./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.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 9cf0abd1bd1b4ed3cb492af2ceaa5e063719310ace8aba62ab225fe204180938 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 04:27:20,269 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 04:27:20,271 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 04:27:20,318 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 04:27:20,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 04:27:20,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 04:27:20,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 04:27:20,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 04:27:20,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 04:27:20,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 04:27:20,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 04:27:20,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 04:27:20,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 04:27:20,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 04:27:20,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 04:27:20,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 04:27:20,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 04:27:20,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 04:27:20,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 04:27:20,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 04:27:20,343 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 04:27:20,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 04:27:20,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 04:27:20,345 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 04:27:20,346 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 04:27:20,350 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 04:27:20,350 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 04:27:20,351 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 04:27:20,351 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 04:27:20,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 04:27:20,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 04:27:20,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 04:27:20,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 04:27:20,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 04:27:20,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 04:27:20,354 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 04:27:20,355 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 04:27:20,355 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 04:27:20,355 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 04:27:20,355 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 04:27:20,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 04:27:20,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 04:27:20,360 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 04:27:20,381 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 04:27:20,382 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 04:27:20,382 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 04:27:20,382 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 04:27:20,383 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 04:27:20,383 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 04:27:20,383 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 04:27:20,383 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 04:27:20,384 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 04:27:20,384 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 04:27:20,384 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 04:27:20,385 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 04:27:20,385 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 04:27:20,385 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 04:27:20,385 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 04:27:20,385 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 04:27:20,385 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 04:27:20,385 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 04:27:20,386 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 04:27:20,386 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 04:27:20,386 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 04:27:20,386 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 04:27:20,386 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 04:27:20,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 04:27:20,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:27:20,387 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 04:27:20,387 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 04:27:20,387 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 04:27:20,387 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 04:27:20,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 04:27:20,388 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 04:27:20,388 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 04:27:20,388 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 04:27:20,388 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9cf0abd1bd1b4ed3cb492af2ceaa5e063719310ace8aba62ab225fe204180938 [2022-07-12 04:27:20,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 04:27:20,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 04:27:20,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 04:27:20,617 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 04:27:20,617 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 04:27:20,618 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2022-07-12 04:27:20,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b170e37/b8ad1cd210d147f19257757bc1bb8361/FLAGd9fa6b851 [2022-07-12 04:27:21,017 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 04:27:21,018 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c [2022-07-12 04:27:21,022 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b170e37/b8ad1cd210d147f19257757bc1bb8361/FLAGd9fa6b851 [2022-07-12 04:27:21,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64b170e37/b8ad1cd210d147f19257757bc1bb8361 [2022-07-12 04:27:21,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 04:27:21,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 04:27:21,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 04:27:21,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 04:27:21,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 04:27:21,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,037 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77adbbd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21, skipping insertion in model container [2022-07-12 04:27:21,037 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 04:27:21,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 04:27:21,190 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c[576,589] [2022-07-12 04:27:21,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:27:21,212 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 04:27:21,222 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_unwindbound50.c[576,589] [2022-07-12 04:27:21,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 04:27:21,248 INFO L208 MainTranslator]: Completed translation [2022-07-12 04:27:21,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21 WrapperNode [2022-07-12 04:27:21,249 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 04:27:21,250 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 04:27:21,250 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 04:27:21,250 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 04:27:21,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,276 INFO L137 Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2022-07-12 04:27:21,277 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 04:27:21,277 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 04:27:21,278 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 04:27:21,278 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 04:27:21,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,304 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,306 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 04:27:21,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 04:27:21,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 04:27:21,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 