./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/locks/test_locks_6.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/locks/test_locks_6.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 8a6bc1adbcafb13db44c5d4b4826990150e2f336 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 19:39:15,381 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:39:15,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:39:15,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:39:15,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:39:15,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:39:15,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:39:15,469 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:39:15,473 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:39:15,480 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:39:15,483 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:39:15,489 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:39:15,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:39:15,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:39:15,495 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:39:15,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:39:15,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:39:15,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:39:15,505 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:39:15,513 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:39:15,515 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:39:15,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:39:15,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:39:15,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:39:15,529 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:39:15,529 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:39:15,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:39:15,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:39:15,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:39:15,534 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:39:15,535 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:39:15,536 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:39:15,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:39:15,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:39:15,547 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:39:15,548 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:39:15,549 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:39:15,550 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:39:15,550 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:39:15,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:39:15,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:39:15,554 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:39:15,612 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:39:15,613 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:39:15,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:39:15,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:39:15,617 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:39:15,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:39:15,618 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:39:15,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:39:15,618 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:39:15,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:39:15,620 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:39:15,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:39:15,621 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:39:15,621 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:39:15,621 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:39:15,622 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:39:15,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:39:15,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:39:15,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:39:15,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:39:15,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:39:15,624 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:39:15,624 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:39:15,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:39:15,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:39:15,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:39:15,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:39:15,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:39:15,626 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:39:15,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a6bc1adbcafb13db44c5d4b4826990150e2f336 [2020-10-25 19:39:16,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:39:16,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:39:16,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:39:16,124 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:39:16,125 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:39:16,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_6.c [2020-10-25 19:39:16,209 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0306674ce/067e2c64cf5a440faccb00c3d19b53cc/FLAG79a5964e4 [2020-10-25 19:39:16,777 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:39:16,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c [2020-10-25 19:39:16,786 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0306674ce/067e2c64cf5a440faccb00c3d19b53cc/FLAG79a5964e4 [2020-10-25 19:39:17,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0306674ce/067e2c64cf5a440faccb00c3d19b53cc [2020-10-25 19:39:17,137 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:39:17,144 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:39:17,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:17,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:39:17,150 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:39:17,151 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,155 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@431c9906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17, skipping insertion in model container [2020-10-25 19:39:17,155 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:39:17,182 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:39:17,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:17,402 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:39:17,447 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:39:17,470 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:39:17,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17 WrapperNode [2020-10-25 19:39:17,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:39:17,474 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:17,475 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:39:17,475 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:39:17,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,500 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:39:17,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:39:17,537 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:39:17,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:39:17,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,564 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,565 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,594 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (1/1) ... [2020-10-25 19:39:17,597 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:39:17,599 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:39:17,599 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:39:17,599 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:39:17,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (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 19:39:17,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:39:17,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:39:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:39:17,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:39:18,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:39:18,264 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-25 19:39:18,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:18 BoogieIcfgContainer [2020-10-25 19:39:18,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:39:18,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:39:18,270 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:39:18,274 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:39:18,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:39:17" (1/3) ... [2020-10-25 19:39:18,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32577e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:18, skipping insertion in model container [2020-10-25 19:39:18,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:39:17" (2/3) ... [2020-10-25 19:39:18,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32577e41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:39:18, skipping insertion in model container [2020-10-25 19:39:18,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:18" (3/3) ... [2020-10-25 19:39:18,280 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-10-25 19:39:18,297 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:39:18,303 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:39:18,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:39:18,362 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:39:18,363 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:39:18,363 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:39:18,363 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:39:18,363 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:39:18,363 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:39:18,364 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:39:18,364 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:39:18,384 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-25 19:39:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 19:39:18,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:18,396 