./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 16:03:18,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 16:03:18,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 16:03:19,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 16:03:19,034 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 16:03:19,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 16:03:19,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 16:03:19,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 16:03:19,039 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 16:03:19,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 16:03:19,041 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 16:03:19,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 16:03:19,043 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 16:03:19,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 16:03:19,046 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 16:03:19,048 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 16:03:19,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 16:03:19,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 16:03:19,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 16:03:19,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 16:03:19,064 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 16:03:19,064 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 16:03:19,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 16:03:19,066 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 16:03:19,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 16:03:19,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 16:03:19,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 16:03:19,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 16:03:19,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 16:03:19,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 16:03:19,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 16:03:19,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 16:03:19,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 16:03:19,071 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 16:03:19,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 16:03:19,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 16:03:19,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 16:03:19,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 16:03:19,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 16:03:19,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 16:03:19,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 16:03:19,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 16:03:19,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 16:03:19,102 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 16:03:19,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 16:03:19,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 16:03:19,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 16:03:19,103 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 16:03:19,104 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 16:03:19,104 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 16:03:19,104 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 16:03:19,104 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 16:03:19,105 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 16:03:19,105 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 16:03:19,106 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 16:03:19,106 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 16:03:19,106 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 16:03:19,106 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 16:03:19,106 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 16:03:19,106 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 16:03:19,106 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 16:03:19,107 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 16:03:19,107 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 16:03:19,107 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 16:03:19,107 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 16:03:19,107 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 16:03:19,107 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 16:03:19,108 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:03:19,108 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 16:03:19,108 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 16:03:19,108 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 16:03:19,108 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 16:03:19,109 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 16:03:19,109 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 16:03:19,109 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 16:03:19,109 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 16:03:19,109 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c004ecbeb3948e318f4c5fc8011bd289b059bb9dbb2959c45853a9680cf20f [2022-07-22 16:03:19,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 16:03:19,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 16:03:19,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 16:03:19,289 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 16:03:19,290 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 16:03:19,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2022-07-22 16:03:19,334 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779b6ae88/03c7ce438d354131a745ea0270bd1611/FLAG85aa1eb72 [2022-07-22 16:03:19,691 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 16:03:19,691 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_valuebound1.c [2022-07-22 16:03:19,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779b6ae88/03c7ce438d354131a745ea0270bd1611/FLAG85aa1eb72 [2022-07-22 16:03:20,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/779b6ae88/03c7ce438d354131a745ea0270bd1611 [2022-07-22 16:03:20,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 16:03:20,090 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 16:03:20,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 16:03:20,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 16:03:20,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 16:03:20,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@771c4537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20, skipping insertion in model container [2022-07-22 16:03:20,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,114 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 16:03:20,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 16:03:20,225 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/egcd3-ll_valuebound1.c[490,503] [2022-07-22 16:03:20,253 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:03:20,261 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 16:03:20,271 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/egcd3-ll_valuebound1.c[490,503] [2022-07-22 16:03:20,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 16:03:20,285 INFO L208 MainTranslator]: Completed translation [2022-07-22 16:03:20,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20 WrapperNode [2022-07-22 16:03:20,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 16:03:20,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 16:03:20,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 16:03:20,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 16:03:20,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,309 INFO L137 Inliner]: procedures = 14, calls = 16, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2022-07-22 16:03:20,310 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 16:03:20,311 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 16:03:20,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 16:03:20,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 16:03:20,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,317 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 16:03:20,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 16:03:20,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 16:03:20,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 16:03:20,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (1/1) ... [2022-07-22 16:03:20,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 16:03:20,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:20,365 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) [2022-07-22 16:03:20,370 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 [2022-07-22 16:03:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 16:03:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 16:03:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 16:03:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 16:03:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 16:03:20,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 16:03:20,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 16:03:20,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 16:03:20,451 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 16:03:20,452 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 16:03:20,545 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 16:03:20,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 16:03:20,549 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 16:03:20,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:03:20 BoogieIcfgContainer [2022-07-22 16:03:20,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 16:03:20,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 16:03:20,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 16:03:20,554 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 16:03:20,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 04:03:20" (1/3) ... [2022-07-22 16:03:20,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d372aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:03:20, skipping insertion in model container [2022-07-22 16:03:20,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 04:03:20" (2/3) ... [2022-07-22 16:03:20,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d372aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 04:03:20, skipping insertion in model container [2022-07-22 16:03:20,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:03:20" (3/3) ... [2022-07-22 16:03:20,557 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_valuebound1.c [2022-07-22 16:03:20,566 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 16:03:20,566 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 16:03:20,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 16:03:20,603 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@1f072973, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d1955a6 [2022-07-22 16:03:20,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 16:03:20,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-07-22 16:03:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-07-22 16:03:20,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:20,612 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:20,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:20,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash 872320404, now seen corresponding path program 1 times [2022-07-22 16:03:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:20,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178149723] [2022-07-22 16:03:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:20,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 16:03:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 16:03:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 16:03:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 16:03:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:20,771 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:03:20,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:20,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178149723] [2022-07-22 16:03:20,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178149723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:03:20,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:03:20,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 16:03:20,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953673408] [2022-07-22 16:03:20,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:03:20,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 16:03:20,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 16:03:20,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:03:20,812 INFO L87 Difference]: Start difference. First operand has 35 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 23 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 16:03:20,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:20,833 INFO L93 Difference]: Finished difference Result 67 states and 109 transitions. [2022-07-22 16:03:20,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 16:03:20,835 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-07-22 16:03:20,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:20,840 INFO L225 Difference]: With dead ends: 67 [2022-07-22 16:03:20,840 INFO L226 Difference]: Without dead ends: 31 [2022-07-22 16:03:20,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 16:03:20,847 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:20,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:03:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-22 16:03:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-07-22 16:03:20,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 20 states have internal predecessors, (23), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-22 16:03:20,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2022-07-22 16:03:20,884 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 29 [2022-07-22 16:03:20,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:20,884 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2022-07-22 16:03:20,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 16:03:20,885 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2022-07-22 16:03:20,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-22 16:03:20,888 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:20,889 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:20,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 16:03:20,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:20,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:20,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1714405113, now seen corresponding path program 1 times [2022-07-22 16:03:20,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:20,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562461882] [2022-07-22 16:03:20,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:20,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:20,933 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:20,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630820019] [2022-07-22 16:03:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:20,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:20,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:20,942 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) [2022-07-22 16:03:20,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 16:03:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:21,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:03:21,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:03:21,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:03:21,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:21,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562461882] [2022-07-22 16:03:21,139 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:21,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630820019] [2022-07-22 16:03:21,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630820019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:03:21,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:03:21,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 16:03:21,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581303761] [2022-07-22 16:03:21,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:03:21,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 16:03:21,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:21,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 16:03:21,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:03:21,142 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 16:03:21,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:21,244 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2022-07-22 16:03:21,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:03:21,244 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 30 [2022-07-22 16:03:21,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:21,245 INFO L225 Difference]: With dead ends: 50 [2022-07-22 16:03:21,245 INFO L226 Difference]: Without dead ends: 43 [2022-07-22 16:03:21,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-22 16:03:21,247 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 31 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:21,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 113 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:03:21,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-07-22 16:03:21,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2022-07-22 16:03:21,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 22 states have internal predecessors, (25), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-07-22 16:03:21,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2022-07-22 16:03:21,254 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 30 [2022-07-22 16:03:21,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:21,255 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2022-07-22 16:03:21,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 16:03:21,255 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2022-07-22 16:03:21,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-22 16:03:21,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:21,256 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:21,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 16:03:21,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:21,466 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:21,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:21,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1825736765, now seen corresponding path program 1 times [2022-07-22 16:03:21,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:21,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242855506] [2022-07-22 16:03:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:21,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:21,484 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:21,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868163181] [2022-07-22 16:03:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:21,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:21,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:21,488 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) [2022-07-22 16:03:21,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 16:03:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:21,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 16:03:21,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:21,810 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:03:21,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:21,947 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:03:21,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:21,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242855506] [2022-07-22 16:03:21,948 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:21,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868163181] [2022-07-22 16:03:21,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [868163181] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 16:03:21,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:03:21,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2022-07-22 16:03:21,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410458411] [2022-07-22 16:03:21,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:03:21,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:03:21,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:21,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:03:21,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:03:21,951 INFO L87 Difference]: Start difference. First operand 33 states and 42 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), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 16:03:22,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:22,010 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-07-22 16:03:22,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 16:03:22,010 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), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 33 [2022-07-22 16:03:22,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:22,011 INFO L225 Difference]: With dead ends: 49 [2022-07-22 16:03:22,011 INFO L226 Difference]: Without dead ends: 47 [2022-07-22 16:03:22,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:03:22,012 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 16 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:22,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 172 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:03:22,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-07-22 16:03:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2022-07-22 16:03:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 29 states have (on average 1.206896551724138) internal successors, (35), 30 states have internal predecessors, (35), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-22 16:03:22,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2022-07-22 16:03:22,019 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 33 [2022-07-22 16:03:22,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:22,020 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2022-07-22 16:03:22,020 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), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-22 16:03:22,020 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2022-07-22 16:03:22,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-22 16:03:22,021 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:22,021 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:22,039 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:22,239 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,SelfDestructingSolverStorable2 [2022-07-22 16:03:22,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:22,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:22,240 INFO L85 PathProgramCache]: Analyzing trace with hash -1547103247, now seen corresponding path program 1 times [2022-07-22 16:03:22,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:22,242 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603288445] [2022-07-22 16:03:22,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:22,251 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:22,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938244437] [2022-07-22 16:03:22,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:22,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:22,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:22,263 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) [2022-07-22 16:03:22,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 16:03:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:22,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-22 16:03:22,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:22,354 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:03:22,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:22,405 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-07-22 16:03:22,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:22,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603288445] [2022-07-22 16:03:22,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:22,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938244437] [2022-07-22 16:03:22,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938244437] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:03:22,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:03:22,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2022-07-22 16:03:22,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317574412] [2022-07-22 16:03:22,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:03:22,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 16:03:22,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:22,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 16:03:22,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 16:03:22,408 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 16:03:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:22,553 INFO L93 Difference]: Finished difference Result 99 states and 139 transitions. [2022-07-22 16:03:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 16:03:22,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-07-22 16:03:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:22,555 INFO L225 Difference]: With dead ends: 99 [2022-07-22 16:03:22,555 INFO L226 Difference]: Without dead ends: 92 [2022-07-22 16:03:22,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:03:22,556 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 58 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:22,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 242 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:03:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-07-22 16:03:22,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2022-07-22 16:03:22,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-22 16:03:22,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2022-07-22 16:03:22,569 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 35 [2022-07-22 16:03:22,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:22,569 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2022-07-22 16:03:22,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 8 states have internal predecessors, (22), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-22 16:03:22,570 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2022-07-22 16:03:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 16:03:22,570 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:22,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:22,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:22,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:22,786 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:22,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:22,787 INFO L85 PathProgramCache]: Analyzing trace with hash -720434099, now seen corresponding path program 1 times [2022-07-22 16:03:22,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:22,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117240905] [2022-07-22 16:03:22,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:22,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:22,806 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:22,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [512649517] [2022-07-22 16:03:22,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:22,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:22,807 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:22,808 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) [2022-07-22 16:03:22,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 16:03:22,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:22,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-22 16:03:22,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:22,994 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:03:22,994 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:23,084 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:03:23,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:23,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117240905] [2022-07-22 16:03:23,085 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:23,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512649517] [2022-07-22 16:03:23,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512649517] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 16:03:23,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:03:23,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 14 [2022-07-22 16:03:23,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539444516] [2022-07-22 16:03:23,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:03:23,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 16:03:23,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:23,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 16:03:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-22 16:03:23,087 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 16:03:23,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:23,151 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2022-07-22 16:03:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 16:03:23,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 38 [2022-07-22 16:03:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:23,152 INFO L225 Difference]: With dead ends: 75 [2022-07-22 16:03:23,152 INFO L226 Difference]: Without dead ends: 73 [2022-07-22 16:03:23,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-07-22 16:03:23,153 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 21 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:23,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 150 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:03:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-22 16:03:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 71. [2022-07-22 16:03:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 49 states have (on average 1.2448979591836735) internal successors, (61), 50 states have internal predecessors, (61), 17 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-22 16:03:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2022-07-22 16:03:23,162 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 38 [2022-07-22 16:03:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:23,162 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2022-07-22 16:03:23,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-22 16:03:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2022-07-22 16:03:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 16:03:23,163 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:23,163 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:23,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:23,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:23,381 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:23,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:23,381 INFO L85 PathProgramCache]: Analyzing trace with hash -376152117, now seen corresponding path program 1 times [2022-07-22 16:03:23,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:23,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574572121] [2022-07-22 16:03:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:23,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:23,390 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:23,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1666647568] [2022-07-22 16:03:23,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:23,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:23,399 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) [2022-07-22 16:03:23,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 16:03:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:23,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-22 16:03:23,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:23,487 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:03:23,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:23,573 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 16:03:23,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574572121] [2022-07-22 16:03:23,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:23,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666647568] [2022-07-22 16:03:23,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666647568] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:03:23,574 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:03:23,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2022-07-22 16:03:23,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59410385] [2022-07-22 16:03:23,575 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:03:23,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 16:03:23,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:23,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 16:03:23,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:03:23,576 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 16:03:23,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:23,752 INFO L93 Difference]: Finished difference Result 98 states and 132 transitions. [2022-07-22 16:03:23,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 16:03:23,752 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 38 [2022-07-22 16:03:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:23,753 INFO L225 Difference]: With dead ends: 98 [2022-07-22 16:03:23,753 INFO L226 Difference]: Without dead ends: 60 [2022-07-22 16:03:23,754 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2022-07-22 16:03:23,754 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 45 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:23,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 193 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:03:23,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-07-22 16:03:23,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2022-07-22 16:03:23,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 35 states have internal predecessors, (40), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-07-22 16:03:23,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2022-07-22 16:03:23,761 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 38 [2022-07-22 16:03:23,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:23,762 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2022-07-22 16:03:23,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.727272727272727) internal successors, (30), 9 states have internal predecessors, (30), 6 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2022-07-22 16:03:23,762 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2022-07-22 16:03:23,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-22 16:03:23,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:23,763 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:23,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:23,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:23,980 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:23,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:23,980 INFO L85 PathProgramCache]: Analyzing trace with hash 279172547, now seen corresponding path program 1 times [2022-07-22 16:03:23,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:23,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345041827] [2022-07-22 16:03:23,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:23,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:23,992 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:23,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888053782] [2022-07-22 16:03:23,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:23,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:23,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:24,001 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) [2022-07-22 16:03:24,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 16:03:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:24,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:03:24,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:24,056 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-22 16:03:24,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 16:03:24,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:24,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345041827] [2022-07-22 16:03:24,057 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:24,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888053782] [2022-07-22 16:03:24,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [888053782] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 16:03:24,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 16:03:24,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 16:03:24,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35181965] [2022-07-22 16:03:24,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:03:24,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:03:24,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:24,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:03:24,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 16:03:24,059 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 16:03:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:24,097 INFO L93 Difference]: Finished difference Result 75 states and 98 transitions. [2022-07-22 16:03:24,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:03:24,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 43 [2022-07-22 16:03:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:24,098 INFO L225 Difference]: With dead ends: 75 [2022-07-22 16:03:24,098 INFO L226 Difference]: Without dead ends: 73 [2022-07-22 16:03:24,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 16:03:24,099 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 8 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:24,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 136 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 16:03:24,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2022-07-22 16:03:24,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2022-07-22 16:03:24,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 44 states have internal predecessors, (52), 21 states have call successors, (21), 5 states have call predecessors, (21), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-22 16:03:24,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 93 transitions. [2022-07-22 16:03:24,109 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 93 transitions. Word has length 43 [2022-07-22 16:03:24,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:24,110 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 93 transitions. [2022-07-22 16:03:24,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-22 16:03:24,110 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 93 transitions. [2022-07-22 16:03:24,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-22 16:03:24,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:24,111 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:24,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:24,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:24,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1189241395, now seen corresponding path program 1 times [2022-07-22 16:03:24,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:24,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992576937] [2022-07-22 16:03:24,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:24,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:24,339 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:24,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144820171] [2022-07-22 16:03:24,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:24,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:24,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:24,340 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) [2022-07-22 16:03:24,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 16:03:24,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:24,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-22 16:03:24,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-22 16:03:24,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 16:03:24,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:24,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992576937] [2022-07-22 16:03:24,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:24,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144820171] [2022-07-22 16:03:24,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144820171] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-22 16:03:24,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 16:03:24,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 12 [2022-07-22 16:03:24,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722269801] [2022-07-22 16:03:24,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 16:03:24,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 16:03:24,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 16:03:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:03:24,569 INFO L87 Difference]: Start difference. First operand 70 states and 93 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 16:03:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:24,716 INFO L93 Difference]: Finished difference Result 77 states and 99 transitions. [2022-07-22 16:03:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 16:03:24,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 48 [2022-07-22 16:03:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:24,717 INFO L225 Difference]: With dead ends: 77 [2022-07-22 16:03:24,717 INFO L226 Difference]: Without dead ends: 75 [2022-07-22 16:03:24,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-22 16:03:24,718 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 9 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:24,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 117 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:03:24,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-07-22 16:03:24,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2022-07-22 16:03:24,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 47 states have internal predecessors, (55), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-22 16:03:24,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 96 transitions. [2022-07-22 16:03:24,729 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 96 transitions. Word has length 48 [2022-07-22 16:03:24,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:24,729 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 96 transitions. [2022-07-22 16:03:24,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-22 16:03:24,729 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 96 transitions. [2022-07-22 16:03:24,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-22 16:03:24,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:24,730 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:24,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:24,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:24,943 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:24,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:24,944 INFO L85 PathProgramCache]: Analyzing trace with hash -828341661, now seen corresponding path program 1 times [2022-07-22 16:03:24,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:24,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712520235] [2022-07-22 16:03:24,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:24,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:24,953 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:24,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [146034654] [2022-07-22 16:03:24,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:24,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:24,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:24,955 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) [2022-07-22 16:03:24,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 16:03:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:24,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-22 16:03:24,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:25,603 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:03:25,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:26,309 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 16:03:26,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:26,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712520235] [2022-07-22 16:03:26,310 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:26,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [146034654] [2022-07-22 16:03:26,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [146034654] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:03:26,310 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:03:26,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 25 [2022-07-22 16:03:26,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119088684] [2022-07-22 16:03:26,310 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:03:26,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 16:03:26,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:26,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 16:03:26,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2022-07-22 16:03:26,311 INFO L87 Difference]: Start difference. First operand 74 states and 96 transitions. Second operand has 25 states, 25 states have (on average 1.96) internal successors, (49), 23 states have internal predecessors, (49), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-22 16:03:37,046 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:03:38,080 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-07-22 16:03:39,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:39,151 INFO L93 Difference]: Finished difference Result 245 states and 357 transitions. [2022-07-22 16:03:39,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 16:03:39,152 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 23 states have internal predecessors, (49), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) Word has length 60 [2022-07-22 16:03:39,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:39,157 INFO L225 Difference]: With dead ends: 245 [2022-07-22 16:03:39,157 INFO L226 Difference]: Without dead ends: 208 [2022-07-22 16:03:39,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 94 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=458, Invalid=2404, Unknown=0, NotChecked=0, Total=2862 [2022-07-22 16:03:39,161 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 192 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 290 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 1993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 290 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:39,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 343 Invalid, 1993 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [290 Valid, 1702 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-07-22 16:03:39,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-07-22 16:03:39,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 151. [2022-07-22 16:03:39,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 92 states have (on average 1.25) internal successors, (115), 94 states have internal predecessors, (115), 51 states have call successors, (51), 7 states have call predecessors, (51), 7 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-22 16:03:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 215 transitions. [2022-07-22 16:03:39,202 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 215 transitions. Word has length 60 [2022-07-22 16:03:39,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:39,202 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 215 transitions. [2022-07-22 16:03:39,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.96) internal successors, (49), 23 states have internal predecessors, (49), 8 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 6 states have call successors, (16) [2022-07-22 16:03:39,203 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 215 transitions. [2022-07-22 16:03:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-22 16:03:39,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:39,204 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:39,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:39,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-22 16:03:39,406 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:39,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:39,407 INFO L85 PathProgramCache]: Analyzing trace with hash 2000413383, now seen corresponding path program 2 times [2022-07-22 16:03:39,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:39,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111494975] [2022-07-22 16:03:39,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:39,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:39,427 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:39,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033617702] [2022-07-22 16:03:39,428 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 16:03:39,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:39,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:39,431 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:03:39,431 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 16:03:39,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 16:03:39,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 16:03:39,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 16:03:39,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:39,540 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 16:03:39,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:39,603 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-22 16:03:39,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:39,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111494975] [2022-07-22 16:03:39,603 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:39,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033617702] [2022-07-22 16:03:39,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033617702] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:03:39,604 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:03:39,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-22 16:03:39,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996060455] [2022-07-22 16:03:39,604 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:03:39,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 16:03:39,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:39,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 16:03:39,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-22 16:03:39,606 INFO L87 Difference]: Start difference. First operand 151 states and 215 transitions. Second operand has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:03:39,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:39,894 INFO L93 Difference]: Finished difference Result 245 states and 340 transitions. [2022-07-22 16:03:39,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 16:03:39,895 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 65 [2022-07-22 16:03:39,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:39,896 INFO L225 Difference]: With dead ends: 245 [2022-07-22 16:03:39,896 INFO L226 Difference]: Without dead ends: 174 [2022-07-22 16:03:39,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2022-07-22 16:03:39,897 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 36 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:39,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 282 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:03:39,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-22 16:03:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 163. [2022-07-22 16:03:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 98 states have (on average 1.1938775510204083) internal successors, (117), 99 states have internal predecessors, (117), 57 states have call successors, (57), 7 states have call predecessors, (57), 7 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) [2022-07-22 16:03:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 230 transitions. [2022-07-22 16:03:39,928 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 230 transitions. Word has length 65 [2022-07-22 16:03:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:39,929 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 230 transitions. [2022-07-22 16:03:39,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.4166666666666665) internal successors, (41), 12 states have internal predecessors, (41), 4 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-22 16:03:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 230 transitions. [2022-07-22 16:03:39,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-22 16:03:39,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:39,930 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:39,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:40,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-22 16:03:40,135 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:40,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1382204855, now seen corresponding path program 1 times [2022-07-22 16:03:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:40,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064472643] [2022-07-22 16:03:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:40,142 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:40,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2016782079] [2022-07-22 16:03:40,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:40,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:40,152 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:03:40,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 16:03:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:40,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-22 16:03:40,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:40,313 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 33 proven. 11 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-22 16:03:40,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-22 16:03:40,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064472643] [2022-07-22 16:03:40,490 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:40,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016782079] [2022-07-22 16:03:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016782079] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:03:40,490 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:03:40,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2022-07-22 16:03:40,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524317037] [2022-07-22 16:03:40,491 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:03:40,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 16:03:40,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:40,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 16:03:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-07-22 16:03:40,492 INFO L87 Difference]: Start difference. First operand 163 states and 230 transitions. Second operand has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-22 16:03:40,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:40,744 INFO L93 Difference]: Finished difference Result 200 states and 272 transitions. [2022-07-22 16:03:40,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 16:03:40,744 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) Word has length 68 [2022-07-22 16:03:40,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:40,745 INFO L225 Difference]: With dead ends: 200 [2022-07-22 16:03:40,745 INFO L226 Difference]: Without dead ends: 65 [2022-07-22 16:03:40,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2022-07-22 16:03:40,746 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 35 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:40,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 178 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 16:03:40,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-07-22 16:03:40,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2022-07-22 16:03:40,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 16 states have call successors, (16), 6 states have call predecessors, (16), 6 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-07-22 16:03:40,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 70 transitions. [2022-07-22 16:03:40,754 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 70 transitions. Word has length 68 [2022-07-22 16:03:40,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:40,754 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 70 transitions. [2022-07-22 16:03:40,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.588235294117647) internal successors, (44), 17 states have internal predecessors, (44), 6 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 5 states have call predecessors, (18), 6 states have call successors, (18) [2022-07-22 16:03:40,754 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 70 transitions. [2022-07-22 16:03:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-22 16:03:40,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 16:03:40,755 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:40,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:40,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-22 16:03:40,971 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 16:03:40,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 16:03:40,972 INFO L85 PathProgramCache]: Analyzing trace with hash -275231594, now seen corresponding path program 1 times [2022-07-22 16:03:40,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 16:03:40,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042752616] [2022-07-22 16:03:40,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:40,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 16:03:40,979 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 16:03:40,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [495056571] [2022-07-22 16:03:40,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 16:03:40,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 16:03:40,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 16:03:40,987 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 16:03:40,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 16:03:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 16:03:41,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-22 16:03:41,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 16:03:41,201 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 90 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-22 16:03:41,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 16:03:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-07-22 16:03:41,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 16:03:41,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042752616] [2022-07-22 16:03:41,406 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 16:03:41,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495056571] [2022-07-22 16:03:41,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495056571] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 16:03:41,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 16:03:41,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2022-07-22 16:03:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613524322] [2022-07-22 16:03:41,407 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 16:03:41,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 16:03:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 16:03:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 16:03:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-07-22 16:03:41,408 INFO L87 Difference]: Start difference. First operand 59 states and 70 transitions. Second operand has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-22 16:03:41,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 16:03:41,635 INFO L93 Difference]: Finished difference Result 71 states and 79 transitions. [2022-07-22 16:03:41,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 16:03:41,635 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) Word has length 90 [2022-07-22 16:03:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 16:03:41,635 INFO L225 Difference]: With dead ends: 71 [2022-07-22 16:03:41,635 INFO L226 Difference]: Without dead ends: 0 [2022-07-22 16:03:41,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2022-07-22 16:03:41,636 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 36 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 16:03:41,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 175 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 16:03:41,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-07-22 16:03:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-07-22 16:03:41,637 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) [2022-07-22 16:03:41,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-07-22 16:03:41,637 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2022-07-22 16:03:41,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 16:03:41,637 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-07-22 16:03:41,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 19 states have internal predecessors, (45), 8 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (28), 7 states have call predecessors, (28), 8 states have call successors, (28) [2022-07-22 16:03:41,637 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-07-22 16:03:41,637 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-07-22 16:03:41,639 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 16:03:41,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-22 16:03:41,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-22 16:03:41,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-07-22 16:03:44,467 INFO L895 garLoopResultBuilder]: At program point L35-2(lines 35 73) the Hoare annotation is: (let ((.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse3 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse4 (<= |ULTIMATE.start_main_~y~0#1| 1)) (.cse0 (+ (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|) (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)))) (or (and (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| .cse1 .cse2)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~b~0#1|) (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse3 (<= 1 |ULTIMATE.start_main_~x~0#1|) (< (* 2 |ULTIMATE.start_main_~b~0#1|) 1) .cse4 (< |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~a~0#1|)) (and (= (+ .cse1 .cse2) |ULTIMATE.start_main_~b~0#1|) (<= 1 |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) .cse3 .cse4 (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= .cse0 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1)))) [2022-07-22 16:03:44,468 INFO L895 garLoopResultBuilder]: At program point L35-3(lines 35 73) the Hoare annotation is: (let ((.cse3 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse4 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (+ .cse3 .cse4)) (.cse1 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse2 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (= .cse0 (+ |ULTIMATE.start_main_~a~0#1| .cse1 .cse2)) (or (= |ULTIMATE.start_main_~b~0#1| 0) (< |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~b~0#1|) (= .cse0 |ULTIMATE.start_main_~a~0#1|)) (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1) (or (= (+ .cse3 |ULTIMATE.start_main_~b~0#1| .cse4) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) (* 2 .cse2) (* 2 .cse1))) (<= |ULTIMATE.start_main_~b~0#1| (div |ULTIMATE.start_main_~c~0#1| 2)) (not (= (+ .cse1 .cse2) |ULTIMATE.start_main_~b~0#1|)))))) [2022-07-22 16:03:44,468 INFO L895 garLoopResultBuilder]: At program point L52(line 52) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)))))) [2022-07-22 16:03:44,468 INFO L899 garLoopResultBuilder]: For program point L36(lines 36 37) no Hoare annotation was computed. [2022-07-22 16:03:44,468 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-07-22 16:03:44,468 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-07-22 16:03:44,468 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-07-22 16:03:44,468 INFO L895 garLoopResultBuilder]: At program point L24(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1)) [2022-07-22 16:03:44,468 INFO L895 garLoopResultBuilder]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2022-07-22 16:03:44,469 INFO L899 garLoopResultBuilder]: For program point L53(lines 49 59) no Hoare annotation was computed. [2022-07-22 16:03:44,469 INFO L895 garLoopResultBuilder]: At program point L49-2(lines 49 59) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)))))) [2022-07-22 16:03:44,469 INFO L899 garLoopResultBuilder]: For program point L49-3(lines 49 59) no Hoare annotation was computed. [2022-07-22 16:03:44,469 INFO L899 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2022-07-22 16:03:44,469 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-07-22 16:03:44,470 INFO L895 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= 1 |ULTIMATE.start_main_~x~0#1|) (<= |ULTIMATE.start_main_~y~0#1| 1)) [2022-07-22 16:03:44,470 INFO L895 garLoopResultBuilder]: At program point L50(line 50) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)))))) [2022-07-22 16:03:44,470 INFO L895 garLoopResultBuilder]: At program point L50-1(line 50) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)))))) [2022-07-22 16:03:44,470 INFO L902 garLoopResultBuilder]: At program point L75(lines 18 76) the Hoare annotation is: true [2022-07-22 16:03:44,471 INFO L895 garLoopResultBuilder]: At program point L42-2(lines 42 62) the Hoare annotation is: (let ((.cse10 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse11 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse8 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse9 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (let ((.cse0 (= (+ .cse8 .cse9) |ULTIMATE.start_main_~b~0#1|)) (.cse1 (= |ULTIMATE.start_main_~r~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~q~0#1| 0)) (.cse3 (<= 1 |ULTIMATE.start_main_~a~0#1|)) (.cse4 (<= |ULTIMATE.start_main_~x~0#1| 1)) (.cse5 (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse6 (= (+ .cse10 .cse11) |ULTIMATE.start_main_~a~0#1|)) (.cse7 (= |ULTIMATE.start_main_~s~0#1| 1))) (or (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (<= 1 |ULTIMATE.start_main_~c~0#1|) .cse0 .cse1 .cse2 .cse3 (= |ULTIMATE.start_main_~k~0#1| 0) .cse4 (<= |ULTIMATE.start_main_~y~0#1| 1) .cse5 .cse6 (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) .cse7) (let ((.cse13 (* (- 1) |ULTIMATE.start_main_~c~0#1|))) (let ((.cse12 (div (+ (- 1) .cse13) (- 2)))) (and (= (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse8 .cse9) (+ .cse10 |ULTIMATE.start_main_~b~0#1| .cse11)) (< .cse12 (+ |ULTIMATE.start_main_~b~0#1| 1)) (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|) (<= |ULTIMATE.start_main_~v~0#1| |ULTIMATE.start_main_~b~0#1|) .cse0 (<= 0 |ULTIMATE.start_main_~c~0#1|) .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 (< .cse12 (+ (div (+ .cse13 2) 2) 1)) .cse7)))))) [2022-07-22 16:03:44,471 INFO L899 garLoopResultBuilder]: For program point L42-3(lines 42 62) no Hoare annotation was computed. [2022-07-22 16:03:44,471 INFO L899 garLoopResultBuilder]: For program point L26(line 26) no Hoare annotation was computed. [2022-07-22 16:03:44,471 INFO L902 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-07-22 16:03:44,471 INFO L899 garLoopResultBuilder]: For program point L22-1(line 22) no Hoare annotation was computed. [2022-07-22 16:03:44,472 INFO L895 garLoopResultBuilder]: At program point L51(line 51) the Hoare annotation is: (let ((.cse2 (* |ULTIMATE.start_main_~r~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse3 (* |ULTIMATE.start_main_~p~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (* |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)) (.cse1 (* |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|))) (and (<= 1 |ULTIMATE.start_main_~y~0#1|) (= (* |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~d~0#1|) |ULTIMATE.start_main_~v~0#1|) (= (+ .cse0 .cse1) |ULTIMATE.start_main_~b~0#1|) (= |ULTIMATE.start_main_~r~0#1| 0) (= |ULTIMATE.start_main_~q~0#1| 0) (<= 1 |ULTIMATE.start_main_~a~0#1|) (= |ULTIMATE.start_main_~k~0#1| 0) (<= |ULTIMATE.start_main_~x~0#1| 1) (<= |ULTIMATE.start_main_~b~0#1| |ULTIMATE.start_main_~c~0#1|) (<= |ULTIMATE.start_main_~a~0#1| |ULTIMATE.start_main_~x~0#1|) (= (+ .cse2 .cse3) |ULTIMATE.start_main_~a~0#1|) (<= |ULTIMATE.start_main_~c~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_main_~s~0#1| 1) (or (<= (* 2 |ULTIMATE.start_main_~v~0#1|) |ULTIMATE.start_main_~c~0#1|) (= (+ .cse2 |ULTIMATE.start_main_~b~0#1| .cse3) (+ (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~q~0#1| |ULTIMATE.start_main_~x~0#1|) (* |ULTIMATE.start_main_~k~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|) .cse0 .cse1 (* |ULTIMATE.start_main_~d~0#1| |ULTIMATE.start_main_~s~0#1| |ULTIMATE.start_main_~y~0#1|)))))) [2022-07-22 16:03:44,472 INFO L899 garLoopResultBuilder]: For program point L43(lines 43 44) no Hoare annotation was computed. [2022-07-22 16:03:44,472 INFO L902 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-07-22 16:03:44,472 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-07-22 16:03:44,472 INFO L899 garLoopResultBuilder]: For program point L8-2(lines 7 9) no Hoare annotation was computed. [2022-07-22 16:03:44,472 INFO L899 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 7 9) no Hoare annotation was computed. [2022-07-22 16:03:44,472 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2022-07-22 16:03:44,472 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2022-07-22 16:03:44,473 INFO L899 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2022-07-22 16:03:44,473 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2022-07-22 16:03:44,473 INFO L899 garLoopResultBuilder]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2022-07-22 16:03:44,473 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-07-22 16:03:44,475 INFO L356 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 16:03:44,476 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 16:03:44,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 04:03:44 BoogieIcfgContainer [2022-07-22 16:03:44,504 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 16:03:44,504 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 16:03:44,505 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 16:03:44,505 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 16:03:44,505 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 04:03:20" (3/4) ... [2022-07-22 16:03:44,507 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-22 16:03:44,511 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2022-07-22 16:03:44,511 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-07-22 16:03:44,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-07-22 16:03:44,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-07-22 16:03:44,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-22 16:03:44,517 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-22 16:03:44,561 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-22 16:03:44,562 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 16:03:44,562 INFO L158 Benchmark]: Toolchain (without parser) took 24472.98ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 73.9MB in the beginning and 61.6MB in the end (delta: 12.3MB). Peak memory consumption was 58.7MB. Max. memory is 16.1GB. [2022-07-22 16:03:44,562 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 16:03:44,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.68ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 78.1MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 16:03:44,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.98ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:03:44,563 INFO L158 Benchmark]: Boogie Preprocessor took 17.39ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 75.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:03:44,564 INFO L158 Benchmark]: RCFGBuilder took 222.25ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 64.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-22 16:03:44,564 INFO L158 Benchmark]: TraceAbstraction took 23952.28ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 64.5MB in the beginning and 64.8MB in the end (delta: -250.7kB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. [2022-07-22 16:03:44,564 INFO L158 Benchmark]: Witness Printer took 57.39ms. Allocated memory is still 151.0MB. Free memory was 64.8MB in the beginning and 61.6MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 16:03:44,567 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 102.8MB. Free memory was 59.4MB in the beginning and 59.4MB in the end (delta: 46.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 182.68ms. Allocated memory is still 102.8MB. Free memory was 73.7MB in the beginning and 78.1MB in the end (delta: -4.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.98ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.39ms. Allocated memory is still 102.8MB. Free memory was 76.5MB in the beginning and 75.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 222.25ms. Allocated memory is still 102.8MB. Free memory was 75.4MB in the beginning and 64.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 23952.28ms. Allocated memory was 102.8MB in the beginning and 151.0MB in the end (delta: 48.2MB). Free memory was 64.5MB in the beginning and 64.8MB in the end (delta: -250.7kB). Peak memory consumption was 77.1MB. Max. memory is 16.1GB. * Witness Printer took 57.39ms. Allocated memory is still 151.0MB. Free memory was 64.8MB in the beginning and 61.6MB 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: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 23.9s, OverallIterations: 12, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 522 SdHoareTripleChecker+Valid, 8.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 487 mSDsluCounter, 2145 SdHoareTripleChecker+Invalid, 7.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1652 mSDsCounter, 570 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3225 IncrementalHoareTripleChecker+Invalid, 3796 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 570 mSolverCounterUnsat, 493 mSDtfsCounter, 3225 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1094 GetRequests, 891 SyntacticMatches, 7 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=163occurred in iteration=10, InterpolantAutomatonStates: 127, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 124 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 123 PreInvPairs, 145 NumberOfFragments, 829 HoareAnnotationTreeSize, 123 FomulaSimplifications, 412 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 15 FomulaSimplificationsInter, 2278 FormulaSimplificationTreeSizeReductionInter, 2.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 577 NumberOfCodeBlocks, 577 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 1031 ConstructedInterpolants, 0 QuantifiedInterpolants, 4085 SizeOfPredicates, 62 NumberOfNonLiveVariables, 1518 ConjunctsInSsa, 185 ConjunctsInUnsatCore, 21 InterpolantComputations, 6 PerfectInterpolantSequences, 1142/1280 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: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((((((((((1 <= y && 1 <= c) && s * y + q * x == b) && r == 0) && q == 0) && 1 <= a) && k == 0) && x <= 1) && y <= 1) && a <= x) && r * y + p * x == a) && c <= x) && s == 1) || (((((((((((((k * q * x + k * s * y + s * y + q * x == r * y + b + p * x && (-1 + -1 * c) / -2 < b + 1) && b * d == v) && v <= b) && s * y + q * x == b) && 0 <= c) && r == 0) && q == 0) && 1 <= a) && x <= 1) && a <= x) && r * y + p * x == a) && (-1 + -1 * c) / -2 < (-1 * c + 2) / 2 + 1) && s == 1) - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: ((((((((((((1 <= y && b * d == v) && s * y + q * x == b) && r == 0) && q == 0) && 1 <= a) && k == 0) && x <= 1) && b <= c) && a <= x) && r * y + p * x == a) && c <= x) && s == 1) && (2 * v <= c || r * y + b + p * x == k * q * x + d * q * x + k * s * y + s * y + q * x + d * s * y) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: ((((((((r * y + p * x == a + s * y + q * x && 1 <= y) && c <= b) && 0 <= c) && x <= 1) && 1 <= x) && 2 * b < 1) && y <= 1) && b < a) || (((((((((s * y + q * x == b && 1 <= b) && r == 0) && q == 0) && 1 <= a) && x <= 1) && y <= 1) && a <= x) && r * y + p * x == a) && s == 1) RESULT: Ultimate proved your program to be correct! [2022-07-22 16:03:44,604 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