04:27:21,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (1/1) ... [2022-07-12 04:27:21,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 04:27:21,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:21,351 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) [2022-07-12 04:27:21,353 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 [2022-07-12 04:27:21,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 04:27:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 04:27:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 04:27:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 04:27:21,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 04:27:21,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 04:27:21,425 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 04:27:21,426 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 04:27:21,562 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 04:27:21,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 04:27:21,567 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-12 04:27:21,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:27:21 BoogieIcfgContainer [2022-07-12 04:27:21,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 04:27:21,584 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 04:27:21,584 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 04:27:21,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 04:27:21,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 04:27:21" (1/3) ... [2022-07-12 04:27:21,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9c00ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:27:21, skipping insertion in model container [2022-07-12 04:27:21,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 04:27:21" (2/3) ... [2022-07-12 04:27:21,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e9c00ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 04:27:21, skipping insertion in model container [2022-07-12 04:27:21,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:27:21" (3/3) ... [2022-07-12 04:27:21,589 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_unwindbound50.c [2022-07-12 04:27:21,598 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 04:27:21,598 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 04:27:21,627 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 04:27:21,632 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@37909a47, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7bfa0115 [2022-07-12 04:27:21,632 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 04:27:21,635 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 04:27:21,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-12 04:27:21,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:21,640 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:21,641 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:21,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash -555122024, now seen corresponding path program 1 times [2022-07-12 04:27:21,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:21,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1905584549] [2022-07-12 04:27:21,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:21,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:21,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:27:21,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:21,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1905584549] [2022-07-12 04:27:21,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1905584549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:27:21,766 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:27:21,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 04:27:21,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222671839] [2022-07-12 04:27:21,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:27:21,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 04:27:21,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:21,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 04:27:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 04:27:21,797 INFO L87 Difference]: Start difference. First operand has 29 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 20 states have internal predecessors, (28), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:27:21,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:21,817 INFO L93 Difference]: Finished difference Result 55 states and 87 transitions. [2022-07-12 04:27:21,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 04:27:21,819 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-07-12 04:27:21,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:21,825 INFO L225 Difference]: With dead ends: 55 [2022-07-12 04:27:21,825 INFO L226 Difference]: Without dead ends: 25 [2022-07-12 04:27:21,828 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 [2022-07-12 04:27:21,831 INFO L413 NwaCegarLoop]: 38 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, 38 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 [2022-07-12 04:27:21,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:27:21,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-07-12 04:27:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-07-12 04:27:21,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 04:27:21,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 34 transitions. [2022-07-12 04:27:21,873 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 34 transitions. Word has length 9 [2022-07-12 04:27:21,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:21,874 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 34 transitions. [2022-07-12 04:27:21,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:27:21,875 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 34 transitions. [2022-07-12 04:27:21,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 04:27:21,877 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:21,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:21,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 04:27:21,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1985514477, now seen corresponding path program 1 times [2022-07-12 04:27:21,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:21,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733280900] [2022-07-12 04:27:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:27:21,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:21,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733280900] [2022-07-12 04:27:21,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733280900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:27:21,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:27:21,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 04:27:21,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742786742] [2022-07-12 04:27:21,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:27:21,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 04:27:21,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 04:27:21,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:27:21,967 INFO L87 Difference]: Start difference. First operand 25 states and 34 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:27:21,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:21,992 INFO L93 Difference]: Finished difference Result 34 states and 43 transitions. [2022-07-12 04:27:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 04:27:21,992 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-12 04:27:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:21,994 INFO L225 Difference]: With dead ends: 34 [2022-07-12 04:27:21,994 INFO L226 Difference]: Without dead ends: 27 [2022-07-12 04:27:21,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 04:27:21,998 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:21,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 89 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:27:22,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-12 04:27:22,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-12 04:27:22,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 7 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-12 04:27:22,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 36 transitions. [2022-07-12 04:27:22,007 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 36 transitions. Word has length 10 [2022-07-12 04:27:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:22,008 