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:18,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:18,404 INFO L82 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2020-10-25 19:39:18,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:18,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176888234] [2020-10-25 19:39:18,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:18,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:18,697 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 19:39:18,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176888234] [2020-10-25 19:39:18,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:18,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:18,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242046355] [2020-10-25 19:39:18,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:18,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:18,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:18,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:18,724 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-25 19:39:18,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:18,773 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2020-10-25 19:39:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:18,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-25 19:39:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:18,791 INFO L225 Difference]: With dead ends: 60 [2020-10-25 19:39:18,791 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 19:39:18,795 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 19:39:18,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 19:39:18,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-10-25 19:39:18,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-25 19:39:18,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2020-10-25 19:39:18,839 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2020-10-25 19:39:18,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:18,840 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2020-10-25 19:39:18,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2020-10-25 19:39:18,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-25 19:39:18,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:18,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:18,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:39:18,842 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:18,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:18,843 INFO L82 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2020-10-25 19:39:18,843 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:18,843 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248961842] [2020-10-25 19:39:18,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:18,890 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 19:39:18,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248961842] [2020-10-25 19:39:18,891 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:18,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:18,892 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301692940] [2020-10-25 19:39:18,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:18,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:18,896 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2020-10-25 19:39:18,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:18,938 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2020-10-25 19:39:18,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:18,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-25 19:39:18,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:18,940 INFO L225 Difference]: With dead ends: 74 [2020-10-25 19:39:18,941 INFO L226 Difference]: Without dead ends: 45 [2020-10-25 19:39:18,942 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 19:39:18,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-25 19:39:18,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-25 19:39:18,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-25 19:39:18,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2020-10-25 19:39:18,950 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2020-10-25 19:39:18,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:18,950 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2020-10-25 19:39:18,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:18,951 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2020-10-25 19:39:18,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 19:39:18,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:18,952 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:18,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:39:18,952 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:18,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:18,953 INFO L82 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2020-10-25 19:39:18,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:18,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91457957] [2020-10-25 19:39:18,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:18,996 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 19:39:18,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91457957] [2020-10-25 19:39:18,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:18,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:18,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113371310] [2020-10-25 19:39:18,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:18,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:18,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:18,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:18,999 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand 3 states. [2020-10-25 19:39:19,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,017 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-10-25 19:39:19,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-25 19:39:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,019 INFO L225 Difference]: With dead ends: 69 [2020-10-25 19:39:19,019 INFO L226 Difference]: Without dead ends: 48 [2020-10-25 19:39:19,020 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 19:39:19,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-25 19:39:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-25 19:39:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-25 19:39:19,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2020-10-25 19:39:19,036 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2020-10-25 19:39:19,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,037 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2020-10-25 19:39:19,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,038 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-10-25 19:39:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 19:39:19,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:39:19,039 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,040 INFO L82 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2020-10-25 19:39:19,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612698683] [2020-10-25 19:39:19,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,102 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 19:39:19,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612698683] [2020-10-25 19:39:19,103 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,103 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948559255] [2020-10-25 19:39:19,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,106 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 3 states. [2020-10-25 19:39:19,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,124 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2020-10-25 19:39:19,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,124 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-25 19:39:19,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,126 INFO L225 Difference]: With dead ends: 85 [2020-10-25 19:39:19,126 INFO L226 Difference]: Without dead ends: 83 [2020-10-25 19:39:19,127 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 19:39:19,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-25 19:39:19,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-10-25 19:39:19,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-25 19:39:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2020-10-25 19:39:19,137 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2020-10-25 19:39:19,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,138 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2020-10-25 19:39:19,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,138 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2020-10-25 19:39:19,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-25 19:39:19,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:39:19,140 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,140 INFO L82 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2020-10-25 19:39:19,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067818813] [2020-10-25 19:39:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,186 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 19:39:19,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067818813] [2020-10-25 19:39:19,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350052894] [2020-10-25 19:39:19,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,189 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand 3 states. [2020-10-25 19:39:19,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,212 INFO L93 Difference]: Finished difference Result 141 states and 235 transitions. [2020-10-25 19:39:19,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-25 19:39:19,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,214 INFO L225 Difference]: With dead ends: 141 [2020-10-25 19:39:19,214 INFO L226 Difference]: Without dead ends: 85 [2020-10-25 19:39:19,215 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 