./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 54858612 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 0.2.0-5485861 [2020-10-25 21:18:39,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 21:18:39,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 21:18:39,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 21:18:39,187 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 21:18:39,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 21:18:39,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 21:18:39,205 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 21:18:39,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 21:18:39,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 21:18:39,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 21:18:39,224 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 21:18:39,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 21:18:39,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 21:18:39,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 21:18:39,234 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 21:18:39,235 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 21:18:39,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 21:18:39,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 21:18:39,253 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 21:18:39,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 21:18:39,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 21:18:39,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 21:18:39,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 21:18:39,272 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 21:18:39,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 21:18:39,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 21:18:39,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 21:18:39,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 21:18:39,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 21:18:39,280 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 21:18:39,281 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 21:18:39,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 21:18:39,285 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 21:18:39,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 21:18:39,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 21:18:39,289 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 21:18:39,289 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 21:18:39,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 21:18:39,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 21:18:39,294 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 21:18:39,295 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 21:18:39,357 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 21:18:39,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 21:18:39,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 21:18:39,363 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 21:18:39,363 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 21:18:39,364 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 21:18:39,364 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 21:18:39,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 21:18:39,365 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 21:18:39,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 21:18:39,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 21:18:39,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 21:18:39,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 21:18:39,368 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 21:18:39,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 21:18:39,369 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 21:18:39,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 21:18:39,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 21:18:39,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 21:18:39,370 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 21:18:39,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 21:18:39,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:18:39,372 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 21:18:39,372 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 21:18:39,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 21:18:39,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 21:18:39,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 21:18:39,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 21:18:39,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 21:18:39,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0db572bf30caf92f48b0dba5a9cc25cec23b8ac8 [2020-10-25 21:18:39,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 21:18:39,931 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 21:18:39,937 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 21:18:39,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 21:18:39,940 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 21:18:39,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/psyco/psyco_abp_1-3.c [2020-10-25 21:18:40,067 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97d9c7d6/b08285d1a5e741e7aa010c9dbfc81019/FLAGa452f064b [2020-10-25 21:18:40,700 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 21:18:40,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/psyco/psyco_abp_1-3.c [2020-10-25 21:18:40,725 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97d9c7d6/b08285d1a5e741e7aa010c9dbfc81019/FLAGa452f064b [2020-10-25 21:18:41,032 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d97d9c7d6/b08285d1a5e741e7aa010c9dbfc81019 [2020-10-25 21:18:41,037 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 21:18:41,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 21:18:41,050 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 21:18:41,050 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 21:18:41,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 21:18:41,056 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d42c9ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41, skipping insertion in model container [2020-10-25 21:18:41,061 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 21:18:41,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 21:18:41,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:18:41,523 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 21:18:41,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 21:18:41,633 INFO L208 MainTranslator]: Completed translation [2020-10-25 21:18:41,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41 WrapperNode [2020-10-25 21:18:41,633 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 21:18:41,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 21:18:41,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 21:18:41,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 21:18:41,645 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,679 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,772 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 21:18:41,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 21:18:41,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 21:18:41,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 21:18:41,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... [2020-10-25 21:18:41,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 21:18:41,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 21:18:41,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 21:18:41,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 21:18:41,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 21:18:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 21:18:41,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 21:18:41,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 21:18:41,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 21:18:42,966 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 21:18:42,967 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-25 21:18:42,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:18:42 BoogieIcfgContainer [2020-10-25 21:18:42,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 21:18:42,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 21:18:42,971 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 21:18:42,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 21:18:42,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 09:18:41" (1/3) ... [2020-10-25 21:18:42,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b544ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:18:42, skipping insertion in model container [2020-10-25 21:18:42,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 09:18:41" (2/3) ... [2020-10-25 