:22:52,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1336 transitions. [2023-02-17 00:22:52,082 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1336 transitions. Word has length 30 [2023-02-17 00:22:52,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:22:52,082 INFO L495 AbstractCegarLoop]: Abstraction has 978 states and 1336 transitions. [2023-02-17 00:22:52,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:22:52,083 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1336 transitions. [2023-02-17 00:22:52,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:22:52,083 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:22:52,083 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2023-02-17 00:22:52,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-02-17 00:22:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:22:52,308 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:22:52,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:22:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1378888560, now seen corresponding path program 9 times [2023-02-17 00:22:52,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:22:52,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132044112] [2023-02-17 00:22:52,309 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-17 00:22:52,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:22:52,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:22:52,315 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:22:52,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-02-17 00:22:52,364 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2023-02-17 00:22:52,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:22:52,365 WARN L261 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 41 conjunts are in the unsatisfiable core [2023-02-17 00:22:52,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:22:53,334 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 3 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:53,335 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:22:56,645 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 9 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:22:56,645 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:22:56,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132044112] [2023-02-17 00:22:56,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [132044112] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:22:56,646 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:22:56,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 54 [2023-02-17 00:22:56,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658747018] [2023-02-17 00:22:56,646 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:22:56,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-02-17 00:22:56,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:22:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-02-17 00:22:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2401, Unknown=0, NotChecked=0, Total=2862 [2023-02-17 00:22:56,647 INFO L87 Difference]: Start difference. First operand 978 states and 1336 transitions. Second operand has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) [2023-02-17 00:23:22,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:22,712 INFO L93 Difference]: Finished difference Result 1617 states and 2170 transitions. [2023-02-17 00:23:22,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2023-02-17 00:23:22,713 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:23:22,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:22,716 INFO L225 Difference]: With dead ends: 1617 [2023-02-17 00:23:22,716 INFO L226 Difference]: Without dead ends: 1609 [2023-02-17 00:23:22,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10785 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=5368, Invalid=27574, Unknown=0, NotChecked=0, Total=32942 [2023-02-17 00:23:22,718 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 323 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 229 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 1550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 229 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:22,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 149 Invalid, 1550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [229 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-02-17 00:23:22,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2023-02-17 00:23:23,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1317. [2023-02-17 00:23:23,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1317 states, 1316 states have (on average 1.3761398176291793) internal successors, (1811), 1316 states have internal predecessors, (1811), 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) [2023-02-17 00:23:23,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1811 transitions. [2023-02-17 00:23:23,211 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1811 transitions. Word has length 30 [2023-02-17 00:23:23,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:23,212 INFO L495 AbstractCegarLoop]: Abstraction has 1317 states and 1811 transitions. [2023-02-17 00:23:23,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.0740740740740742) internal successors, (58), 54 states have internal predecessors, (58), 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) [2023-02-17 00:23:23,212 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1811 transitions. [2023-02-17 00:23:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:23:23,213 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:23,213 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:23,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-02-17 00:23:23,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:23:23,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:23,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:23,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1436146862, now seen corresponding path program 10 times [2023-02-17 00:23:23,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:23:23,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979350578] [2023-02-17 00:23:23,423 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-17 00:23:23,423 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:23:23,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:23:23,424 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:23:23,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-02-17 00:23:23,455 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-17 00:23:23,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:23:23,458 WARN L261 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 40 conjunts are in the unsatisfiable core [2023-02-17 00:23:23,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:23:23,883 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:23,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:23:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:26,908 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:23:26,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979350578] [2023-02-17 00:23:26,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979350578] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:23:26,908 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:23:26,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:23:26,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385650722] [2023-02-17 00:23:26,908 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:23:26,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:23:26,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:23:26,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:23:26,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=2263, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:23:26,910 INFO L87 Difference]: Start difference. First operand 1317 states and 1811 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:23:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 00:23:58,447 INFO L93 Difference]: Finished difference Result 1636 states and 2237 transitions. [2023-02-17 00:23:58,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 146 states. [2023-02-17 00:23:58,447 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) Word has length 30 [2023-02-17 00:23:58,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 00:23:58,451 INFO L225 Difference]: With dead ends: 1636 [2023-02-17 00:23:58,451 INFO L226 Difference]: Without dead ends: 1590 [2023-02-17 00:23:58,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9604 ImplicationChecksByTransitivity, 29.3s TimeCoverageRelationStatistics Valid=4669, Invalid=27193, Unknown=0, NotChecked=0, Total=31862 [2023-02-17 00:23:58,452 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 176 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-02-17 00:23:58,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 164 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2031 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2023-02-17 00:23:58,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2023-02-17 00:23:58,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1424. [2023-02-17 00:23:58,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 1423 states have (on average 1.3836964160224876) internal successors, (1969), 1423 states have internal predecessors, (1969), 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) [2023-02-17 00:23:59,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1969 transitions. [2023-02-17 00:23:59,002 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1969 transitions. Word has length 30 [2023-02-17 00:23:59,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 00:23:59,002 INFO L495 AbstractCegarLoop]: Abstraction has 1424 states and 1969 transitions. [2023-02-17 00:23:59,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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) [2023-02-17 00:23:59,003 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1969 transitions. [2023-02-17 00:23:59,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-02-17 00:23:59,003 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 00:23:59,003 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1] [2023-02-17 00:23:59,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2023-02-17 00:23:59,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:23:59,210 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-02-17 00:23:59,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 00:23:59,211 INFO L85 PathProgramCache]: Analyzing trace with hash 216357974, now seen corresponding path program 11 times [2023-02-17 00:23:59,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-02-17 00:23:59,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1203895633] [2023-02-17 00:23:59,211 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-17 00:23:59,211 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-02-17 00:23:59,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2023-02-17 00:23:59,212 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-02-17 00:23:59,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-02-17 00:23:59,236 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-02-17 00:23:59,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-17 00:23:59,237 WARN L261 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-17 00:23:59,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 00:23:59,738 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:23:59,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 00:24:01,661 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 00:24:01,661 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-02-17 00:24:01,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1203895633] [2023-02-17 00:24:01,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1203895633] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 00:24:01,661 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 00:24:01,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-02-17 00:24:01,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751139789] [2023-02-17 00:24:01,662 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 00:24:01,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-02-17 00:24:01,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-02-17 00:24:01,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-02-17 00:24:01,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=394, Invalid=2258, Unknown=0, NotChecked=0, Total=2652 [2023-02-17 00:24:01,663 INFO L87 Difference]: Start difference. First operand 1424 states and 1969 transitions. Second operand has 52 states, 52 states have (on average 1.1153846153846154) internal successors, (58), 52 states have internal predecessors, (58), 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)