19:39:19,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-25 19:39:19,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-25 19:39:19,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-25 19:39:19,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2020-10-25 19:39:19,228 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2020-10-25 19:39:19,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,228 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2020-10-25 19:39:19,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,229 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2020-10-25 19:39:19,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:39:19,230 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,230 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:39:19,230 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,231 INFO L82 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2020-10-25 19:39:19,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128347604] [2020-10-25 19:39:19,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,270 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 19:39:19,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128347604] [2020-10-25 19:39:19,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165942176] [2020-10-25 19:39:19,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,273 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand 3 states. [2020-10-25 19:39:19,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,299 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2020-10-25 19:39:19,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,300 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 19:39:19,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,301 INFO L225 Difference]: With dead ends: 126 [2020-10-25 19:39:19,301 INFO L226 Difference]: Without dead ends: 87 [2020-10-25 19:39:19,302 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 19:39:19,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-25 19:39:19,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-25 19:39:19,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-25 19:39:19,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2020-10-25 19:39:19,315 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2020-10-25 19:39:19,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,315 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2020-10-25 19:39:19,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,316 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2020-10-25 19:39:19,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:39:19,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-25 19:39:19,318 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2020-10-25 19:39:19,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374517002] [2020-10-25 19:39:19,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,375 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 19:39:19,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374517002] [2020-10-25 19:39:19,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434494275] [2020-10-25 19:39:19,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,379 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand 3 states. [2020-10-25 19:39:19,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,444 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2020-10-25 19:39:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,445 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 19:39:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,447 INFO L225 Difference]: With dead ends: 237 [2020-10-25 19:39:19,447 INFO L226 Difference]: Without dead ends: 159 [2020-10-25 19:39:19,452 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 19:39:19,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-25 19:39:19,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-10-25 19:39:19,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-25 19:39:19,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2020-10-25 19:39:19,477 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2020-10-25 19:39:19,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,477 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2020-10-25 19:39:19,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,478 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2020-10-25 19:39:19,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-25 19:39:19,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-25 19:39:19,480 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2020-10-25 19:39:19,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385232359] [2020-10-25 19:39:19,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,516 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 19:39:19,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385232359] [2020-10-25 19:39:19,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,517 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088761678] [2020-10-25 19:39:19,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,519 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand 3 states. [2020-10-25 19:39:19,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,539 INFO L93 Difference]: Finished difference Result 193 states and 301 transitions. [2020-10-25 19:39:19,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,540 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-25 19:39:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,542 INFO L225 Difference]: With dead ends: 193 [2020-10-25 19:39:19,542 INFO L226 Difference]: Without dead ends: 191 [2020-10-25 19:39:19,543 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 19:39:19,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-25 19:39:19,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-10-25 19:39:19,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-25 19:39:19,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2020-10-25 19:39:19,560 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2020-10-25 19:39:19,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,561 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2020-10-25 19:39:19,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,561 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2020-10-25 19:39:19,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:19,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-25 19:39:19,564 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,565 INFO L82 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2020-10-25 19:39:19,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177618885] [2020-10-25 19:39:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,597 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 19:39:19,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177618885] [2020-10-25 19:39:19,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643577544] [2020-10-25 19:39:19,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,601 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand 3 states. [2020-10-25 19:39:19,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,621 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions. [2020-10-25 19:39:19,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,621 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:19,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,624 INFO L225 Difference]: With dead ends: 277 [2020-10-25 19:39:19,624 INFO L226 Difference]: Without dead ends: 275 [2020-10-25 19:39:19,624 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 19:39:19,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-25 19:39:19,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2020-10-25 19:39:19,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-25 19:39:19,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-10-25 19:39:19,642 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2020-10-25 19:39:19,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,642 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-10-25 19:39:19,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,643 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-10-25 19:39:19,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-25 19:39:19,645 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-25 19:39:19,645 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,646 INFO L82 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2020-10-25 19:39:19,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834053524] [2020-10-25 19:39:19,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,692 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 19:39:19,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834053524] [2020-10-25 19:39:19,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495273783] [2020-10-25 19:39:19,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,695 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 3 states. [2020-10-25 19:39:19,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,721 INFO L93 Difference]: Finished difference Result 517 states and 769 transitions. [2020-10-25 19:39:19,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,722 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-25 19:39:19,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,724 INFO L225 Difference]: With dead ends: 517 [2020-10-25 19:39:19,724 INFO L226 Difference]: Without dead ends: 299 [2020-10-25 19:39:19,725 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 19:39:19,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-25 19:39:19,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-10-25 19:39:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-25 19:39:19,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2020-10-25 19:39:19,750 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2020-10-25 19:39:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,750 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2020-10-25 19:39:19,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2020-10-25 