21:18:42,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b544ea6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 09:18:42, skipping insertion in model container [2020-10-25 21:18:42,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:18:42" (3/3) ... [2020-10-25 21:18:42,979 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-3.c [2020-10-25 21:18:42,991 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 21:18:42,996 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 21:18:43,010 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 21:18:43,038 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 21:18:43,038 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 21:18:43,038 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 21:18:43,039 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 21:18:43,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 21:18:43,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 21:18:43,039 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 21:18:43,040 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 21:18:43,058 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-10-25 21:18:43,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-25 21:18:43,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:43,066 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:43,066 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:43,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:43,073 INFO L82 PathProgramCache]: Analyzing trace with hash 352571511, now seen corresponding path program 1 times [2020-10-25 21:18:43,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:43,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484904408] [2020-10-25 21:18:43,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:43,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:43,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:43,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484904408] [2020-10-25 21:18:43,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:43,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-25 21:18:43,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098162756] [2020-10-25 21:18:43,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-25 21:18:43,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:43,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-25 21:18:43,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:18:43,271 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2020-10-25 21:18:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:43,314 INFO L93 Difference]: Finished difference Result 217 states and 417 transitions. [2020-10-25 21:18:43,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-25 21:18:43,316 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-10-25 21:18:43,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:43,340 INFO L225 Difference]: With dead ends: 217 [2020-10-25 21:18:43,340 INFO L226 Difference]: Without dead ends: 100 [2020-10-25 21:18:43,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-25 21:18:43,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-25 21:18:43,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-10-25 21:18:43,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-25 21:18:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 165 transitions. [2020-10-25 21:18:43,388 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 165 transitions. Word has length 9 [2020-10-25 21:18:43,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:43,388 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 165 transitions. [2020-10-25 21:18:43,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-25 21:18:43,388 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 165 transitions. [2020-10-25 21:18:43,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-25 21:18:43,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:43,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:43,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 21:18:43,390 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:43,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:43,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1422697561, now seen corresponding path program 1 times [2020-10-25 21:18:43,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:43,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875065283] [2020-10-25 21:18:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:43,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875065283] [2020-10-25 21:18:43,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:43,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:43,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796010626] [2020-10-25 21:18:43,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:43,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:43,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:43,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:43,501 INFO L87 Difference]: Start difference. First operand 100 states and 165 transitions. Second operand 3 states. [2020-10-25 21:18:43,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:43,562 INFO L93 Difference]: Finished difference Result 201 states and 332 transitions. [2020-10-25 21:18:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:43,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-25 21:18:43,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:43,564 INFO L225 Difference]: With dead ends: 201 [2020-10-25 21:18:43,564 INFO L226 Difference]: Without dead ends: 103 [2020-10-25 21:18:43,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:43,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-25 21:18:43,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2020-10-25 21:18:43,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-25 21:18:43,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 168 transitions. [2020-10-25 21:18:43,578 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 168 transitions. Word has length 10 [2020-10-25 21:18:43,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:43,578 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 168 transitions. [2020-10-25 21:18:43,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:43,578 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 168 transitions. [2020-10-25 21:18:43,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 21:18:43,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:43,581 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:43,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 21:18:43,582 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:43,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:43,584 INFO L82 PathProgramCache]: Analyzing trace with hash 658032730, now seen corresponding path program 1 times [2020-10-25 21:18:43,585 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:43,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199722240] [2020-10-25 21:18:43,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:43,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:43,743 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199722240] [2020-10-25 21:18:43,743 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:43,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:43,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835287652] [2020-10-25 21:18:43,744 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:43,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:43,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:43,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:43,746 INFO L87 Difference]: Start difference. First operand 103 states and 168 transitions. Second operand 3 states. [2020-10-25 21:18:43,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:43,917 INFO L93 Difference]: Finished difference Result 205 states and 334 transitions. [2020-10-25 21:18:43,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:43,918 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 21:18:43,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:43,921 INFO L225 Difference]: With dead ends: 205 [2020-10-25 21:18:43,922 INFO L226 Difference]: Without dead ends: 186 [2020-10-25 21:18:43,923 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:43,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-25 21:18:43,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 172. [2020-10-25 21:18:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-25 21:18:43,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 281 transitions. [2020-10-25 21:18:43,944 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 281 transitions. Word has length 15 [2020-10-25 21:18:43,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:43,944 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 281 transitions. [2020-10-25 