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 36 transitions. [2022-07-12 04:27:22,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:27:22,009 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 36 transitions. [2022-07-12 04:27:22,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-12 04:27:22,010 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:22,010 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:22,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 04:27:22,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1984024927, now seen corresponding path program 1 times [2022-07-12 04:27:22,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:22,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241859675] [2022-07-12 04:27:22,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:22,034 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:22,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1798612191] [2022-07-12 04:27:22,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:22,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:22,052 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) [2022-07-12 04:27:22,053 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 04:27:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:22,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:27:22,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:27:22,178 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:27:22,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:22,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241859675] [2022-07-12 04:27:22,179 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:22,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798612191] [2022-07-12 04:27:22,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798612191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:27:22,181 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:27:22,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:27:22,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501171778] [2022-07-12 04:27:22,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:27:22,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:27:22,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:22,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:27:22,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:27:22,185 INFO L87 Difference]: Start difference. First operand 27 states and 36 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:27:22,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:22,217 INFO L93 Difference]: Finished difference Result 37 states and 48 transitions. [2022-07-12 04:27:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:27:22,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-12 04:27:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:22,218 INFO L225 Difference]: With dead ends: 37 [2022-07-12 04:27:22,218 INFO L226 Difference]: Without dead ends: 35 [2022-07-12 04:27:22,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:27:22,219 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:22,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 113 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:27:22,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-12 04:27:22,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32. [2022-07-12 04:27:22,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 23 states have internal predecessors, (26), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2022-07-12 04:27:22,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2022-07-12 04:27:22,225 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 10 [2022-07-12 04:27:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:22,225 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2022-07-12 04:27:22,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:27:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2022-07-12 04:27:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-12 04:27:22,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:22,226 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:22,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 04:27:22,443 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 [2022-07-12 04:27:22,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:22,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:22,444 INFO L85 PathProgramCache]: Analyzing trace with hash -2084809189, now seen corresponding path program 1 times [2022-07-12 04:27:22,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:22,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537159750] [2022-07-12 04:27:22,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:22,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:22,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:22,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039257468] [2022-07-12 04:27:22,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:22,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:22,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:22,453 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) [2022-07-12 04:27:22,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 04:27:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:22,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:27:22,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 04:27:22,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:27:22,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537159750] [2022-07-12 04:27:22,528 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:22,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039257468] [2022-07-12 04:27:22,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039257468] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:27:22,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:27:22,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:27:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325404656] [2022-07-12 04:27:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:27:22,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:27:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:27:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:27:22,530 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:27:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:22,593 INFO L93 Difference]: Finished difference Result 50 states and 66 transitions. [2022-07-12 04:27:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:27:22,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-12 04:27:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:22,594 INFO L225 Difference]: With dead ends: 50 [2022-07-12 04:27:22,594 INFO L226 Difference]: Without dead ends: 47 [2022-07-12 04:27:22,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:27:22,595 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 13 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:22,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:27:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-12 04:27:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-07-12 04:27:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 30 states have internal predecessors, (36), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-12 04:27:22,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 61 transitions. [2022-07-12 04:27:22,607 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 61 transitions. Word has length 15 [2022-07-12 04:27:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:22,607 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 61 transitions. [2022-07-12 04:27:22,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-12 04:27:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 61 transitions. [2022-07-12 04:27:22,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-12 04:27:22,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:22,608 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:22,626 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 04:27:22,824 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 [2022-07-12 04:27:22,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:22,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:22,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2002825724, now seen corresponding path program 1 times [2022-07-12 