19:39:19,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:19,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-25 19:39:19,753 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,754 INFO L82 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2020-10-25 19:39:19,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657120693] [2020-10-25 19:39:19,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,795 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 19:39:19,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657120693] [2020-10-25 19:39:19,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683654014] [2020-10-25 19:39:19,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,798 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand 3 states. [2020-10-25 19:39:19,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,830 INFO L93 Difference]: Finished difference Result 453 states and 649 transitions. [2020-10-25 19:39:19,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:19,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,833 INFO L225 Difference]: With dead ends: 453 [2020-10-25 19:39:19,833 INFO L226 Difference]: Without dead ends: 311 [2020-10-25 19:39:19,834 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 19:39:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-25 19:39:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2020-10-25 19:39:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-25 19:39:19,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2020-10-25 19:39:19,854 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2020-10-25 19:39:19,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,854 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2020-10-25 19:39:19,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2020-10-25 19:39:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:19,857 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,857 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-25 19:39:19,858 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2020-10-25 19:39:19,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982993991] [2020-10-25 19:39:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:19,894 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 19:39:19,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982993991] [2020-10-25 19:39:19,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:19,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:19,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647347418] [2020-10-25 19:39:19,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:19,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:19,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:19,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:19,897 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand 3 states. [2020-10-25 19:39:19,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:19,938 INFO L93 Difference]: Finished difference Result 521 states and 733 transitions. [2020-10-25 19:39:19,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:19,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:19,942 INFO L225 Difference]: With dead ends: 521 [2020-10-25 19:39:19,942 INFO L226 Difference]: Without dead ends: 519 [2020-10-25 19:39:19,943 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 19:39:19,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-25 19:39:19,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2020-10-25 19:39:19,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-25 19:39:19,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2020-10-25 19:39:19,962 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2020-10-25 19:39:19,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:19,962 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2020-10-25 19:39:19,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:19,962 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2020-10-25 19:39:19,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-25 19:39:19,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:19,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:19,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-25 19:39:19,966 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:19,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:19,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2020-10-25 19:39:19,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:19,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712151743] [2020-10-25 19:39:19,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:19,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:20,005 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 19:39:20,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712151743] [2020-10-25 19:39:20,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:20,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:20,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400702812] [2020-10-25 19:39:20,007 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:20,007 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:20,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:20,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:20,012 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand 3 states. [2020-10-25 19:39:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:20,042 INFO L93 Difference]: Finished difference Result 1017 states and 1373 transitions. [2020-10-25 19:39:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:20,043 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-25 19:39:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:20,046 INFO L225 Difference]: With dead ends: 1017 [2020-10-25 19:39:20,046 INFO L226 Difference]: Without dead ends: 583 [2020-10-25 19:39:20,048 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 19:39:20,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-10-25 19:39:20,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-10-25 19:39:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-25 19:39:20,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2020-10-25 19:39:20,070 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2020-10-25 19:39:20,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:20,071 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2020-10-25 19:39:20,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:20,071 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2020-10-25 19:39:20,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:20,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:20,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:20,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-25 19:39:20,073 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:20,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:20,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2020-10-25 19:39:20,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:20,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638238714] [2020-10-25 19:39:20,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:20,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:20,113 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 19:39:20,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638238714] [2020-10-25 19:39:20,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:20,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:20,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082730026] [2020-10-25 19:39:20,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:20,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:20,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:20,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:20,116 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand 3 states. [2020-10-25 19:39:20,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:20,143 INFO L93 Difference]: Finished difference Result 873 states and 1125 transitions. [2020-10-25 19:39:20,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:20,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:20,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:20,147 INFO L225 Difference]: With dead ends: 873 [2020-10-25 19:39:20,147 INFO L226 Difference]: Without dead ends: 599 [2020-10-25 19:39:20,148 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 19:39:20,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-25 19:39:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-10-25 19:39:20,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-25 19:39:20,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2020-10-25 19:39:20,172 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2020-10-25 19:39:20,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:20,172 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2020-10-25 19:39:20,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:20,173 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2020-10-25 19:39:20,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:20,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:20,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:20,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-25 19:39:20,174 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:20,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:20,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2020-10-25 19:39:20,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:20,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58254606] [2020-10-25 19:39:20,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:20,199 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 19:39:20,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58254606] [2020-10-25 19:39:20,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:20,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:20,200 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777715339] [2020-10-25 19:39:20,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:20,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:20,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:20,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:20,201 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand 3 states. [2020-10-25 19:39:20,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:20,236 INFO L93 Difference]: Finished difference Result 967 states and 1204 transitions. [2020-10-25 19:39:20,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:20,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:20,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:20,241 INFO L225 Difference]: With dead ends: 967 [2020-10-25 19:39:20,242 INFO L226 Difference]: Without dead ends: 965 [2020-10-25 19:39:20,242 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 19:39:20,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-10-25 19:39:20,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2020-10-25 19:39:20,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-25 19:39:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2020-10-25 19:39:20,278 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2020-10-25 19:39:20,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:20,279 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2020-10-25 19:39:20,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2020-10-25 19:39:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-25 19:39:20,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:39:20,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:39:20,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-25 19:39:20,281 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:39:20,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:39:20,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2020-10-25 19:39:20,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:39:20,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815480179] [2020-10-25 19:39:20,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:39:20,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:39:20,304 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 19:39:20,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815480179] [2020-10-25 19:39:20,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:39:20,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:39:20,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920247915] [2020-10-25 19:39:20,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:39:20,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:39:20,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:39:20,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:39:20,306 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand 3 states. [2020-10-25 19:39:20,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:39:20,351 INFO L93 Difference]: Finished difference Result 1989 states and 2387 transitions. [2020-10-25 19:39:20,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:39:20,351 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-25 19:39:20,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:39:20,352 INFO L225 Difference]: With dead ends: 1989 [2020-10-25 19:39:20,352 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:39:20,354 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 19:39:20,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:39:20,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:39:20,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:39:20,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:39:20,355 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-25 19:39:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:39:20,355 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:39:20,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:39:20,356 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:39:20,356 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:39:20,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-25 19:39:20,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:39:20,376 INFO L274 CegarLoopResult]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,376 INFO L274 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-10-25 19:39:20,376 INFO L274 CegarLoopResult]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,376 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 19:39:20,376 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:39:20,376 INFO L274 CegarLoopResult]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,377 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:39:20,377 INFO L274 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-10-25 19:39:20,377 INFO L274 CegarLoopResult]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,377 INFO L274 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-10-25 19:39:20,377 INFO L277 CegarLoopResult]: At program point L105(lines 7 109) the Hoare annotation is: true [2020-10-25 19:39:20,377 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-10-25 19:39:20,377 INFO L274 CegarLoopResult]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L274 CegarLoopResult]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,378 INFO L277 CegarLoopResult]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2020-10-25 19:39:20,379 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:39:20,379 INFO L277 CegarLoopResult]: At program point L108(lines 6 109) the Hoare annotation is: true [2020-10-25 19:39:20,379 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-10-25 19:39:20,379 INFO L274 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-10-25 19:39:20,379 INFO L270 CegarLoopResult]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2020-10-25 19:39:20,379 INFO L274 CegarLoopResult]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,379 INFO L274 CegarLoopResult]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2020-10-25 19:39:20,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:39:20 BoogieIcfgContainer [2020-10-25 19:39:20,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:39:20,392 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:39:20,392 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:39:20,392 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:39:20,393 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:39:18" (3/4) ... [2020-10-25 19:39:20,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:39:20,409 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-25 19:39:20,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-25 19:39:20,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:20,410 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:39:20,469 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:39:20,469 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:39:20,472 INFO L168 Benchmark]: Toolchain (without parser) took 3332.10 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 25.5 MB in the beginning and 28.2 MB in the end (delta: -2.7 MB). Peak memory consumption was 22.3 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:20,472 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 39.8 MB. Free memory was 23.2 MB in the beginning and 23.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:39:20,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.76 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 26.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:20,473 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.78 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:20,474 INFO L168 Benchmark]: Boogie Preprocessor took 61.70 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:39:20,474 INFO L168 Benchmark]: RCFGBuilder took 667.72 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 31.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:20,475 INFO L168 Benchmark]: TraceAbstraction took 2122.97 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 31.2 MB in the beginning and 31.0 MB in the end (delta: 182.6 kB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:20,476 INFO L168 Benchmark]: Witness Printer took 77.78 ms. Allocated memory is still 71.3 MB. Free memory was 31.0 MB in the beginning and 28.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:39:20,479 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 39.8 MB. Free memory was 23.2 MB in the beginning and 23.2 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 326.76 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 26.2 MB in the end (delta: -1.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.78 ms. Allocated memory is still 48.2 MB. Free memory was 26.2 MB in the beginning and 24.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 61.70 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 23.5 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 667.72 ms. Allocated memory is still 48.2 MB. Free memory was 23.5 MB in the beginning and 31.6 MB in the end (delta: -8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2122.97 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 31.2 MB in the beginning and 31.0 MB in the end (delta: 182.6 kB). Peak memory consumption was 23.4 MB. Max. memory is 16.1 GB. * Witness Printer took 77.78 ms. Allocated memory is still 71.3 MB. Free memory was 31.0 MB in the beginning and 28.2 MB in the end (delta: 2.8 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: 3]: 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: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.9s, OverallIterations: 16, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 828 SDtfs, 391 SDslu, 527 SDs, 0 SdLazy, 85 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=901occurred in iteration=15, 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, 16 MinimizatonAttempts, 268 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 73 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 250 NumberOfCodeBlocks, 250 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 234 ConstructedInterpolants, 0 QuantifiedInterpolants, 6810 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 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...