./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/psyco/psyco_abp_1-3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf 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/psyco/psyco_abp_1-3.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 0db572bf30caf92f48b0dba5a9cc25cec23b8ac8 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 05:54:49,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 05:54:49,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 05:54:49,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 05:54:49,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 05:54:49,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 05:54:49,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 05:54:49,177 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 05:54:49,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 05:54:49,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 05:54:49,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 05:54:49,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 05:54:49,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 05:54:49,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 05:54:49,192 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 05:54:49,195 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 05:54:49,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 05:54:49,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 05:54:49,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 05:54:49,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 05:54:49,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 05:54:49,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 05:54:49,208 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 05:54:49,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 05:54:49,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 05:54:49,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 05:54:49,215 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 05:54:49,217 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 05:54:49,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 05:54:49,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 05:54:49,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 05:54:49,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 05:54:49,220 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 05:54:49,220 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 05:54:49,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 05:54:49,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 05:54:49,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 05:54:49,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 05:54:49,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 05:54:49,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 05:54:49,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 05:54:49,229 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 05:54:49,265 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 05:54:49,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 05:54:49,267 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 05:54:49,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 05:54:49,269 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 05:54:49,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 05:54:49,269 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 05:54:49,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 05:54:49,270 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 05:54:49,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 05:54:49,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 05:54:49,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 05:54:49,271 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 05:54:49,271 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 05:54:49,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 05:54:49,271 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 05:54:49,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 05:54:49,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 05:54:49,272 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 05:54:49,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 05:54:49,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 05:54:49,279 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 05:54:49,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 05:54:49,280 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 05:54:49,280 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 05:54:49,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 05:54:49,280 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 05:54:49,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 05:54:49,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 05:54:49,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 05:54:49,281 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0db572bf30caf92f48b0dba5a9cc25cec23b8ac8 [2021-08-29 05:54:49,619 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 05:54:49,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 05:54:49,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 05:54:49,647 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 05:54:49,648 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 05:54:49,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-08-29 05:54:49,716 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/138236fee/57da4e028e31476e8a15f8c066d202f9/FLAG71e1e5d8e [2021-08-29 05:54:50,203 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 05:54:50,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2021-08-29 05:54:50,217 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/138236fee/57da4e028e31476e8a15f8c066d202f9/FLAG71e1e5d8e [2021-08-29 05:54:50,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/138236fee/57da4e028e31476e8a15f8c066d202f9 [2021-08-29 05:54:50,696 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 05:54:50,698 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 05:54:50,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 05:54:50,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 05:54:50,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 05:54:50,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:54:50" (1/1) ... [2021-08-29 05:54:50,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@495b113e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:50, skipping insertion in model container [2021-08-29 05:54:50,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:54:50" (1/1) ... [2021-08-29 05:54:50,726 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 05:54:50,755 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 05:54:51,023 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-08-29 05:54:51,030 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 05:54:51,037 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 05:54:51,095 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c[24720,24733] [2021-08-29 05:54:51,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 05:54:51,108 INFO L208 MainTranslator]: Completed translation [2021-08-29 05:54:51,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51 WrapperNode [2021-08-29 05:54:51,109 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 05:54:51,110 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 05:54:51,110 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 05:54:51,110 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 05:54:51,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,128 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,181 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 05:54:51,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 05:54:51,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 05:54:51,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 05:54:51,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,206 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 05:54:51,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 05:54:51,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 05:54:51,235 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 05:54:51,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (1/1) ... [2021-08-29 05:54:51,241 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 05:54:51,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 05:54:51,274 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) [2021-08-29 05:54:51,301 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 [2021-08-29 05:54:51,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 05:54:51,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 05:54:51,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 05:54:51,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 05:54:51,686 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 05:54:51,686 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-08-29 05:54:51,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:54:51 BoogieIcfgContainer [2021-08-29 