04:27:22,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:22,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057392666] [2022-07-12 04:27:22,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:22,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:22,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:22,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898210362] [2022-07-12 04:27:22,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:22,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:22,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:22,860 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:27:22,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 04:27:22,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:22,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:27:22,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:22,922 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:27:22,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:27:22,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:22,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057392666] [2022-07-12 04:27:22,923 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:22,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898210362] [2022-07-12 04:27:22,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898210362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:27:22,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:27:22,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 04:27:22,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992133559] [2022-07-12 04:27:22,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:27:22,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:27:22,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:27:22,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:27:22,925 INFO L87 Difference]: Start difference. First operand 46 states and 61 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:27:22,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:22,988 INFO L93 Difference]: Finished difference Result 75 states and 105 transitions. [2022-07-12 04:27:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:27:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-07-12 04:27:22,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:22,990 INFO L225 Difference]: With dead ends: 75 [2022-07-12 04:27:22,991 INFO L226 Difference]: Without dead ends: 73 [2022-07-12 04:27:22,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 04:27:22,991 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 13 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 114 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 [2022-07-12 04:27:22,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 114 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:27:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-12 04:27:22,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 66. [2022-07-12 04:27:22,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 43 states have internal predecessors, (53), 20 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 04:27:23,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2022-07-12 04:27:23,000 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 23 [2022-07-12 04:27:23,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:23,000 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2022-07-12 04:27:23,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:27:23,001 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2022-07-12 04:27:23,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-12 04:27:23,001 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:23,001 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:23,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 04:27:23,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:23,220 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:23,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:23,221 INFO L85 PathProgramCache]: Analyzing trace with hash -840648207, now seen corresponding path program 1 times [2022-07-12 04:27:23,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:23,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141290416] [2022-07-12 04:27:23,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:23,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:23,235 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:23,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [771850802] [2022-07-12 04:27:23,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:23,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:23,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:23,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:27:23,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 04:27:23,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:23,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 04:27:23,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:23,353 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 04:27:23,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:27:23,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141290416] [2022-07-12 04:27:23,354 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:23,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771850802] [2022-07-12 04:27:23,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [771850802] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:27:23,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:27:23,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 04:27:23,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447339977] [2022-07-12 04:27:23,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:27:23,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 04:27:23,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:23,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 04:27:23,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:27:23,356 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:27:23,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:23,374 INFO L93 Difference]: Finished difference Result 105 states and 145 transitions. [2022-07-12 04:27:23,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 04:27:23,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-07-12 04:27:23,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:23,376 INFO L225 Difference]: With dead ends: 105 [2022-07-12 04:27:23,377 INFO L226 Difference]: Without dead ends: 70 [2022-07-12 04:27:23,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 04:27:23,377 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 3 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:23,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 116 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:27:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-12 04:27:23,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-07-12 04:27:23,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 44 states have (on average 1.25) internal successors, (55), 46 states have internal predecessors, (55), 20 states have call successors, (20), 5 states have call predecessors, (20), 5 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 04:27:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2022-07-12 04:27:23,385 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 26 [2022-07-12 04:27:23,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:23,385 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2022-07-12 04:27:23,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-12 04:27:23,386 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2022-07-12 04:27:23,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 04:27:23,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:23,386 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:23,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 04:27:23,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:23,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:23,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:23,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2012484164, now seen corresponding path program 1 times [2022-07-12 04:27:23,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:23,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115566129] [2022-07-12 04:27:23,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:23,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:23,611 