21:18:43,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:43,944 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 281 transitions. [2020-10-25 21:18:43,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 21:18:43,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:43,945 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:43,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 21:18:43,946 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:43,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:43,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1675425412, now seen corresponding path program 1 times [2020-10-25 21:18:43,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:43,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548936427] [2020-10-25 21:18:43,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:43,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:44,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:44,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548936427] [2020-10-25 21:18:44,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:44,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:44,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049978689] [2020-10-25 21:18:44,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:44,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:44,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:44,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:44,049 INFO L87 Difference]: Start difference. First operand 172 states and 281 transitions. Second operand 3 states. [2020-10-25 21:18:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:44,154 INFO L93 Difference]: Finished difference Result 293 states and 477 transitions. [2020-10-25 21:18:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:44,154 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 21:18:44,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:44,156 INFO L225 Difference]: With dead ends: 293 [2020-10-25 21:18:44,157 INFO L226 Difference]: Without dead ends: 124 [2020-10-25 21:18:44,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:44,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-25 21:18:44,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-10-25 21:18:44,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-25 21:18:44,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 194 transitions. [2020-10-25 21:18:44,171 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 194 transitions. Word has length 16 [2020-10-25 21:18:44,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:44,172 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 194 transitions. [2020-10-25 21:18:44,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 194 transitions. [2020-10-25 21:18:44,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-25 21:18:44,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:44,174 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:44,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 21:18:44,174 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:44,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:44,175 INFO L82 PathProgramCache]: Analyzing trace with hash -843118083, now seen corresponding path program 1 times [2020-10-25 21:18:44,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:44,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942177251] [2020-10-25 21:18:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:44,244 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 21:18:44,245 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942177251] [2020-10-25 21:18:44,245 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:44,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:44,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165085602] [2020-10-25 21:18:44,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:44,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:44,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:44,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:44,248 INFO L87 Difference]: Start difference. First operand 122 states and 194 transitions. Second operand 3 states. [2020-10-25 21:18:44,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:44,287 INFO L93 Difference]: Finished difference Result 226 states and 358 transitions. [2020-10-25 21:18:44,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:44,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-10-25 21:18:44,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:44,290 INFO L225 Difference]: With dead ends: 226 [2020-10-25 21:18:44,290 INFO L226 Difference]: Without dead ends: 107 [2020-10-25 21:18:44,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:44,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-25 21:18:44,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 105. [2020-10-25 21:18:44,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-25 21:18:44,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 163 transitions. [2020-10-25 21:18:44,302 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 163 transitions. Word has length 21 [2020-10-25 21:18:44,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:44,302 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 163 transitions. [2020-10-25 21:18:44,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:44,303 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 163 transitions. [2020-10-25 21:18:44,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-25 21:18:44,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:44,304 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:44,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 21:18:44,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:44,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:44,306 INFO L82 PathProgramCache]: Analyzing trace with hash -671640130, now seen corresponding path program 1 times [2020-10-25 21:18:44,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:44,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511517853] [2020-10-25 21:18:44,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:44,500 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:44,500 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511517853] [2020-10-25 21:18:44,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864104139] [2020-10-25 21:18:44,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 21:18:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:44,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 21:18:44,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:18:44,658 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:44,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 21:18:44,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2020-10-25 21:18:44,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305032189] [2020-10-25 21:18:44,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 21:18:44,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:44,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 21:18:44,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-25 21:18:44,662 INFO L87 Difference]: Start difference. First operand 105 states and 163 transitions. Second operand 7 states. [2020-10-25 21:18:45,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:45,421 INFO L93 Difference]: Finished difference Result 435 states and 691 transitions. [2020-10-25 21:18:45,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 21:18:45,421 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-10-25 21:18:45,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:45,424 INFO L225 Difference]: With dead ends: 435 [2020-10-25 21:18:45,425 INFO L226 Difference]: Without dead ends: 316 [2020-10-25 21:18:45,425 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-25 21:18:45,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-25 21:18:45,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 292. [2020-10-25 21:18:45,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-25 21:18:45,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 460 transitions. [2020-10-25 21:18:45,449 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 460 transitions. Word has length 23 [2020-10-25 21:18:45,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:45,450 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 460 transitions. [2020-10-25 21:18:45,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 21:18:45,450 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 460 transitions. [2020-10-25 21:18:45,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 21:18:45,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:45,453 INFO L422 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] [2020-10-25 21:18:45,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-25 21:18:45,655 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:45,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1800121285, now seen corresponding path program 1 times [2020-10-25 21:18:45,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:45,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851429271] [2020-10-25 21:18:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:45,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:45,727 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-25 21:18:45,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851429271] [2020-10-25 21:18:45,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:45,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:45,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769407009] [2020-10-25 21:18:45,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:45,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:45,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:45,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:45,732 INFO L87 Difference]: Start difference. First operand 292 states and 460 transitions. Second operand 3 states. [2020-10-25 21:18:45,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:45,778 INFO L93 Difference]: Finished difference Result 582 states and 913 transitions. [2020-10-25 21:18:45,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:45,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-25 21:18:45,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:45,781 INFO L225 Difference]: With dead ends: 582 [2020-10-25 21:18:45,781 INFO L226 Difference]: Without dead ends: 314 [2020-10-25 21:18:45,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-25 21:18:45,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-10-25 21:18:45,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-25 21:18:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 480 transitions. [2020-10-25 21:18:45,804 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 480 transitions. Word has length 25 [2020-10-25 21:18:45,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:45,804 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 480 transitions. [2020-10-25 21:18:45,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:45,805 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 480 transitions. [2020-10-25 21:18:45,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 21:18:45,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:45,806 INFO L422 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] [2020-10-25 21:18:45,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 21:18:45,806 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:45,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:45,807 INFO L82 PathProgramCache]: Analyzing trace with hash 2124865792, now seen corresponding path program 1 times [2020-10-25 21:18:45,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:45,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677574745] [2020-10-25 21:18:45,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:45,895 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-25 21:18:45,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677574745] [2020-10-25 21:18:45,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:45,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:45,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356424686] [2020-10-25 21:18:45,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:45,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:45,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:45,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:45,898 INFO L87 Difference]: Start difference. First operand 312 states and 480 transitions. Second operand 3 states. [2020-10-25 21:18:45,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:45,915 INFO L93 Difference]: Finished difference Result 315 states and 482 transitions. [2020-10-25 21:18:45,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:45,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-25 21:18:45,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:45,918 INFO L225 Difference]: With dead ends: 315 [2020-10-25 21:18:45,918 INFO L226 Difference]: Without dead ends: 309 [2020-10-25 21:18:45,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:45,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-10-25 21:18:45,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 308. [2020-10-25 21:18:45,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-10-25 21:18:45,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 468 transitions. [2020-10-25 21:18:45,932 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 468 transitions. Word has length 27 [2020-10-25 21:18:45,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:45,932 INFO L481 AbstractCegarLoop]: Abstraction has 308 states and 468 transitions. [2020-10-25 21:18:45,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:45,932 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 468 transitions. [2020-10-25 21:18:45,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-25 21:18:45,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:45,934 INFO L422 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] [2020-10-25 21:18:45,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 21:18:45,934 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:45,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:45,935 INFO L82 PathProgramCache]: Analyzing trace with hash -917092134, now seen corresponding path program 1 times [2020-10-25 21:18:45,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:45,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188218635] [2020-10-25 21:18:45,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-25 21:18:45,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188218635] [2020-10-25 21:18:45,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:45,984 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:45,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389258271] [2020-10-25 21:18:45,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:45,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:45,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:45,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:45,986 INFO L87 Difference]: Start difference. First operand 308 states and 468 transitions. Second operand 3 states. [2020-10-25 21:18:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:46,026 INFO L93 Difference]: Finished difference Result 528 states and 802 transitions. [2020-10-25 21:18:46,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:46,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-25 21:18:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:46,029 INFO L225 Difference]: With dead ends: 528 [2020-10-25 21:18:46,029 INFO L226 Difference]: Without dead ends: 244 [2020-10-25 21:18:46,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:46,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-25 21:18:46,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 242. [2020-10-25 21:18:46,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-25 21:18:46,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 362 transitions. [2020-10-25 21:18:46,050 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 362 transitions. Word has length 33 [2020-10-25 21:18:46,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:46,051 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 362 transitions. [2020-10-25 21:18:46,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:46,051 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 362 transitions. [2020-10-25 21:18:46,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-25 21:18:46,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:46,052 INFO L422 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] [2020-10-25 21:18:46,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 21:18:46,053 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:46,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:46,053 INFO L82 PathProgramCache]: Analyzing trace with hash 272165387, now seen corresponding path program 1 times [2020-10-25 21:18:46,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:46,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191242045] [2020-10-25 21:18:46,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:46,098 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-25 21:18:46,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191242045] [2020-10-25 21:18:46,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:46,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:46,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443596826] [2020-10-25 21:18:46,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:46,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:46,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:46,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:46,101 INFO L87 Difference]: Start difference. First operand 242 states and 362 transitions. Second operand 3 states. [2020-10-25 21:18:46,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:46,143 INFO L93 Difference]: Finished difference Result 425 states and 633 transitions. [2020-10-25 21:18:46,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:46,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-10-25 21:18:46,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:46,145 INFO L225 Difference]: With dead ends: 425 [2020-10-25 21:18:46,145 INFO L226 Difference]: Without dead ends: 225 [2020-10-25 21:18:46,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:46,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-25 21:18:46,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2020-10-25 21:18:46,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-25 21:18:46,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 324 transitions. [2020-10-25 21:18:46,155 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 324 transitions. Word has length 37 [2020-10-25 21:18:46,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:46,155 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 324 transitions. [2020-10-25 21:18:46,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:46,156 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 324 transitions. [2020-10-25 21:18:46,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-25 21:18:46,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:46,157 INFO L422 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] [2020-10-25 21:18:46,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 21:18:46,157 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:46,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:46,158 INFO L82 PathProgramCache]: Analyzing trace with hash -140510671, now seen corresponding path program 1 times [2020-10-25 21:18:46,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:46,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933288976] [2020-10-25 21:18:46,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:46,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:46,254 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-25 21:18:46,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933288976] [2020-10-25 21:18:46,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 21:18:46,254 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 21:18:46,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050761442] [2020-10-25 21:18:46,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 21:18:46,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:46,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 21:18:46,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:46,258 INFO L87 Difference]: Start difference. First operand 223 states and 324 transitions. Second operand 3 states. [2020-10-25 21:18:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:46,297 INFO L93 Difference]: Finished difference Result 305 states and 442 transitions. [2020-10-25 21:18:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 21:18:46,298 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-10-25 21:18:46,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:46,300 INFO L225 Difference]: With dead ends: 305 [2020-10-25 21:18:46,300 INFO L226 Difference]: Without dead ends: 143 [2020-10-25 21:18:46,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 21:18:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-25 21:18:46,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 141. [2020-10-25 21:18:46,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-25 21:18:46,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 199 transitions. [2020-10-25 21:18:46,310 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 199 transitions. Word has length 46 [2020-10-25 21:18:46,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:46,310 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 199 transitions. [2020-10-25 21:18:46,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 21:18:46,311 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 199 transitions. [2020-10-25 21:18:46,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-25 21:18:46,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:46,312 INFO L422 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] [2020-10-25 21:18:46,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 21:18:46,312 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:46,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:46,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1014660280, now seen corresponding path program 1 times [2020-10-25 21:18:46,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:46,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100080942] [2020-10-25 21:18:46,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:46,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-25 21:18:46,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100080942] [2020-10-25 21:18:46,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905507742] [2020-10-25 21:18:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 21:18:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:46,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 21:18:46,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:18:46,652 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-25 21:18:46,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 21:18:46,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-10-25 21:18:46,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13278714] [2020-10-25 21:18:46,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 21:18:46,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:46,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 21:18:46,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 21:18:46,654 INFO L87 Difference]: Start difference. First operand 141 states and 199 transitions. Second operand 7 states. [2020-10-25 21:18:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:46,763 INFO L93 Difference]: Finished difference Result 186 states and 260 transitions. [2020-10-25 21:18:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 21:18:46,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 47 [2020-10-25 21:18:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:46,766 INFO L225 Difference]: With dead ends: 186 [2020-10-25 21:18:46,766 INFO L226 Difference]: Without dead ends: 178 [2020-10-25 21:18:46,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-25 21:18:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-25 21:18:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 137. [2020-10-25 21:18:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-25 21:18:46,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 191 transitions. [2020-10-25 21:18:46,777 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 191 transitions. Word has length 47 [2020-10-25 21:18:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:46,779 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 191 transitions. [2020-10-25 21:18:46,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 21:18:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 191 transitions. [2020-10-25 21:18:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-25 21:18:46,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:46,780 INFO L422 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, 1, 1, 1, 1] [2020-10-25 21:18:46,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-10-25 21:18:46,995 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:46,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:46,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1003777494, now seen corresponding path program 1 times [2020-10-25 21:18:46,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:46,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277886309] [2020-10-25 21:18:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:47,336 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:47,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277886309] [2020-10-25 21:18:47,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663463259] [2020-10-25 21:18:47,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 21:18:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:47,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 24 conjunts are in the unsatisfiable core [2020-10-25 21:18:47,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:18:47,648 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:47,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 21:18:47,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2020-10-25 21:18:47,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979771086] [2020-10-25 21:18:47,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 21:18:47,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:47,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 21:18:47,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-25 21:18:47,657 INFO L87 Difference]: Start difference. First operand 137 states and 191 transitions. Second operand 10 states. [2020-10-25 21:18:47,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:47,779 INFO L93 Difference]: Finished difference Result 160 states and 222 transitions. [2020-10-25 21:18:47,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 21:18:47,782 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-25 21:18:47,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:47,783 INFO L225 Difference]: With dead ends: 160 [2020-10-25 21:18:47,783 INFO L226 Difference]: Without dead ends: 158 [2020-10-25 21:18:47,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-25 21:18:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-25 21:18:47,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-25 21:18:47,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-25 21:18:47,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 220 transitions. [2020-10-25 21:18:47,792 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 220 transitions. Word has length 51 [2020-10-25 21:18:47,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:47,792 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 220 transitions. [2020-10-25 21:18:47,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 21:18:47,792 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 220 transitions. [2020-10-25 21:18:47,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-25 21:18:47,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:47,794 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:48,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-25 21:18:48,008 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:48,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:48,009 INFO L82 PathProgramCache]: Analyzing trace with hash 751253453, now seen corresponding path program 1 times [2020-10-25 21:18:48,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:48,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021298065] [2020-10-25 21:18:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:48,284 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:48,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021298065] [2020-10-25 21:18:48,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686384945] [2020-10-25 21:18:48,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 21:18:48,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:48,413 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 21 conjunts are in the unsatisfiable core [2020-10-25 21:18:48,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:18:48,528 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:48,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 21:18:48,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2020-10-25 21:18:48,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683601901] [2020-10-25 21:18:48,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-25 21:18:48,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:48,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-25 21:18:48,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-25 21:18:48,531 INFO L87 Difference]: Start difference. First operand 158 states and 220 transitions. Second operand 11 states. [2020-10-25 21:18:48,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:48,696 INFO L93 Difference]: Finished difference Result 250 states and 352 transitions. [2020-10-25 21:18:48,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 21:18:48,697 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-25 21:18:48,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:48,699 INFO L225 Difference]: With dead ends: 250 [2020-10-25 21:18:48,699 INFO L226 Difference]: Without dead ends: 248 [2020-10-25 21:18:48,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-25 21:18:48,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-25 21:18:48,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2020-10-25 21:18:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-25 21:18:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 346 transitions. [2020-10-25 21:18:48,711 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 346 transitions. Word has length 57 [2020-10-25 21:18:48,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:48,711 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 346 transitions. [2020-10-25 21:18:48,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-25 21:18:48,712 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 346 transitions. [2020-10-25 21:18:48,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-25 21:18:48,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 21:18:48,713 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 21:18:48,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 21:18:48,928 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 21:18:48,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 21:18:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash 366250712, now seen corresponding path program 1 times [2020-10-25 21:18:48,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 21:18:48,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232271992] [2020-10-25 21:18:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 21:18:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 159 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-25 21:18:49,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232271992] [2020-10-25 21:18:49,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855573176] [2020-10-25 21:18:49,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 21:18:49,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 21:18:49,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 41 conjunts are in the unsatisfiable core [2020-10-25 21:18:49,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 21:18:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 20 proven. 219 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 21:18:49,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 21:18:49,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 16 [2020-10-25 21:18:49,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304227102] [2020-10-25 21:18:49,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-25 21:18:49,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 21:18:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-25 21:18:49,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-25 21:18:49,923 INFO L87 Difference]: Start difference. First operand 248 states and 346 transitions. Second operand 16 states. [2020-10-25 21:18:50,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 21:18:50,127 INFO L93 Difference]: Finished difference Result 266 states and 372 transitions. [2020-10-25 21:18:50,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-25 21:18:50,128 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 108 [2020-10-25 21:18:50,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 21:18:50,128 INFO L225 Difference]: With dead ends: 266 [2020-10-25 21:18:50,128 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 21:18:50,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 100 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-25 21:18:50,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 21:18:50,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 21:18:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 21:18:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 21:18:50,130 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 108 [2020-10-25 21:18:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 21:18:50,130 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 21:18:50,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-25 21:18:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 21:18:50,130 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 21:18:50,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-25 21:18:50,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 21:18:50,528 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 31 [2020-10-25 21:18:50,848 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 46 [2020-10-25 21:18:50,853 INFO L274 CegarLoopResult]: For program point L432(lines 432 434) no Hoare annotation was computed. [2020-10-25 21:18:50,853 INFO L274 CegarLoopResult]: For program point L300(lines 300 302) no Hoare annotation was computed. [2020-10-25 21:18:50,853 INFO L274 CegarLoopResult]: For program point L168(lines 168 170) no Hoare annotation was computed. [2020-10-25 21:18:50,853 INFO L274 CegarLoopResult]: For program point L532(lines 532 534) no Hoare annotation was computed. [2020-10-25 21:18:50,853 INFO L274 CegarLoopResult]: For program point L400(lines 400 402) no Hoare annotation was computed. [2020-10-25 21:18:50,853 INFO L274 CegarLoopResult]: For program point L268(lines 268 270) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L500(lines 500 502) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L368(lines 368 370) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L468(lines 468 470) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L41(lines 41 60) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L42(lines 42 57) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L142(lines 142 157) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L242(lines 242 257) no Hoare annotation was computed. [2020-10-25 21:18:50,854 INFO L274 CegarLoopResult]: For program point L110(lines 110 125) no Hoare annotation was computed. [2020-10-25 21:18:50,855 INFO L274 CegarLoopResult]: For program point L44(lines 44 55) no Hoare annotation was computed. [2020-10-25 21:18:50,857 INFO L274 CegarLoopResult]: For program point L342(lines 342 357) no Hoare annotation was computed. [2020-10-25 21:18:50,857 INFO L274 CegarLoopResult]: For program point L210(lines 210 225) no Hoare annotation was computed. [2020-10-25 21:18:50,857 INFO L274 CegarLoopResult]: For program point L144(lines 144 155) no Hoare annotation was computed. [2020-10-25 21:18:50,857 INFO L274 CegarLoopResult]: For program point L78(lines 78 93) no Hoare annotation was computed. [2020-10-25 21:18:50,857 INFO L274 CegarLoopResult]: For program point L442(lines 442 457) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L310(lines 310 325) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L244(lines 244 255) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L178(lines 178 193) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L112(lines 112 123) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L542(lines 542 557) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L410(lines 410 425) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L344(lines 344 355) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L278(lines 278 293) no Hoare annotation was computed. [2020-10-25 21:18:50,858 INFO L274 CegarLoopResult]: For program point L212(lines 212 223) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L80(lines 80 91) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L510(lines 510 525) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L444(lines 444 455) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L378(lines 378 393) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L312(lines 312 323) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L180(lines 180 191) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L544(lines 544 555) no Hoare annotation was computed. [2020-10-25 21:18:50,859 INFO L274 CegarLoopResult]: For program point L478(lines 478 493) no Hoare annotation was computed. [2020-10-25 21:18:50,860 INFO L274 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2020-10-25 21:18:50,860 INFO L274 CegarLoopResult]: For program point L280(lines 280 291) no Hoare annotation was computed. [2020-10-25 21:18:50,860 INFO L274 CegarLoopResult]: For program point L148(lines 148 150) no Hoare annotation was computed. [2020-10-25 21:18:50,860 INFO L277 CegarLoopResult]: At program point L16(lines 16 568) the Hoare annotation is: true [2020-10-25 21:18:50,860 INFO L274 CegarLoopResult]: For program point L512(lines 512 523) no Hoare annotation was computed. [2020-10-25 21:18:50,860 INFO L274 CegarLoopResult]: For program point L380(lines 380 391) no Hoare annotation was computed. [2020-10-25 21:18:50,860 INFO L274 CegarLoopResult]: For program point L248(lines 248 250) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L116(lines 116 118) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L480(lines 480 491) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L348(lines 348 350) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L216(lines 216 218) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L84(lines 84 86) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L448(lines 448 450) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L316(lines 316 318) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L184(lines 184 186) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L548(lines 548 550) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point L416(lines 416 418) no Hoare annotation was computed. [2020-10-25 21:18:50,861 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 21:18:50,862 INFO L274 CegarLoopResult]: For program point L284(lines 284 286) no Hoare annotation was computed. [2020-10-25 21:18:50,862 INFO L270 CegarLoopResult]: At program point L549(lines 16 568) the Hoare annotation is: false [2020-10-25 21:18:50,862 INFO L274 CegarLoopResult]: For program point L516(lines 516 518) no Hoare annotation was computed. [2020-10-25 21:18:50,862 INFO L274 CegarLoopResult]: For program point L384(lines 384 386) no Hoare annotation was computed. [2020-10-25 21:18:50,862 INFO L274 CegarLoopResult]: For program point L484(lines 484 486) no Hoare annotation was computed. [2020-10-25 21:18:50,862 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 21:18:50,862 INFO L270 CegarLoopResult]: At program point L26-2(lines 26 563) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 2)) 2)) 2)) (<= 5 ULTIMATE.start_main_~q~0) (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648)) (= ULTIMATE.start_main_~this_buffer_empty~0 0) (<= (div ULTIMATE.start_main_~P8~0 4294967296) 0)) (and (= ULTIMATE.start_main_~q~0 0) (<= ULTIMATE.start_main_~this_buffer_empty~0 0) (< 0 (+ (div ULTIMATE.start_main_~this_buffer_empty~0 4294967296) 1)) (= ULTIMATE.start_main_~this_expect~0 0))) [2020-10-25 21:18:50,862 INFO L274 CegarLoopResult]: For program point L26-3(lines 26 563) no Hoare annotation was computed. [2020-10-25 21:18:50,862 INFO L274 CegarLoopResult]: For program point L126(lines 126 141) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L226(lines 226 241) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L94(lines 94 109) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L61(lines 61 160) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L326(lines 326 341) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L194(lines 194 209) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L161(lines 161 260) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L128(lines 128 139) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L62(lines 62 77) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L426(lines 426 441) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L294(lines 294 309) no Hoare annotation was computed. [2020-10-25 21:18:50,863 INFO L274 CegarLoopResult]: For program point L261(lines 261 360) no Hoare annotation was computed. [2020-10-25 21:18:50,864 INFO L274 CegarLoopResult]: For program point L228(lines 228 239) no Hoare annotation was computed. [2020-10-25 21:18:50,864 INFO L274 CegarLoopResult]: For program point L162(lines 162 177) no Hoare annotation was computed. [2020-10-25 21:18:50,864 INFO L274 CegarLoopResult]: For program point L96(lines 96 107) no Hoare annotation was computed. [2020-10-25 21:18:50,866 INFO L270 CegarLoopResult]: At program point L559(lines 26 563) the Hoare annotation is: (let ((.cse4 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 2)) 2)) 2))) (.cse3 (= ULTIMATE.start_main_~this_buffer_empty~0 1)) (.cse0 (<= ULTIMATE.start_main_~this_expect~0 (+ (* 2 (div (+ ULTIMATE.start_main_~this_expect~0 (- 1)) 2)) 1))) (.cse1 (<= 0 (+ ULTIMATE.start_main_~P8~0 2147483648))) (.cse5 (= ULTIMATE.start_main_~this_buffer_empty~0 0)) (.cse2 (<= (div ULTIMATE.start_main_~P8~0 4294967296) 0))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~q~0 4) .cse3) (and .cse4 (<= 5 ULTIMATE.start_main_~q~0) .cse1 .cse5 .cse2) (and (= ULTIMATE.start_main_~q~0 0) (<= ULTIMATE.start_main_~this_buffer_empty~0 0) (< 0 (+ (div ULTIMATE.start_main_~this_buffer_empty~0 4294967296) 1)) (= ULTIMATE.start_main_~this_expect~0 0)) (and (= ULTIMATE.start_main_~q~0 1) .cse4 .cse1 .cse2 .cse3) (and .cse0 .cse1 (= ULTIMATE.start_main_~q~0 3) .cse5 .cse2))) [2020-10-25 21:18:50,866 INFO L274 CegarLoopResult]: For program point L526(lines 526 541) no Hoare annotation was computed. [2020-10-25 21:18:50,866 INFO L274 CegarLoopResult]: For program point L394(lines 394 409) no Hoare annotation was computed. [2020-10-25 21:18:50,867 INFO L274 CegarLoopResult]: For program point L361(lines 361 460) no Hoare annotation was computed. [2020-10-25 21:18:50,867 INFO L274 CegarLoopResult]: For program point L328(lines 328 339) no Hoare annotation was computed. [2020-10-25 21:18:50,867 INFO L274 CegarLoopResult]: For program point L262(lines 262 277) no Hoare annotation was computed. [2020-10-25 21:18:50,867 INFO L274 CegarLoopResult]: For program point L196(lines 196 207) no Hoare annotation was computed. [2020-10-25 21:18:50,867 INFO L274 CegarLoopResult]: For program point L64(lines 64 75) no Hoare annotation was computed. [2020-10-25 21:18:50,867 INFO L274 CegarLoopResult]: For program point L494(lines 494 509) no Hoare annotation was computed. [2020-10-25 21:18:50,868 INFO L274 CegarLoopResult]: For program point L461(lines 461 560) no Hoare annotation was computed. [2020-10-25 21:18:50,868 INFO L274 CegarLoopResult]: For program point L428(lines 428 439) no Hoare annotation was computed. [2020-10-25 21:18:50,868 INFO L274 CegarLoopResult]: For program point L362(lines 362 377) no Hoare annotation was computed. [2020-10-25 21:18:50,868 INFO L274 CegarLoopResult]: For program point L296(lines 296 307) no Hoare annotation was computed. [2020-10-25 21:18:50,868 INFO L274 CegarLoopResult]: For program point L164(lines 164 175) no Hoare annotation was computed. [2020-10-25 21:18:50,868 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 21:18:50,869 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-25 21:18:50,869 INFO L274 CegarLoopResult]: For program point L528(lines 528 539) no Hoare annotation was computed. [2020-10-25 21:18:50,869 INFO L274 CegarLoopResult]: For program point L462(lines 462 477) no Hoare annotation was computed. [2020-10-25 21:18:50,869 INFO L274 CegarLoopResult]: For program point L396(lines 396 407) no Hoare annotation was computed. [2020-10-25 21:18:50,869 INFO L274 CegarLoopResult]: For program point L264(lines 264 275) no Hoare annotation was computed. [2020-10-25 21:18:50,870 INFO L274 CegarLoopResult]: For program point L132(lines 132 134) no Hoare annotation was computed. [2020-10-25 21:18:50,870 INFO L274 CegarLoopResult]: For program point L496(lines 496 507) no Hoare annotation was computed. [2020-10-25 21:18:50,870 INFO L274 CegarLoopResult]: For program point L364(lines 364 375) no Hoare annotation was computed. [2020-10-25 21:18:50,870 INFO L274 CegarLoopResult]: For program point L232(lines 232 234) no Hoare annotation was computed. [2020-10-25 21:18:50,870 INFO L274 CegarLoopResult]: For program point L100(lines 100 102) no Hoare annotation was computed. [2020-10-25 21:18:50,870 INFO L274 CegarLoopResult]: For program point L464(lines 464 475) no Hoare annotation was computed. [2020-10-25 21:18:50,871 INFO L274 CegarLoopResult]: For program point L332(lines 332 334) no Hoare annotation was computed. [2020-10-25 21:18:50,871 INFO L274 CegarLoopResult]: For program point L200(lines 200 202) no Hoare annotation was computed. [2020-10-25 21:18:50,871 INFO L274 CegarLoopResult]: For program point L68(lines 68 70) no Hoare annotation was computed. [2020-10-25 21:18:50,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 09:18:50 BoogieIcfgContainer [2020-10-25 21:18:50,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 21:18:50,922 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 21:18:50,922 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 21:18:50,923 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 21:18:50,924 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 09:18:42" (3/4) ... [2020-10-25 21:18:50,928 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 21:18:50,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 21:18:50,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 21:18:50,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 21:18:50,946 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 21:18:50,984 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 21:18:50,984 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 21:18:50,986 INFO L168 Benchmark]: Toolchain (without parser) took 9945.71 ms. Allocated memory was 46.1 MB in the beginning and 146.8 MB in the end (delta: 100.7 MB). Free memory was 21.9 MB in the beginning and 89.8 MB in the end (delta: -68.0 MB). Peak memory consumption was 32.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:18:50,987 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 46.1 MB. Free memory was 27.8 MB in the beginning and 27.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 21:18:50,988 INFO L168 Benchmark]: CACSL2BoogieTranslator took 583.72 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 35.0 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:18:50,988 INFO L168 Benchmark]: Boogie Procedure Inliner took 137.77 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 30.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-10-25 21:18:50,989 INFO L168 Benchmark]: Boogie Preprocessor took 104.37 ms. Allocated memory is still 56.6 MB. Free memory was 30.0 MB in the beginning and 26.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 21:18:50,990 INFO L168 Benchmark]: RCFGBuilder took 1090.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.9 MB in the beginning and 42.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2020-10-25 21:18:50,990 INFO L168 Benchmark]: TraceAbstraction took 7949.95 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 42.4 MB in the beginning and 93.0 MB in the end (delta: -50.6 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. [2020-10-25 21:18:50,991 INFO L168 Benchmark]: Witness Printer took 62.49 ms. Allocated memory is still 146.8 MB. Free memory was 93.0 MB in the beginning and 89.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 21:18:50,994 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 46.1 MB. Free memory was 27.8 MB in the beginning and 27.7 MB in the end (delta: 62.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 583.72 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 21.3 MB in the beginning and 35.0 MB in the end (delta: -13.7 MB). Peak memory consumption was 7.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 137.77 ms. Allocated memory is still 56.6 MB. Free memory was 35.0 MB in the beginning and 30.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 104.37 ms. Allocated memory is still 56.6 MB. Free memory was 30.0 MB in the beginning and 26.9 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1090.35 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 26.9 MB in the beginning and 42.8 MB in the end (delta: -16.0 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7949.95 ms. Allocated memory was 69.2 MB in the beginning and 146.8 MB in the end (delta: 77.6 MB). Free memory was 42.4 MB in the beginning and 93.0 MB in the end (delta: -50.6 MB). Peak memory consumption was 67.8 MB. Max. memory is 16.1 GB. * Witness Printer took 62.49 ms. Allocated memory is still 146.8 MB. Free memory was 93.0 MB in the beginning and 89.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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 * ((this_expect + -2) / 2) + 2 && 5 <= q) && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 / 4294967296 <= 0) || (((q == 0 && this_buffer_empty <= 0) && 0 < this_buffer_empty / 4294967296 + 1) && this_expect == 0) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: (((((((this_expect <= 2 * ((this_expect + -1) / 2) + 1 && 0 <= P8 + 2147483648) && P8 / 4294967296 <= 0) && q == 4) && this_buffer_empty == 1) || ((((this_expect <= 2 * ((this_expect + -2) / 2) + 2 && 5 <= q) && 0 <= P8 + 2147483648) && this_buffer_empty == 0) && P8 / 4294967296 <= 0)) || (((q == 0 && this_buffer_empty <= 0) && 0 < this_buffer_empty / 4294967296 + 1) && this_expect == 0)) || ((((q == 1 && this_expect <= 2 * ((this_expect + -2) / 2) + 2) && 0 <= P8 + 2147483648) && P8 / 4294967296 <= 0) && this_buffer_empty == 1)) || ((((this_expect <= 2 * ((this_expect + -1) / 2) + 1 && 0 <= P8 + 2147483648) && q == 3) && this_buffer_empty == 0) && P8 / 4294967296 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 110 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.3s, OverallIterations: 15, TraceHistogramMax: 11, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2321 SDtfs, 1898 SDslu, 6439 SDs, 0 SdLazy, 731 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 356 GetRequests, 295 SyntacticMatches, 5 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=312occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 15 MinimizatonAttempts, 92 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 24 NumberOfFragments, 178 HoareAnnotationTreeSize, 4 FomulaSimplifications, 154 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 857 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 811 NumberOfCodeBlocks, 811 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 791 ConstructedInterpolants, 0 QuantifiedInterpolants, 417448 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2051 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 271/825 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...