05:54:51,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 05:54:51,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 05:54:51,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 05:54:51,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 05:54:51,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:54:50" (1/3) ... [2021-08-29 05:54:51,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb01ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:54:51, skipping insertion in model container [2021-08-29 05:54:51,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:54:51" (2/3) ... [2021-08-29 05:54:51,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb01ee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:54:51, skipping insertion in model container [2021-08-29 05:54:51,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:54:51" (3/3) ... [2021-08-29 05:54:51,696 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2021-08-29 05:54:51,701 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 05:54:51,701 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 05:54:51,751 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 05:54:51,760 INFO L339 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, mConcurrency=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 05:54:51,760 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 05:54:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 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) [2021-08-29 05:54:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-29 05:54:51,805 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:51,805 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:51,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2021-08-29 05:54:51,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:51,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67062071] [2021-08-29 05:54:51,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:51,820 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:51,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:51,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:51,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67062071] [2021-08-29 05:54:51,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67062071] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:51,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:51,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-29 05:54:51,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716347850] [2021-08-29 05:54:51,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-29 05:54:51,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:52,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-29 05:54:52,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 05:54:52,013 INFO L87 Difference]: Start difference. First operand has 109 states, 107 states have (on average 1.9532710280373833) internal successors, (209), 108 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-29 05:54:52,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:52,399 INFO L93 Difference]: Finished difference Result 216 states and 416 transitions. [2021-08-29 05:54:52,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-29 05:54:52,406 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-29 05:54:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:52,416 INFO L225 Difference]: With dead ends: 216 [2021-08-29 05:54:52,420 INFO L226 Difference]: Without dead ends: 100 [2021-08-29 05:54:52,427 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.05ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-29 05:54:52,431 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.05ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:52,432 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [5 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 350.05ms Time] [2021-08-29 05:54:52,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-08-29 05:54:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2021-08-29 05:54:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.6666666666666667) internal successors, (165), 99 states have internal predecessors, (165), 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) [2021-08-29 05:54:52,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2021-08-29 05:54:52,483 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2021-08-29 05:54:52,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:52,484 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2021-08-29 05:54:52,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-08-29 05:54:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2021-08-29 05:54:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-08-29 05:54:52,486 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:52,486 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:52,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 05:54:52,487 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:52,488 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2021-08-29 05:54:52,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:52,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056398533] [2021-08-29 05:54:52,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:52,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:52,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:52,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:52,561 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056398533] [2021-08-29 05:54:52,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056398533] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:52,562 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:52,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:52,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810914601] [2021-08-29 05:54:52,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:52,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:52,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:52,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:52,565 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:54:52,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:52,883 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2021-08-29 05:54:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:52,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-08-29 05:54:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:52,889 INFO L225 Difference]: With dead ends: 201 [2021-08-29 05:54:52,890 INFO L226 Difference]: Without dead ends: 103 [2021-08-29 05:54:52,894 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.49ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:52,896 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 219.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.41ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 290.67ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:52,898 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 326 Unknown, 0 Unchecked, 5.41ms Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 290.67ms Time] [2021-08-29 05:54:52,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-08-29 05:54:52,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2021-08-29 05:54:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.6470588235294117) internal successors, (168), 102 states have internal predecessors, (168), 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) [2021-08-29 05:54:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2021-08-29 05:54:52,914 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2021-08-29 05:54:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:52,915 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2021-08-29 05:54:52,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:54:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2021-08-29 05:54:52,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-29 05:54:52,917 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:52,917 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:52,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 05:54:52,919 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:52,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:52,919 INFO L82 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2021-08-29 05:54:52,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:52,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793264632] [2021-08-29 05:54:52,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:52,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:53,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:53,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:53,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793264632] [2021-08-29 05:54:53,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793264632] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:53,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:53,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:53,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109320629] [2021-08-29 05:54:53,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:53,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:53,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:53,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:53,120 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-08-29 05:54:53,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:53,492 INFO L93 Difference]: Finished difference Result 205 states and 334 transitions. [2021-08-29 05:54:53,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:53,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-08-29 05:54:53,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:53,494 INFO L225 Difference]: With dead ends: 205 [2021-08-29 05:54:53,494 INFO L226 Difference]: Without dead ends: 186 [2021-08-29 05:54:53,495 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.86ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:53,495 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 277.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.56ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 349.92ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:53,496 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 353 Unknown, 0 Unchecked, 2.56ms Time], IncrementalHoareTripleChecker [17 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 349.92ms Time] [2021-08-29 05:54:53,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-08-29 05:54:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2021-08-29 05:54:53,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 1.6432748538011697) internal successors, (281), 171 states have internal predecessors, (281), 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) [2021-08-29 05:54:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2021-08-29 05:54:53,508 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2021-08-29 05:54:53,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:53,512 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2021-08-29 05:54:53,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2021-08-29 05:54:53,512 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2021-08-29 05:54:53,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-29 05:54:53,514 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:53,514 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:53,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 05:54:53,514 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:53,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:53,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2021-08-29 05:54:53,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:53,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84507121] [2021-08-29 05:54:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:53,517 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:53,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:53,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:53,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:53,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84507121] [2021-08-29 05:54:53,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84507121] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:53,564 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:53,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:53,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049128583] [2021-08-29 05:54:53,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:53,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:53,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:53,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:53,565 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:54:53,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:53,774 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2021-08-29 05:54:53,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:53,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-08-29 05:54:53,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:53,776 INFO L225 Difference]: With dead ends: 293 [2021-08-29 05:54:53,776 INFO L226 Difference]: Without dead ends: 124 [2021-08-29 05:54:53,777 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:53,778 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 158.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.18ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 199.19ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:53,778 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 303 Unknown, 0 Unchecked, 1.18ms Time], IncrementalHoareTripleChecker [3 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 199.19ms Time] [2021-08-29 05:54:53,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-08-29 05:54:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2021-08-29 05:54:53,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.603305785123967) internal successors, (194), 121 states have internal predecessors, (194), 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) [2021-08-29 05:54:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2021-08-29 05:54:53,784 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2021-08-29 05:54:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:53,784 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2021-08-29 05:54:53,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:54:53,785 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2021-08-29 05:54:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-08-29 05:54:53,785 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:53,785 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:53,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 05:54:53,786 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:53,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:53,786 INFO L82 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2021-08-29 05:54:53,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:53,787 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082445947] [2021-08-29 05:54:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:53,787 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 05:54:53,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:53,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082445947] [2021-08-29 05:54:53,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082445947] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:53,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:53,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:53,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581138341] [2021-08-29 05:54:53,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:53,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:53,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:53,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:53,836 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-08-29 05:54:53,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:53,978 INFO L93 Difference]: Finished difference Result 226 states and 358 transitions. [2021-08-29 05:54:53,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:53,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-08-29 05:54:53,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:53,980 INFO L225 Difference]: With dead ends: 226 [2021-08-29 05:54:53,980 INFO L226 Difference]: Without dead ends: 107 [2021-08-29 05:54:53,981 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:53,981 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 94 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 135.58ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:53,982 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 0 Invalid, 184 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 135.58ms Time] [2021-08-29 05:54:53,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-08-29 05:54:53,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2021-08-29 05:54:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.5673076923076923) internal successors, (163), 104 states have internal predecessors, (163), 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) [2021-08-29 05:54:53,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2021-08-29 05:54:53,987 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 21 [2021-08-29 05:54:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:53,987 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2021-08-29 05:54:53,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-08-29 05:54:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2021-08-29 05:54:53,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-29 05:54:53,988 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:53,988 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:53,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 05:54:53,989 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:53,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:53,989 INFO L82 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2021-08-29 05:54:53,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:53,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517367482] [2021-08-29 05:54:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:53,990 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:54,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:54,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517367482] [2021-08-29 05:54:54,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517367482] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 05:54:54,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402054165] [2021-08-29 05:54:54,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:54,169 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 05:54:54,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 05:54:54,170 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) [2021-08-29 05:54:54,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-29 05:54:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:54,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 05:54:54,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 05:54:54,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:54,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 05:54:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:54,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402054165] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 05:54:54,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 05:54:54,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2021-08-29 05:54:54,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805274122] [2021-08-29 05:54:54,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-29 05:54:54,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:54,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-29 05:54:54,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-08-29 05:54:54,478 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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) [2021-08-29 05:54:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:55,619 INFO L93 Difference]: Finished difference Result 359 states and 564 transitions. [2021-08-29 05:54:55,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 05:54:55,620 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-08-29 05:54:55,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:55,622 INFO L225 Difference]: With dead ends: 359 [2021-08-29 05:54:55,622 INFO L226 Difference]: Without dead ends: 319 [2021-08-29 05:54:55,622 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 104.97ms TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-08-29 05:54:55,623 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 714 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 827.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.44ms SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1018.17ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:55,624 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 0 Invalid, 1622 Unknown, 0 Unchecked, 9.44ms Time], IncrementalHoareTripleChecker [97 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1018.17ms Time] [2021-08-29 05:54:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-08-29 05:54:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 275. [2021-08-29 05:54:55,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.583941605839416) internal successors, (434), 274 states have internal predecessors, (434), 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) [2021-08-29 05:54:55,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 434 transitions. [2021-08-29 05:54:55,644 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 434 transitions. Word has length 23 [2021-08-29 05:54:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:55,645 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 434 transitions. [2021-08-29 05:54:55,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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) [2021-08-29 05:54:55,645 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 434 transitions. [2021-08-29 05:54:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-08-29 05:54:55,646 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:55,646 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:55,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-29 05:54:55,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-08-29 05:54:55,870 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:55,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1800121285, now seen corresponding path program 1 times [2021-08-29 05:54:55,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:55,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709297239] [2021-08-29 05:54:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:55,871 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-29 05:54:55,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:55,925 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709297239] [2021-08-29 05:54:55,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709297239] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:55,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:55,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:55,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232008289] [2021-08-29 05:54:55,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:55,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:55,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:55,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:55,928 INFO L87 Difference]: Start difference. First operand 275 states and 434 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-29 05:54:56,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:56,082 INFO L93 Difference]: Finished difference Result 548 states and 861 transitions. [2021-08-29 05:54:56,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:56,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-08-29 05:54:56,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:56,084 INFO L225 Difference]: With dead ends: 548 [2021-08-29 05:54:56,084 INFO L226 Difference]: Without dead ends: 297 [2021-08-29 05:54:56,085 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:56,085 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 30 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.00ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 138.50ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:56,086 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 0 Invalid, 245 Unknown, 0 Unchecked, 1.00ms Time], IncrementalHoareTripleChecker [1 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 138.50ms Time] [2021-08-29 05:54:56,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2021-08-29 05:54:56,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2021-08-29 05:54:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.5442176870748299) internal successors, (454), 294 states have internal predecessors, (454), 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) [2021-08-29 05:54:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 454 transitions. [2021-08-29 05:54:56,098 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 454 transitions. Word has length 25 [2021-08-29 05:54:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:56,098 INFO L470 AbstractCegarLoop]: Abstraction has 295 states and 454 transitions. [2021-08-29 05:54:56,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-08-29 05:54:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 454 transitions. [2021-08-29 05:54:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-29 05:54:56,099 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:56,099 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:56,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 05:54:56,099 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:56,100 INFO L82 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2021-08-29 05:54:56,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:56,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303238943] [2021-08-29 05:54:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:56,100 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:56,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:56,200 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303238943] [2021-08-29 05:54:56,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303238943] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 05:54:56,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227344940] [2021-08-29 05:54:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:56,201 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 05:54:56,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 05:54:56,208 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) [2021-08-29 05:54:56,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-29 05:54:56,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:56,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 8 conjunts are in the unsatisfiable core [2021-08-29 05:54:56,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 05:54:56,439 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-29 05:54:56,440 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-29 05:54:56,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227344940] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:56,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-29 05:54:56,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2021-08-29 05:54:56,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612426100] [2021-08-29 05:54:56,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:56,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:56,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:56,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 05:54:56,442 INFO L87 Difference]: Start difference. First operand 295 states and 454 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-08-29 05:54:56,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:56,572 INFO L93 Difference]: Finished difference Result 298 states and 456 transitions. [2021-08-29 05:54:56,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:56,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-08-29 05:54:56,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:56,575 INFO L225 Difference]: With dead ends: 298 [2021-08-29 05:54:56,575 INFO L226 Difference]: Without dead ends: 292 [2021-08-29 05:54:56,575 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.52ms TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-29 05:54:56,576 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 119 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.42ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 120.97ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:56,576 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 0 Invalid, 140 Unknown, 0 Unchecked, 0.42ms Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 120.97ms Time] [2021-08-29 05:54:56,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-08-29 05:54:56,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 291. [2021-08-29 05:54:56,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.5241379310344827) internal successors, (442), 290 states have internal predecessors, (442), 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) [2021-08-29 05:54:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 442 transitions. [2021-08-29 05:54:56,590 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 442 transitions. Word has length 27 [2021-08-29 05:54:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:56,590 INFO L470 AbstractCegarLoop]: Abstraction has 291 states and 442 transitions. [2021-08-29 05:54:56,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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) [2021-08-29 05:54:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 442 transitions. [2021-08-29 05:54:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-29 05:54:56,592 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:56,592 INFO L513 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 05:54:56,619 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-29 05:54:56,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-08-29 05:54:56,810 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:56,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:56,811 INFO L82 PathProgramCache]: Analyzing trace with hash -917092134, now seen corresponding path program 1 times [2021-08-29 05:54:56,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:56,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309609785] [2021-08-29 05:54:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:56,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:56,872 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-29 05:54:56,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:56,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309609785] [2021-08-29 05:54:56,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309609785] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:56,872 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:56,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:56,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745755440] [2021-08-29 05:54:56,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:56,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:56,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:56,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:56,874 INFO L87 Difference]: Start difference. First operand 291 states and 442 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-08-29 05:54:57,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:57,016 INFO L93 Difference]: Finished difference Result 510 states and 775 transitions. [2021-08-29 05:54:57,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:57,017 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-08-29 05:54:57,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:57,018 INFO L225 Difference]: With dead ends: 510 [2021-08-29 05:54:57,018 INFO L226 Difference]: Without dead ends: 243 [2021-08-29 05:54:57,019 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.47ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:57,019 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.54ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.81ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:57,020 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 203 Unknown, 0 Unchecked, 0.54ms Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 131.81ms Time] [2021-08-29 05:54:57,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-08-29 05:54:57,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 241. [2021-08-29 05:54:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 240 states have (on average 1.5041666666666667) internal successors, (361), 240 states have internal predecessors, (361), 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) [2021-08-29 05:54:57,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 361 transitions. [2021-08-29 05:54:57,027 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 361 transitions. Word has length 33 [2021-08-29 05:54:57,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:57,028 INFO L470 AbstractCegarLoop]: Abstraction has 241 states and 361 transitions. [2021-08-29 05:54:57,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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) [2021-08-29 05:54:57,028 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 361 transitions. [2021-08-29 05:54:57,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-08-29 05:54:57,029 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:57,029 INFO L513 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-08-29 05:54:57,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 05:54:57,029 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:57,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:57,030 INFO L82 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2021-08-29 05:54:57,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:57,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193359193] [2021-08-29 05:54:57,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:57,031 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-08-29 05:54:57,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:57,060 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193359193] [2021-08-29 05:54:57,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193359193] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:57,060 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:57,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:57,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234467907] [2021-08-29 05:54:57,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:57,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:57,062 INFO L87 Difference]: Start difference. First operand 241 states and 361 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-08-29 05:54:57,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:57,213 INFO L93 Difference]: Finished difference Result 424 states and 632 transitions. [2021-08-29 05:54:57,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:57,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-08-29 05:54:57,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:57,215 INFO L225 Difference]: With dead ends: 424 [2021-08-29 05:54:57,215 INFO L226 Difference]: Without dead ends: 225 [2021-08-29 05:54:57,215 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.44ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:57,216 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.76ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.55ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 141.09ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:57,217 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 233 Unknown, 0 Unchecked, 0.55ms Time], IncrementalHoareTripleChecker [1 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 141.09ms Time] [2021-08-29 05:54:57,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-08-29 05:54:57,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2021-08-29 05:54:57,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.4594594594594594) internal successors, (324), 222 states have internal predecessors, (324), 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) [2021-08-29 05:54:57,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 324 transitions. [2021-08-29 05:54:57,225 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 324 transitions. Word has length 37 [2021-08-29 05:54:57,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:57,227 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 324 transitions. [2021-08-29 05:54:57,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 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) [2021-08-29 05:54:57,227 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 324 transitions. [2021-08-29 05:54:57,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-08-29 05:54:57,231 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:57,231 INFO L513 BasicCegarLoop]: trace histogram [5, 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] [2021-08-29 05:54:57,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 05:54:57,231 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:57,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:57,232 INFO L82 PathProgramCache]: Analyzing trace with hash -140510671, now seen corresponding path program 1 times [2021-08-29 05:54:57,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:57,232 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213601407] [2021-08-29 05:54:57,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:57,233 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:57,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:57,294 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-08-29 05:54:57,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:57,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213601407] [2021-08-29 05:54:57,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213601407] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 05:54:57,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 05:54:57,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 05:54:57,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728644351] [2021-08-29 05:54:57,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 05:54:57,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:57,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 05:54:57,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:57,297 INFO L87 Difference]: Start difference. First operand 223 states and 324 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:54:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:57,428 INFO L93 Difference]: Finished difference Result 305 states and 442 transitions. [2021-08-29 05:54:57,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 05:54:57,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2021-08-29 05:54:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:57,430 INFO L225 Difference]: With dead ends: 305 [2021-08-29 05:54:57,430 INFO L226 Difference]: Without dead ends: 143 [2021-08-29 05:54:57,430 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.55ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 05:54:57,431 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 27 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.16ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:57,431 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 0 Invalid, 204 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 123.16ms Time] [2021-08-29 05:54:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-08-29 05:54:57,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2021-08-29 05:54:57,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.4214285714285715) internal successors, (199), 140 states have internal predecessors, (199), 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) [2021-08-29 05:54:57,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2021-08-29 05:54:57,435 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2021-08-29 05:54:57,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:57,436 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2021-08-29 05:54:57,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-29 05:54:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2021-08-29 05:54:57,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-08-29 05:54:57,436 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 05:54:57,436 INFO L513 BasicCegarLoop]: trace histogram [5, 4, 3, 3, 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] [2021-08-29 05:54:57,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 05:54:57,438 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 05:54:57,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 05:54:57,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1014660280, now seen corresponding path program 1 times [2021-08-29 05:54:57,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 05:54:57,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654180555] [2021-08-29 05:54:57,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:57,439 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 05:54:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:57,558 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-08-29 05:54:57,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 05:54:57,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654180555] [2021-08-29 05:54:57,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654180555] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-29 05:54:57,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945683195] [2021-08-29 05:54:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 05:54:57,559 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 05:54:57,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 05:54:57,560 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) [2021-08-29 05:54:57,561 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-29 05:54:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 05:54:57,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 21 conjunts are in the unsatisfiable core [2021-08-29 05:54:57,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 05:54:57,928 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:57,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 05:54:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 05:54:58,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945683195] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-29 05:54:58,227 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-29 05:54:58,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2021-08-29 05:54:58,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424890587] [2021-08-29 05:54:58,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-29 05:54:58,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 05:54:58,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-29 05:54:58,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2021-08-29 05:54:58,229 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 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) [2021-08-29 05:54:58,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 05:54:58,703 INFO L93 Difference]: Finished difference Result 163 states and 231 transitions. [2021-08-29 05:54:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-29 05:54:58,703 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2021-08-29 05:54:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 05:54:58,704 INFO L225 Difference]: With dead ends: 163 [2021-08-29 05:54:58,704 INFO L226 Difference]: Without dead ends: 0 [2021-08-29 05:54:58,704 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 164.29ms TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2021-08-29 05:54:58,705 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 426 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 301.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.87ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.38ms IncrementalHoareTripleChecker+Time [2021-08-29 05:54:58,705 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 0 Invalid, 631 Unknown, 0 Unchecked, 3.87ms Time], IncrementalHoareTripleChecker [31 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 376.38ms Time] [2021-08-29 05:54:58,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-29 05:54:58,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-29 05:54:58,706 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) [2021-08-29 05:54:58,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-29 05:54:58,706 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 47 [2021-08-29 05:54:58,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 05:54:58,706 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-29 05:54:58,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 14 states have internal predecessors, (121), 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) [2021-08-29 05:54:58,706 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-29 05:54:58,707 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-29 05:54:58,709 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 05:54:58,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-29 05:54:58,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-29 05:54:58,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-29 05:54:58,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:54:58,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:54:58,964 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:54:58,970 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L432(lines 432 434) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L300(lines 300 302) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L168(lines 168 170) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L532(lines 532 534) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L400(lines 400 402) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L268(lines 268 270) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L500(lines 500 502) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L368(lines 368 370) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L468(lines 468 470) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 60) no Hoare annotation was computed. [2021-08-29 05:54:59,130 INFO L858 garLoopResultBuilder]: For program point L42(lines 42 57) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L142(lines 142 157) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L242(lines 242 257) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L110(lines 110 125) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 55) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L342(lines 342 357) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L210(lines 210 225) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L144(lines 144 155) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L78(lines 78 93) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L442(lines 442 457) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L310(lines 310 325) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L244(lines 244 255) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L178(lines 178 193) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L112(lines 112 123) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L542(lines 542 557) no Hoare annotation was computed. [2021-08-29 05:54:59,131 INFO L858 garLoopResultBuilder]: For program point L410(lines 410 425) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L344(lines 344 355) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L278(lines 278 293) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L212(lines 212 223) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L80(lines 80 91) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L510(lines 510 525) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L444(lines 444 455) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L378(lines 378 393) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L312(lines 312 323) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L180(lines 180 191) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 50) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L544(lines 544 555) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L478(lines 478 493) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-08-29 05:54:59,132 INFO L858 garLoopResultBuilder]: For program point L280(lines 280 291) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L148(lines 148 150) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L861 garLoopResultBuilder]: At program point L16(lines 16 568) the Hoare annotation is: true [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L512(lines 512 523) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L380(lines 380 391) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L248(lines 248 250) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L116(lines 116 118) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L480(lines 480 491) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L348(lines 348 350) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L216(lines 216 218) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L84(lines 84 86) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L448(lines 448 450) no Hoare annotation was computed. [2021-08-29 05:54:59,133 INFO L858 garLoopResultBuilder]: For program point L316(lines 316 318) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L184(lines 184 186) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L548(lines 548 550) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L416(lines 416 418) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L284(lines 284 286) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L854 garLoopResultBuilder]: At program point L549(lines 16 568) the Hoare annotation is: false [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L516(lines 516 518) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L384(lines 384 386) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L484(lines 484 486) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-29 05:54:59,134 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 563) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648)) (<= 5 ULTIMATE.start_main_~q~0) .cse0 (<= ULTIMATE.start_main_~this_expect~0 (+ 2 (* 2 (div (+ (- 2) ULTIMATE.start_main_~this_expect~0) 2)))) (<= ULTIMATE.start_main_~P8~0 2147483647)) (and .cse0 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)))) [2021-08-29 05:54:59,134 INFO L858 garLoopResultBuilder]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2021-08-29 05:54:59,138 INFO L858 garLoopResultBuilder]: For program point L126(lines 126 141) no Hoare annotation was computed. [2021-08-29 05:54:59,138 INFO L858 garLoopResultBuilder]: For program point L226(lines 226 241) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point L94(lines 94 109) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point L61(lines 61 160) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point L326(lines 326 341) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point L194(lines 194 209) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point L161(lines 161 260) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point L128(lines 128 139) no Hoare annotation was computed. [2021-08-29 05:54:59,139 INFO L858 garLoopResultBuilder]: For program point L62(lines 62 77) no Hoare annotation was computed. [2021-08-29 05:54:59,140 INFO L858 garLoopResultBuilder]: For program point L426(lines 426 441) no Hoare annotation was computed. [2021-08-29 05:54:59,140 INFO L858 garLoopResultBuilder]: For program point L294(lines 294 309) no Hoare annotation was computed. [2021-08-29 05:54:59,140 INFO L858 garLoopResultBuilder]: For program point L261(lines 261 360) no Hoare annotation was computed. [2021-08-29 05:54:59,140 INFO L858 garLoopResultBuilder]: For program point L228(lines 228 239) no Hoare annotation was computed. [2021-08-29 05:54:59,140 INFO L858 garLoopResultBuilder]: For program point L162(lines 162 177) no Hoare annotation was computed. [2021-08-29 05:54:59,140 INFO L858 garLoopResultBuilder]: For program point L96(lines 96 107) no Hoare annotation was computed. [2021-08-29 05:54:59,141 INFO L854 garLoopResultBuilder]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse2 (= ULTIMATE.start_main_~this_buffer_empty~0 1)) (.cse0 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ (- 1) ULTIMATE.start_main_~this_expect~0) 2)) 1))) (.cse1 (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648))) (.cse4 (<= ULTIMATE.start_main_~this_expect~0 (+ 2 (* 2 (div (+ (- 2) ULTIMATE.start_main_~this_expect~0) 2))))) (.cse3 (<= ULTIMATE.start_main_~P8~0 2147483647)) (.cse5 (= ULTIMATE.start_main_~this_buffer_empty~0 0))) (or (and .cse0 (= ULTIMATE.start_main_~q~0 4) .cse1 .cse2 .cse3) (and .cse1 .cse2 .cse4 .cse3 (= ULTIMATE.start_main_~q~0 1)) (and .cse0 .cse1 .cse5 .cse3 (= ULTIMATE.start_main_~q~0 3)) (and .cse1 (<= 5 ULTIMATE.start_main_~q~0) .cse5 .cse4 .cse3) (and .cse5 (= ULTIMATE.start_main_~q~0 0) (= ULTIMATE.start_main_~this_expect~0 0)))) [2021-08-29 05:54:59,141 INFO L858 garLoopResultBuilder]: For program point L526(lines 526 541) no Hoare annotation was computed. [2021-08-29 05:54:59,141 INFO L858 garLoopResultBuilder]: For program point L394(lines 394 409) no Hoare annotation was computed. [2021-08-29 05:54:59,141 INFO L858 garLoopResultBuilder]: For program point L361(lines 361 460) no Hoare annotation was computed. [2021-08-29 05:54:59,141 INFO L858 garLoopResultBuilder]: For program point L328(lines 328 339) no Hoare annotation was computed. [2021-08-29 05:54:59,141 INFO L858 garLoopResultBuilder]: For program point L262(lines 262 277) no Hoare annotation was computed. [2021-08-29 05:54:59,141 INFO L858 garLoopResultBuilder]: For program point L196(lines 196 207) no Hoare annotation was computed. [2021-08-29 05:54:59,142 INFO L858 garLoopResultBuilder]: For program point L64(lines 64 75) no Hoare annotation was computed. [2021-08-29 05:54:59,142 INFO L858 garLoopResultBuilder]: For program point L494(lines 494 509) no Hoare annotation was computed. [2021-08-29 05:54:59,142 INFO L858 garLoopResultBuilder]: For program point L461(lines 461 560) no Hoare annotation was computed. [2021-08-29 05:54:59,142 INFO L858 garLoopResultBuilder]: For program point L428(lines 428 439) no Hoare annotation was computed. [2021-08-29 05:54:59,142 INFO L858 garLoopResultBuilder]: For program point L362(lines 362 377) no Hoare annotation was computed. [2021-08-29 05:54:59,142 INFO L858 garLoopResultBuilder]: For program point L296(lines 296 307) no Hoare annotation was computed. [2021-08-29 05:54:59,142 INFO L858 garLoopResultBuilder]: For program point L164(lines 164 175) no Hoare annotation was computed. [2021-08-29 05:54:59,143 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-29 05:54:59,143 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 567) no Hoare annotation was computed. [2021-08-29 05:54:59,143 INFO L858 garLoopResultBuilder]: For program point L528(lines 528 539) no Hoare annotation was computed. [2021-08-29 05:54:59,143 INFO L858 garLoopResultBuilder]: For program point L462(lines 462 477) no Hoare annotation was computed. [2021-08-29 05:54:59,143 INFO L858 garLoopResultBuilder]: For program point L396(lines 396 407) no Hoare annotation was computed. [2021-08-29 05:54:59,143 INFO L858 garLoopResultBuilder]: For program point L264(lines 264 275) no Hoare annotation was computed. [2021-08-29 05:54:59,143 INFO L858 garLoopResultBuilder]: For program point L132(lines 132 134) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L496(lines 496 507) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L364(lines 364 375) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L232(lines 232 234) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L100(lines 100 102) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L464(lines 464 475) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L332(lines 332 334) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L200(lines 200 202) no Hoare annotation was computed. [2021-08-29 05:54:59,144 INFO L858 garLoopResultBuilder]: For program point L68(lines 68 70) no Hoare annotation was computed. [2021-08-29 05:54:59,148 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 05:54:59,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 05:54:59 BoogieIcfgContainer [2021-08-29 05:54:59,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 05:54:59,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 05:54:59,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 05:54:59,163 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 05:54:59,163 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:54:51" (3/4) ... [2021-08-29 05:54:59,166 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-29 05:54:59,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-29 05:54:59,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-08-29 05:54:59,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 05:54:59,177 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-29 05:54:59,199 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 05:54:59,199 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 05:54:59,200 INFO L158 Benchmark]: Toolchain (without parser) took 8502.02ms. Allocated memory was 60.8MB in the beginning and 88.1MB in the end (delta: 27.3MB). Free memory was 39.6MB in the beginning and 60.7MB in the end (delta: -21.1MB). Peak memory consumption was 5.0MB. Max. memory is 16.1GB. [2021-08-29 05:54:59,200 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 05:54:59,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.25ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 36.3MB in the end (delta: 3.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-29 05:54:59,201 INFO L158 Benchmark]: Boogie Procedure Inliner took 70.90ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 31.2MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 05:54:59,201 INFO L158 Benchmark]: Boogie Preprocessor took 51.88ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 28.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 05:54:59,201 INFO L158 Benchmark]: RCFGBuilder took 453.69ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.4MB in the beginning and 35.8MB in the end (delta: -7.4MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. [2021-08-29 05:54:59,202 INFO L158 Benchmark]: TraceAbstraction took 7472.62ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 63.5MB in the end (delta: -28.1MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. [2021-08-29 05:54:59,202 INFO L158 Benchmark]: Witness Printer took 36.79ms. Allocated memory is still 88.1MB. Free memory was 63.5MB in the beginning and 60.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-29 05:54:59,204 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory was 42.4MB in the beginning and 42.3MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.25ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 36.3MB in the end (delta: 3.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 70.90ms. Allocated memory is still 60.8MB. Free memory was 36.3MB in the beginning and 31.2MB in the end (delta: 5.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.88ms. Allocated memory is still 60.8MB. Free memory was 31.2MB in the beginning and 28.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 453.69ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 28.4MB in the beginning and 35.8MB in the end (delta: -7.4MB). Peak memory consumption was 14.2MB. Max. memory is 16.1GB. * TraceAbstraction took 7472.62ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 35.5MB in the beginning and 63.5MB in the end (delta: -28.1MB). Peak memory consumption was 25.8MB. Max. memory is 16.1GB. * Witness Printer took 36.79ms. Allocated memory is still 88.1MB. Free memory was 63.5MB in the beginning and 60.7MB in the end (delta: 2.9MB). 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, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 567]: 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 1 procedures, 109 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7398.33ms, OverallIterations: 12, TraceHistogramMax: 5, EmptinessCheckTime: 42.71ms, AutomataDifference: 3888.87ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 216.12ms, InitialAbstractionConstructionTime: 14.25ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1666 SdHoareTripleChecker+Valid, 3375.49ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1666 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2639.83ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2238 mSDsCounter, 164 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4484 IncrementalHoareTripleChecker+Invalid, 4648 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 164 mSolverCounterUnsat, 0 mSDtfsCounter, 4484 mSolverCounterSat, 27.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 304.51ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=295occurred in iteration=7, InterpolantAutomatonStates: 51, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 137.83ms AutomataMinimizationTime, 12 MinimizatonAttempts, 71 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 154 HoareAnnotationTreeSize, 4 FomulaSimplifications, 287 FormulaSimplificationTreeSizeReduction, 55.18ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 209 FormulaSimplificationTreeSizeReductionInter, 154.60ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 74.58ms SsaConstructionTime, 446.44ms SatisfiabilityAnalysisTime, 1603.46ms InterpolantComputationTime, 406 NumberOfCodeBlocks, 406 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 459 ConstructedInterpolants, 0 QuantifiedInterpolants, 2495 SizeOfPredicates, 9 NumberOfNonLiveVariables, 779 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 17 InterpolantComputations, 10 PerfectInterpolantSequences, 146/228 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: 16]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((this_expect <= 2 * ((-1 + this_expect) / 2) + 1 && q == 4) && 0 <= P8 + 2147483648) && this_buffer_empty == 1) && P8 <= 2147483647) || ((((0 <= P8 + 2147483648 && this_buffer_empty == 1) && this_expect <= 2 + 2 * ((-2 + this_expect) / 2)) && P8 <= 2147483647) && q == 1)) || ((((this_expect <= 2 * ((-1 + this_expect) / 2) + 1 && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 <= 2147483647) && q == 3)) || ((((0 <= P8 + 2147483648 && 5 <= q) && this_buffer_empty == 0) && this_expect <= 2 + 2 * ((-2 + this_expect) / 2)) && P8 <= 2147483647)) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0) - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: ((((0 <= P8 + 2147483648 && 5 <= q) && this_buffer_empty == 0) && this_expect <= 2 + 2 * ((-2 + this_expect) / 2)) && P8 <= 2147483647) || ((this_buffer_empty == 0 && q == 0) && this_expect == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-08-29 05:54:59,241 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...