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:23,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434606554] [2022-07-12 04:27:23,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:23,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:23,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:23,612 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:27:23,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 04:27:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:23,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 04:27:23,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:23,711 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 04:27:23,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 04:27:23,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:23,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115566129] [2022-07-12 04:27:23,712 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:23,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434606554] [2022-07-12 04:27:23,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434606554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 04:27:23,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 04:27:23,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 04:27:23,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153551356] [2022-07-12 04:27:23,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 04:27:23,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 04:27:23,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:23,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 04:27:23,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 04:27:23,714 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 04:27:23,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:23,783 INFO L93 Difference]: Finished difference Result 76 states and 99 transitions. [2022-07-12 04:27:23,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 04:27:23,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-07-12 04:27:23,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:23,784 INFO L225 Difference]: With dead ends: 76 [2022-07-12 04:27:23,784 INFO L226 Difference]: Without dead ends: 74 [2022-07-12 04:27:23,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:27:23,785 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 31 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:23,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 90 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 04:27:23,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-07-12 04:27:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2022-07-12 04:27:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 47 states have (on average 1.2340425531914894) internal successors, (58), 49 states have internal predecessors, (58), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 04:27:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 97 transitions. [2022-07-12 04:27:23,792 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 97 transitions. Word has length 33 [2022-07-12 04:27:23,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:23,793 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 97 transitions. [2022-07-12 04:27:23,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 04:27:23,793 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 97 transitions. [2022-07-12 04:27:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-12 04:27:23,794 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:23,794 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:23,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-12 04:27:24,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:24,010 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:24,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2020901362, now seen corresponding path program 1 times [2022-07-12 04:27:24,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:24,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467970003] [2022-07-12 04:27:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:24,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:24,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:24,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1276303811] [2022-07-12 04:27:24,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:24,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:24,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:24,022 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:27:24,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 04:27:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:24,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 04:27:24,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:24,214 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 04:27:24,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:27:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 04:27:24,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:24,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467970003] [2022-07-12 04:27:24,393 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:24,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1276303811] [2022-07-12 04:27:24,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1276303811] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:27:24,394 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:27:24,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-07-12 04:27:24,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354503223] [2022-07-12 04:27:24,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:27:24,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 04:27:24,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:24,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 04:27:24,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:27:24,395 INFO L87 Difference]: Start difference. First operand 74 states and 97 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 04:27:24,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:24,531 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2022-07-12 04:27:24,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:27:24,534 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 39 [2022-07-12 04:27:24,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:24,536 INFO L225 Difference]: With dead ends: 80 [2022-07-12 04:27:24,537 INFO L226 Difference]: Without dead ends: 78 [2022-07-12 04:27:24,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:27:24,538 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:24,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 79 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:27:24,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2022-07-12 04:27:24,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2022-07-12 04:27:24,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 20 states have call successors, (20), 7 states have call predecessors, (20), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2022-07-12 04:27:24,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 100 transitions. [2022-07-12 04:27:24,562 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 100 transitions. Word has length 39 [2022-07-12 04:27:24,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:24,563 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 100 transitions. [2022-07-12 04:27:24,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 7 states have internal predecessors, (22), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 04:27:24,563 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 100 transitions. [2022-07-12 04:27:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-12 04:27:24,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:24,565 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:24,583 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 04:27:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:24,781 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:24,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:24,781 INFO L85 PathProgramCache]: Analyzing trace with hash 803844641, now seen corresponding path program 1 times [2022-07-12 04:27:24,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:24,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269662148] [2022-07-12 04:27:24,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:24,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:24,793 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:24,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [466267177] [2022-07-12 04:27:24,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:24,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:24,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:24,797 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:27:24,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 04:27:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:24,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 04:27:24,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:24,881 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 04:27:24,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:27:24,939 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-12 04:27:24,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269662148] [2022-07-12 04:27:24,940 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:24,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [466267177] [2022-07-12 04:27:24,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [466267177] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:27:24,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:27:24,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2022-07-12 04:27:24,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067489573] [2022-07-12 04:27:24,940 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:27:24,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 04:27:24,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:24,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 04:27:24,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-12 04:27:24,942 INFO L87 Difference]: Start difference. First operand 78 states and 100 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-12 04:27:25,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:25,059 INFO L93 Difference]: Finished difference Result 249 states and 303 transitions. [2022-07-12 04:27:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 04:27:25,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 42 [2022-07-12 04:27:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:25,061 INFO L225 Difference]: With dead ends: 249 [2022-07-12 04:27:25,061 INFO L226 Difference]: Without dead ends: 242 [2022-07-12 04:27:25,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-07-12 04:27:25,062 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 112 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:25,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 205 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 04:27:25,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-12 04:27:25,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 231. [2022-07-12 04:27:25,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 150 states have (on average 1.1933333333333334) internal successors, (179), 158 states have internal predecessors, (179), 54 states have call successors, (54), 26 states have call predecessors, (54), 26 states have return successors, (50), 46 states have call predecessors, (50), 50 states have call successors, (50) [2022-07-12 04:27:25,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 283 transitions. [2022-07-12 04:27:25,078 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 283 transitions. Word has length 42 [2022-07-12 04:27:25,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:25,078 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 283 transitions. [2022-07-12 04:27:25,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 10 states have internal predecessors, (38), 5 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-12 04:27:25,078 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 283 transitions. [2022-07-12 04:27:25,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-12 04:27:25,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 04:27:25,079 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:25,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 04:27:25,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:25,298 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 04:27:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 04:27:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1528082637, now seen corresponding path program 1 times [2022-07-12 04:27:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 04:27:25,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493827226] [2022-07-12 04:27:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:25,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 04:27:25,306 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-12 04:27:25,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1642911765] [2022-07-12 04:27:25,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 04:27:25,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 04:27:25,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 04:27:25,307 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 04:27:25,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 04:27:25,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 04:27:25,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 04:27:25,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 04:27:25,436 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 04:27:25,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 04:27:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-12 04:27:25,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 04:27:25,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493827226] [2022-07-12 04:27:25,498 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-12 04:27:25,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642911765] [2022-07-12 04:27:25,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642911765] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 04:27:25,498 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 04:27:25,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2022-07-12 04:27:25,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762438008] [2022-07-12 04:27:25,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 04:27:25,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 04:27:25,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 04:27:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 04:27:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-12 04:27:25,500 INFO L87 Difference]: Start difference. First operand 231 states and 283 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 04:27:25,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 04:27:25,710 INFO L93 Difference]: Finished difference Result 259 states and 314 transitions. [2022-07-12 04:27:25,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 04:27:25,711 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 47 [2022-07-12 04:27:25,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 04:27:25,711 INFO L225 Difference]: With dead ends: 259 [2022-07-12 04:27:25,711 INFO L226 Difference]: Without dead ends: 0 [2022-07-12 04:27:25,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-07-12 04:27:25,713 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 56 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 04:27:25,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 118 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 04:27:25,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-12 04:27:25,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-12 04:27:25,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 04:27:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-12 04:27:25,714 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2022-07-12 04:27:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 04:27:25,714 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-12 04:27:25,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 5 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-07-12 04:27:25,714 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-12 04:27:25,715 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-12 04:27:25,716 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 04:27:25,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 04:27:25,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 04:27:25,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-12 04:27:26,336 INFO L902 garLoopResultBuilder]: At program point L64(lines 23 65) the Hoare annotation is: true [2022-07-12 04:27:26,336 INFO L895 garLoopResultBuilder]: At program point L48(line 48) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 13) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point L49(lines 46 58) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point L37-1(lines 37 61) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L895 garLoopResultBuilder]: At program point L37-3(lines 37 61) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-12 04:27:26,336 INFO L895 garLoopResultBuilder]: At program point L37-4(lines 37 61) the Hoare annotation is: (or (and (= |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~q~0#1| 0)) (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0))))) [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (<= (* .cse1 2) |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse1 |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point L54-1(line 54) no Hoare annotation was computed. [2022-07-12 04:27:26,336 INFO L899 garLoopResultBuilder]: For program point L46-1(lines 46 58) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L895 garLoopResultBuilder]: At program point L46-3(lines 46 58) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= .cse0 |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ .cse0 |ULTIMATE.start_main_~r~0#1| (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))))) [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point L46-4(lines 46 58) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-12 04:27:26,337 INFO L895 garLoopResultBuilder]: At program point L38-1(line 38) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point L63(line 63) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L895 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-12 04:27:26,337 INFO L895 garLoopResultBuilder]: At program point L47-1(line 47) the Hoare annotation is: (let ((.cse0 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~y~0#1|))) (and (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_main_~x~0#1| (+ |ULTIMATE.start_main_~r~0#1| .cse0)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~r~0#1|) (= (+ |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~x~0#1|) (+ (* |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_~r~0#1| .cse0)))) [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point L39(lines 37 61) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 17) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 18) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 20) the Hoare annotation is: true [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point L15-2(lines 14 20) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 20) no Hoare annotation was computed. [2022-07-12 04:27:26,337 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-07-12 04:27:26,340 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 04:27:26,341 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 04:27:26,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 04:27:26 BoogieIcfgContainer [2022-07-12 04:27:26,350 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 04:27:26,351 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 04:27:26,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 04:27:26,351 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 04:27:26,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 04:27:21" (3/4) ... [2022-07-12 04:27:26,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 04:27:26,357 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-12 04:27:26,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-07-12 04:27:26,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-12 04:27:26,359 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 04:27:26,360 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 04:27:26,380 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 04:27:26,380 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 04:27:26,380 INFO L158 Benchmark]: Toolchain (without parser) took 5347.90ms. Allocated memory was 96.5MB in the beginning and 180.4MB in the end (delta: 83.9MB). Free memory was 65.8MB in the beginning and 148.5MB in the end (delta: -82.7MB). Peak memory consumption was 471.2kB. Max. memory is 16.1GB. [2022-07-12 04:27:26,380 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 52.8MB in the beginning and 52.7MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:27:26,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.88ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 65.6MB in the beginning and 113.6MB in the end (delta: -48.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 04:27:26,381 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.13ms. Allocated memory is still 138.4MB. Free memory was 113.6MB in the beginning and 112.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 04:27:26,381 INFO L158 Benchmark]: Boogie Preprocessor took 29.03ms. Allocated memory is still 138.4MB. Free memory was 112.3MB in the beginning and 111.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:27:26,381 INFO L158 Benchmark]: RCFGBuilder took 275.63ms. Allocated memory is still 138.4MB. Free memory was 111.1MB in the beginning and 101.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 04:27:26,382 INFO L158 Benchmark]: TraceAbstraction took 4765.89ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 100.6MB in the beginning and 151.6MB in the end (delta: -51.0MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. [2022-07-12 04:27:26,382 INFO L158 Benchmark]: Witness Printer took 29.28ms. Allocated memory is still 180.4MB. Free memory was 151.6MB in the beginning and 148.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 04:27:26,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 96.5MB. Free memory was 52.8MB in the beginning and 52.7MB in the end (delta: 38.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 215.88ms. Allocated memory was 96.5MB in the beginning and 138.4MB in the end (delta: 41.9MB). Free memory was 65.6MB in the beginning and 113.6MB in the end (delta: -48.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.13ms. Allocated memory is still 138.4MB. Free memory was 113.6MB in the beginning and 112.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 29.03ms. Allocated memory is still 138.4MB. Free memory was 112.3MB in the beginning and 111.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 275.63ms. Allocated memory is still 138.4MB. Free memory was 111.1MB in the beginning and 101.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4765.89ms. Allocated memory was 138.4MB in the beginning and 180.4MB in the end (delta: 41.9MB). Free memory was 100.6MB in the beginning and 151.6MB in the end (delta: -51.0MB). Peak memory consumption was 73.2MB. Max. memory is 16.1GB. * Witness Printer took 29.28ms. Allocated memory is still 180.4MB. Free memory was 151.6MB in the beginning and 148.5MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.7s, OverallIterations: 10, TraceHistogramMax: 7, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 282 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 266 mSDsluCounter, 1069 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 722 mSDsCounter, 165 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 684 IncrementalHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 165 mSolverCounterUnsat, 347 mSDtfsCounter, 684 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 374 GetRequests, 312 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=231occurred in iteration=9, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 22 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 90 PreInvPairs, 171 NumberOfFragments, 264 HoareAnnotationTreeSize, 90 FomulaSimplifications, 3 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 11 FomulaSimplificationsInter, 2967 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 369 ConstructedInterpolants, 0 QuantifiedInterpolants, 998 SizeOfPredicates, 21 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 358/408 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (((cond == 1 && a * y == b) && 1 <= y) && 1 <= r) && b + x == a * y + r + q * y - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((cond == 1 && x == r + q * y) && 1 <= y) && b + x == a * y + r + q * y RESULT: Ultimate proved your program to be correct! [2022-07-12 04:27:26,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE