./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 9a8b2e8d 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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-19 22:24:51,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:24:51,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:24:51,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:24:51,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:24:51,400 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:24:51,402 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:24:51,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:24:51,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:24:51,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:24:51,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:24:51,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:24:51,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:24:51,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:24:51,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:24:51,428 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:24:51,430 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:24:51,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:24:51,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:24:51,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:24:51,443 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:24:51,444 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:24:51,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:24:51,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:24:51,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:24:51,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:24:51,451 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:24:51,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:24:51,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:24:51,455 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:24:51,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:24:51,456 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:24:51,456 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:24:51,457 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:24:51,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:24:51,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:24:51,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:24:51,461 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:24:51,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:24:51,462 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:24:51,463 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:24:51,464 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:24:51,503 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:24:51,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:24:51,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:24:51,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:24:51,506 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:24:51,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:24:51,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:24:51,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:24:51,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:24:51,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:24:51,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:24:51,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:24:51,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:24:51,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:24:51,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:24:51,510 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:24:51,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:24:51,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:24:51,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:24:51,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:24:51,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:24:51,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:24:51,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:24:51,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:24:51,512 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:24:51,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:24:51,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:24:51,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:24:51,513 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:24:51,514 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-19 22:24:51,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:24:51,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:24:51,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:24:51,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:24:51,742 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:24:51,743 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_6.c [2020-10-19 22:24:51,820 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4701da436/20987732c2b643e7b1f66dede1e3f484/FLAG0084ba52d [2020-10-19 22:24:52,292 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:24:52,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_6.c [2020-10-19 22:24:52,300 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4701da436/20987732c2b643e7b1f66dede1e3f484/FLAG0084ba52d [2020-10-19 22:24:52,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4701da436/20987732c2b643e7b1f66dede1e3f484 [2020-10-19 22:24:52,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:24:52,665 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:24:52,666 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:52,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:24:52,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:24:52,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:52" (1/1) ... [2020-10-19 22:24:52,676 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692c6187 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:52, skipping insertion in model container [2020-10-19 22:24:52,676 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:52" (1/1) ... [2020-10-19 22:24:52,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:24:52,715 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:24:52,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:53,000 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:24:53,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:53,063 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:24:53,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53 WrapperNode [2020-10-19 22:24:53,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:53,064 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:53,064 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:24:53,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:24:53,072 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,099 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:53,100 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:24:53,100 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:24:53,100 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:24:53,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,110 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,120 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,121 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (1/1) ... [2020-10-19 22:24:53,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:24:53,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:24:53,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:24:53,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:24:53,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (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 [2020-10-19 22:24:53,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:24:53,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:24:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:24:53,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:24:53,460 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:24:53,460 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-19 22:24:53,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:53 BoogieIcfgContainer [2020-10-19 22:24:53,463 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:24:53,464 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:24:53,464 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:24:53,468 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:24:53,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:24:52" (1/3) ... [2020-10-19 22:24:53,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f7cb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:53, skipping insertion in model container [2020-10-19 22:24:53,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:53" (2/3) ... [2020-10-19 22:24:53,470 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64f7cb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:53, skipping insertion in model container [2020-10-19 22:24:53,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:53" (3/3) ... [2020-10-19 22:24:53,473 INFO L111 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-10-19 22:24:53,486 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:24:53,495 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:24:53,517 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:24:53,592 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:24:53,595 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:24:53,595 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:24:53,595 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:24:53,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:24:53,597 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:24:53,597 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:24:53,598 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:24:53,617 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-19 22:24:53,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 22:24:53,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:53,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:53,634 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:53,641 INFO L82 PathProgramCache]: Analyzing trace with hash -721193823, now seen corresponding path program 1 times [2020-10-19 22:24:53,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:53,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413628998] [2020-10-19 22:24:53,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:53,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:53,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413628998] [2020-10-19 22:24:53,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:53,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:53,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716604282] [2020-10-19 22:24:53,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:53,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:53,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:53,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:53,926 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-10-19 22:24:53,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:53,979 INFO L93 Difference]: Finished difference Result 60 states and 98 transitions. [2020-10-19 22:24:53,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:53,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-19 22:24:53,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:53,993 INFO L225 Difference]: With dead ends: 60 [2020-10-19 22:24:53,993 INFO L226 Difference]: Without dead ends: 45 [2020-10-19 22:24:53,997 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 [2020-10-19 22:24:54,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-19 22:24:54,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 31. [2020-10-19 22:24:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-19 22:24:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 54 transitions. [2020-10-19 22:24:54,045 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 54 transitions. Word has length 13 [2020-10-19 22:24:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,045 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 54 transitions. [2020-10-19 22:24:54,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,046 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 54 transitions. [2020-10-19 22:24:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-19 22:24:54,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,047 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:24:54,048 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,048 INFO L82 PathProgramCache]: Analyzing trace with hash -41135453, now seen corresponding path program 1 times [2020-10-19 22:24:54,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390670822] [2020-10-19 22:24:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390670822] [2020-10-19 22:24:54,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106771650] [2020-10-19 22:24:54,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,100 INFO L87 Difference]: Start difference. First operand 31 states and 54 transitions. Second operand 3 states. [2020-10-19 22:24:54,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,126 INFO L93 Difference]: Finished difference Result 74 states and 129 transitions. [2020-10-19 22:24:54,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,127 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-19 22:24:54,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,129 INFO L225 Difference]: With dead ends: 74 [2020-10-19 22:24:54,129 INFO L226 Difference]: Without dead ends: 45 [2020-10-19 22:24:54,130 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 [2020-10-19 22:24:54,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-19 22:24:54,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-10-19 22:24:54,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-19 22:24:54,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 74 transitions. [2020-10-19 22:24:54,139 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 74 transitions. Word has length 13 [2020-10-19 22:24:54,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,139 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 74 transitions. [2020-10-19 22:24:54,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,140 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 74 transitions. [2020-10-19 22:24:54,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:24:54,141 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:24:54,141 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,142 INFO L82 PathProgramCache]: Analyzing trace with hash -881957389, now seen corresponding path program 1 times [2020-10-19 22:24:54,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094074325] [2020-10-19 22:24:54,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094074325] [2020-10-19 22:24:54,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336862589] [2020-10-19 22:24:54,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,201 INFO L87 Difference]: Start difference. First operand 43 states and 74 transitions. Second operand 3 states. [2020-10-19 22:24:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,225 INFO L93 Difference]: Finished difference Result 69 states and 114 transitions. [2020-10-19 22:24:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,226 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-19 22:24:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,227 INFO L225 Difference]: With dead ends: 69 [2020-10-19 22:24:54,227 INFO L226 Difference]: Without dead ends: 48 [2020-10-19 22:24:54,228 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 [2020-10-19 22:24:54,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-19 22:24:54,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-10-19 22:24:54,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-19 22:24:54,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 76 transitions. [2020-10-19 22:24:54,236 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 76 transitions. Word has length 14 [2020-10-19 22:24:54,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,236 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 76 transitions. [2020-10-19 22:24:54,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,237 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 76 transitions. [2020-10-19 22:24:54,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:24:54,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:24:54,239 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,239 INFO L82 PathProgramCache]: Analyzing trace with hash -1274984399, now seen corresponding path program 1 times [2020-10-19 22:24:54,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560548568] [2020-10-19 22:24:54,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560548568] [2020-10-19 22:24:54,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405084089] [2020-10-19 22:24:54,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,290 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,291 INFO L87 Difference]: Start difference. First operand 46 states and 76 transitions. Second operand 3 states. [2020-10-19 22:24:54,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,310 INFO L93 Difference]: Finished difference Result 85 states and 141 transitions. [2020-10-19 22:24:54,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-19 22:24:54,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,313 INFO L225 Difference]: With dead ends: 85 [2020-10-19 22:24:54,313 INFO L226 Difference]: Without dead ends: 83 [2020-10-19 22:24:54,314 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 [2020-10-19 22:24:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-19 22:24:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 61. [2020-10-19 22:24:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-19 22:24:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 101 transitions. [2020-10-19 22:24:54,324 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 101 transitions. Word has length 14 [2020-10-19 22:24:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,325 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 101 transitions. [2020-10-19 22:24:54,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 101 transitions. [2020-10-19 22:24:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-19 22:24:54,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:24:54,327 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,328 INFO L82 PathProgramCache]: Analyzing trace with hash -594926029, now seen corresponding path program 1 times [2020-10-19 22:24:54,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42836211] [2020-10-19 22:24:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42836211] [2020-10-19 22:24:54,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958389617] [2020-10-19 22:24:54,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,372 INFO L87 Difference]: Start difference. First operand 61 states and 101 transitions. Second operand 3 states. [2020-10-19 22:24:54,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,390 INFO L93 Difference]: Finished difference Result 141 states and 235 transitions. [2020-10-19 22:24:54,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,391 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-19 22:24:54,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,393 INFO L225 Difference]: With dead ends: 141 [2020-10-19 22:24:54,393 INFO L226 Difference]: Without dead ends: 85 [2020-10-19 22:24:54,394 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 [2020-10-19 22:24:54,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-19 22:24:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2020-10-19 22:24:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-19 22:24:54,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 135 transitions. [2020-10-19 22:24:54,410 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 135 transitions. Word has length 14 [2020-10-19 22:24:54,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,411 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 135 transitions. [2020-10-19 22:24:54,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,411 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 135 transitions. [2020-10-19 22:24:54,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:24:54,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:24:54,414 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,414 INFO L82 PathProgramCache]: Analyzing trace with hash -869595720, now seen corresponding path program 1 times [2020-10-19 22:24:54,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503149233] [2020-10-19 22:24:54,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503149233] [2020-10-19 22:24:54,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689057193] [2020-10-19 22:24:54,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,496 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,496 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,497 INFO L87 Difference]: Start difference. First operand 83 states and 135 transitions. Second operand 3 states. [2020-10-19 22:24:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,525 INFO L93 Difference]: Finished difference Result 126 states and 202 transitions. [2020-10-19 22:24:54,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,526 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-19 22:24:54,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,528 INFO L225 Difference]: With dead ends: 126 [2020-10-19 22:24:54,528 INFO L226 Difference]: Without dead ends: 87 [2020-10-19 22:24:54,529 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 [2020-10-19 22:24:54,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-19 22:24:54,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-10-19 22:24:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-19 22:24:54,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 135 transitions. [2020-10-19 22:24:54,538 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 135 transitions. Word has length 15 [2020-10-19 22:24:54,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,539 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 135 transitions. [2020-10-19 22:24:54,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,539 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 135 transitions. [2020-10-19 22:24:54,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:24:54,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:24:54,541 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1262622730, now seen corresponding path program 1 times [2020-10-19 22:24:54,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552594742] [2020-10-19 22:24:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552594742] [2020-10-19 22:24:54,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117815204] [2020-10-19 22:24:54,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,574 INFO L87 Difference]: Start difference. First operand 85 states and 135 transitions. Second operand 3 states. [2020-10-19 22:24:54,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,593 INFO L93 Difference]: Finished difference Result 237 states and 377 transitions. [2020-10-19 22:24:54,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,594 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-19 22:24:54,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,595 INFO L225 Difference]: With dead ends: 237 [2020-10-19 22:24:54,595 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 22:24:54,596 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 [2020-10-19 22:24:54,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 22:24:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2020-10-19 22:24:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-19 22:24:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 243 transitions. [2020-10-19 22:24:54,612 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 243 transitions. Word has length 15 [2020-10-19 22:24:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,612 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 243 transitions. [2020-10-19 22:24:54,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 243 transitions. [2020-10-19 22:24:54,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-19 22:24:54,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,614 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:24:54,615 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,615 INFO L82 PathProgramCache]: Analyzing trace with hash -1942681100, now seen corresponding path program 1 times [2020-10-19 22:24:54,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131482185] [2020-10-19 22:24:54,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,675 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131482185] [2020-10-19 22:24:54,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955271209] [2020-10-19 22:24:54,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,677 INFO L87 Difference]: Start difference. First operand 157 states and 243 transitions. Second operand 3 states. [2020-10-19 22:24:54,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,699 INFO L93 Difference]: Finished difference Result 193 states and 301 transitions. [2020-10-19 22:24:54,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,701 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-19 22:24:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,702 INFO L225 Difference]: With dead ends: 193 [2020-10-19 22:24:54,702 INFO L226 Difference]: Without dead ends: 191 [2020-10-19 22:24:54,703 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 [2020-10-19 22:24:54,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-19 22:24:54,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 157. [2020-10-19 22:24:54,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-19 22:24:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 239 transitions. [2020-10-19 22:24:54,743 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 239 transitions. Word has length 15 [2020-10-19 22:24:54,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,743 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 239 transitions. [2020-10-19 22:24:54,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,744 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 239 transitions. [2020-10-19 22:24:54,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:24:54,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,745 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:24:54,746 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,746 INFO L82 PathProgramCache]: Analyzing trace with hash -486383640, now seen corresponding path program 1 times [2020-10-19 22:24:54,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525682400] [2020-10-19 22:24:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525682400] [2020-10-19 22:24:54,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599357245] [2020-10-19 22:24:54,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,777 INFO L87 Difference]: Start difference. First operand 157 states and 239 transitions. Second operand 3 states. [2020-10-19 22:24:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,798 INFO L93 Difference]: Finished difference Result 277 states and 425 transitions. [2020-10-19 22:24:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-19 22:24:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,801 INFO L225 Difference]: With dead ends: 277 [2020-10-19 22:24:54,801 INFO L226 Difference]: Without dead ends: 275 [2020-10-19 22:24:54,802 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 [2020-10-19 22:24:54,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-19 22:24:54,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 225. [2020-10-19 22:24:54,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-10-19 22:24:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 335 transitions. [2020-10-19 22:24:54,816 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 335 transitions. Word has length 16 [2020-10-19 22:24:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,816 INFO L481 AbstractCegarLoop]: Abstraction has 225 states and 335 transitions. [2020-10-19 22:24:54,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 335 transitions. [2020-10-19 22:24:54,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-19 22:24:54,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,818 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:24:54,819 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,820 INFO L82 PathProgramCache]: Analyzing trace with hash 193674730, now seen corresponding path program 1 times [2020-10-19 22:24:54,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753487473] [2020-10-19 22:24:54,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:54,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:54,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753487473] [2020-10-19 22:24:54,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:54,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:54,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255064890] [2020-10-19 22:24:54,849 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:54,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:54,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:54,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:54,850 INFO L87 Difference]: Start difference. First operand 225 states and 335 transitions. Second operand 3 states. [2020-10-19 22:24:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:54,898 INFO L93 Difference]: Finished difference Result 517 states and 769 transitions. [2020-10-19 22:24:54,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:54,901 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-19 22:24:54,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:54,905 INFO L225 Difference]: With dead ends: 517 [2020-10-19 22:24:54,906 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:24:54,908 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 [2020-10-19 22:24:54,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:24:54,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 297. [2020-10-19 22:24:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-10-19 22:24:54,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 427 transitions. [2020-10-19 22:24:54,950 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 427 transitions. Word has length 16 [2020-10-19 22:24:54,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:54,951 INFO L481 AbstractCegarLoop]: Abstraction has 297 states and 427 transitions. [2020-10-19 22:24:54,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:54,951 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 427 transitions. [2020-10-19 22:24:54,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:24:54,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:54,958 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:54,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:24:54,959 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:54,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:54,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2102192011, now seen corresponding path program 1 times [2020-10-19 22:24:54,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:54,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645972065] [2020-10-19 22:24:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:54,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:55,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:55,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645972065] [2020-10-19 22:24:55,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:55,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:55,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571663576] [2020-10-19 22:24:55,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:55,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:55,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:55,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:55,016 INFO L87 Difference]: Start difference. First operand 297 states and 427 transitions. Second operand 3 states. [2020-10-19 22:24:55,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:55,059 INFO L93 Difference]: Finished difference Result 453 states and 649 transitions. [2020-10-19 22:24:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:55,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 22:24:55,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:55,062 INFO L225 Difference]: With dead ends: 453 [2020-10-19 22:24:55,062 INFO L226 Difference]: Without dead ends: 311 [2020-10-19 22:24:55,063 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 [2020-10-19 22:24:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-10-19 22:24:55,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 309. [2020-10-19 22:24:55,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 309 states. [2020-10-19 22:24:55,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 435 transitions. [2020-10-19 22:24:55,082 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 435 transitions. Word has length 17 [2020-10-19 22:24:55,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:55,082 INFO L481 AbstractCegarLoop]: Abstraction has 309 states and 435 transitions. [2020-10-19 22:24:55,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:55,083 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 435 transitions. [2020-10-19 22:24:55,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:24:55,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:55,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:55,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:24:55,086 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:55,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:55,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1709165001, now seen corresponding path program 1 times [2020-10-19 22:24:55,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:55,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457315699] [2020-10-19 22:24:55,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:55,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:55,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457315699] [2020-10-19 22:24:55,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:55,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:55,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813151465] [2020-10-19 22:24:55,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:55,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:55,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:55,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:55,140 INFO L87 Difference]: Start difference. First operand 309 states and 435 transitions. Second operand 3 states. [2020-10-19 22:24:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:55,170 INFO L93 Difference]: Finished difference Result 521 states and 733 transitions. [2020-10-19 22:24:55,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:55,172 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 22:24:55,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:55,175 INFO L225 Difference]: With dead ends: 521 [2020-10-19 22:24:55,176 INFO L226 Difference]: Without dead ends: 519 [2020-10-19 22:24:55,177 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 [2020-10-19 22:24:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-19 22:24:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 453. [2020-10-19 22:24:55,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 453 states. [2020-10-19 22:24:55,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 619 transitions. [2020-10-19 22:24:55,202 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 619 transitions. Word has length 17 [2020-10-19 22:24:55,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:55,202 INFO L481 AbstractCegarLoop]: Abstraction has 453 states and 619 transitions. [2020-10-19 22:24:55,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:55,203 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 619 transitions. [2020-10-19 22:24:55,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-19 22:24:55,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:55,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:55,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:24:55,205 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:55,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1905743925, now seen corresponding path program 1 times [2020-10-19 22:24:55,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:55,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416562102] [2020-10-19 22:24:55,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:55,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:55,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416562102] [2020-10-19 22:24:55,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:55,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:55,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15737937] [2020-10-19 22:24:55,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:55,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:55,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:55,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:55,242 INFO L87 Difference]: Start difference. First operand 453 states and 619 transitions. Second operand 3 states. [2020-10-19 22:24:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:55,267 INFO L93 Difference]: Finished difference Result 1017 states and 1373 transitions. [2020-10-19 22:24:55,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:55,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-19 22:24:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:55,271 INFO L225 Difference]: With dead ends: 1017 [2020-10-19 22:24:55,272 INFO L226 Difference]: Without dead ends: 583 [2020-10-19 22:24:55,273 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 [2020-10-19 22:24:55,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2020-10-19 22:24:55,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 581. [2020-10-19 22:24:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 581 states. [2020-10-19 22:24:55,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 755 transitions. [2020-10-19 22:24:55,295 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 755 transitions. Word has length 17 [2020-10-19 22:24:55,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:55,296 INFO L481 AbstractCegarLoop]: Abstraction has 581 states and 755 transitions. [2020-10-19 22:24:55,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 755 transitions. [2020-10-19 22:24:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:24:55,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:55,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:55,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:24:55,298 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:55,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:55,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1444723487, now seen corresponding path program 1 times [2020-10-19 22:24:55,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:55,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321604895] [2020-10-19 22:24:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:55,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321604895] [2020-10-19 22:24:55,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:55,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:55,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855574697] [2020-10-19 22:24:55,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:55,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:55,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:55,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:55,340 INFO L87 Difference]: Start difference. First operand 581 states and 755 transitions. Second operand 3 states. [2020-10-19 22:24:55,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:55,362 INFO L93 Difference]: Finished difference Result 873 states and 1125 transitions. [2020-10-19 22:24:55,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:55,363 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-19 22:24:55,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:55,366 INFO L225 Difference]: With dead ends: 873 [2020-10-19 22:24:55,366 INFO L226 Difference]: Without dead ends: 599 [2020-10-19 22:24:55,367 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 [2020-10-19 22:24:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-19 22:24:55,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 597. [2020-10-19 22:24:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-19 22:24:55,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 755 transitions. [2020-10-19 22:24:55,386 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 755 transitions. Word has length 18 [2020-10-19 22:24:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:55,387 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 755 transitions. [2020-10-19 22:24:55,387 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 755 transitions. [2020-10-19 22:24:55,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:24:55,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:55,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:55,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:24:55,389 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:55,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:55,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1051696477, now seen corresponding path program 1 times [2020-10-19 22:24:55,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:55,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046312480] [2020-10-19 22:24:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:55,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:55,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046312480] [2020-10-19 22:24:55,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:55,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:55,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729167615] [2020-10-19 22:24:55,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:55,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:55,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:55,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:55,415 INFO L87 Difference]: Start difference. First operand 597 states and 755 transitions. Second operand 3 states. [2020-10-19 22:24:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:55,442 INFO L93 Difference]: Finished difference Result 967 states and 1204 transitions. [2020-10-19 22:24:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:55,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-19 22:24:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:55,447 INFO L225 Difference]: With dead ends: 967 [2020-10-19 22:24:55,447 INFO L226 Difference]: Without dead ends: 965 [2020-10-19 22:24:55,448 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 [2020-10-19 22:24:55,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2020-10-19 22:24:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 901. [2020-10-19 22:24:55,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 901 states. [2020-10-19 22:24:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1107 transitions. [2020-10-19 22:24:55,483 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1107 transitions. Word has length 18 [2020-10-19 22:24:55,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:55,483 INFO L481 AbstractCegarLoop]: Abstraction has 901 states and 1107 transitions. [2020-10-19 22:24:55,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1107 transitions. [2020-10-19 22:24:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-19 22:24:55,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:55,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:55,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:24:55,486 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:55,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:55,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1731754847, now seen corresponding path program 1 times [2020-10-19 22:24:55,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:55,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349909567] [2020-10-19 22:24:55,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:55,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349909567] [2020-10-19 22:24:55,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:55,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:55,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629840066] [2020-10-19 22:24:55,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:55,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:55,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:55,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:55,506 INFO L87 Difference]: Start difference. First operand 901 states and 1107 transitions. Second operand 3 states. [2020-10-19 22:24:55,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:55,544 INFO L93 Difference]: Finished difference Result 1989 states and 2387 transitions. [2020-10-19 22:24:55,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:55,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-19 22:24:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:55,545 INFO L225 Difference]: With dead ends: 1989 [2020-10-19 22:24:55,545 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:24:55,547 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 [2020-10-19 22:24:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:24:55,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:24:55,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:24:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:24:55,548 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-10-19 22:24:55,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:55,548 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:24:55,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:55,549 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:24:55,549 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:24:55,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:24:55,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point L60-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point L52-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point L94-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:24:55,581 INFO L274 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-10-19 22:24:55,582 INFO L274 CegarLoopResult]: For program point L79-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,582 INFO L274 CegarLoopResult]: For program point L80(line 80) no Hoare annotation was computed. [2020-10-19 22:24:55,582 INFO L277 CegarLoopResult]: At program point L105(lines 7 109) the Hoare annotation is: true [2020-10-19 22:24:55,582 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-10-19 22:24:55,582 INFO L274 CegarLoopResult]: For program point L64-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,582 INFO L274 CegarLoopResult]: For program point L89-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,582 INFO L274 CegarLoopResult]: For program point L56-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point L48(lines 48 50) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point L48-2(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point L90(line 90) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point L74-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L277 CegarLoopResult]: At program point L99-1(lines 29 104) the Hoare annotation is: true [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:24:55,583 INFO L277 CegarLoopResult]: At program point L108(lines 6 109) the Hoare annotation is: true [2020-10-19 22:24:55,583 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-10-19 22:24:55,585 INFO L274 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-10-19 22:24:55,586 INFO L270 CegarLoopResult]: At program point L100-1(lines 7 109) the Hoare annotation is: false [2020-10-19 22:24:55,586 INFO L274 CegarLoopResult]: For program point L84-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,586 INFO L274 CegarLoopResult]: For program point L68-1(lines 29 104) no Hoare annotation was computed. [2020-10-19 22:24:55,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:24:55 BoogieIcfgContainer [2020-10-19 22:24:55,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:24:55,606 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:24:55,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:24:55,606 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:24:55,607 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:53" (3/4) ... [2020-10-19 22:24:55,613 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:24:55,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-10-19 22:24:55,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-19 22:24:55,631 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:24:55,632 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:24:55,696 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:24:55,696 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:24:55,701 INFO L168 Benchmark]: Toolchain (without parser) took 3041.53 ms. Allocated memory was 34.6 MB in the beginning and 55.6 MB in the end (delta: 21.0 MB). Free memory was 14.7 MB in the beginning and 30.4 MB in the end (delta: -15.8 MB). Peak memory consumption was 5.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,703 INFO L168 Benchmark]: CDTParser took 0.79 ms. Allocated memory is still 32.0 MB. Free memory was 8.3 MB in the beginning and 8.3 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,705 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.69 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 13.9 MB in the beginning and 23.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,706 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 42.5 MB. Free memory was 23.3 MB in the beginning and 21.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,712 INFO L168 Benchmark]: Boogie Preprocessor took 24.03 ms. Allocated memory is still 42.5 MB. Free memory was 21.4 MB in the beginning and 20.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,713 INFO L168 Benchmark]: RCFGBuilder took 338.59 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 20.0 MB in the beginning and 15.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,713 INFO L168 Benchmark]: TraceAbstraction took 2141.48 ms. Allocated memory was 44.6 MB in the beginning and 55.6 MB in the end (delta: 11.0 MB). Free memory was 15.0 MB in the beginning and 34.2 MB in the end (delta: -19.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,714 INFO L168 Benchmark]: Witness Printer took 90.15 ms. Allocated memory is still 55.6 MB. Free memory was 34.2 MB in the beginning and 30.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:55,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79 ms. Allocated memory is still 32.0 MB. Free memory was 8.3 MB in the beginning and 8.3 MB in the end (delta: 43.7 kB). Peak memory consumption was 43.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 397.69 ms. Allocated memory was 34.6 MB in the beginning and 42.5 MB in the end (delta: 7.9 MB). Free memory was 13.9 MB in the beginning and 23.3 MB in the end (delta: -9.4 MB). Peak memory consumption was 11.1 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 35.32 ms. Allocated memory is still 42.5 MB. Free memory was 23.3 MB in the beginning and 21.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 24.03 ms. Allocated memory is still 42.5 MB. Free memory was 21.4 MB in the beginning and 20.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 338.59 ms. Allocated memory was 42.5 MB in the beginning and 44.6 MB in the end (delta: 2.1 MB). Free memory was 20.0 MB in the beginning and 15.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 2141.48 ms. Allocated memory was 44.6 MB in the beginning and 55.6 MB in the end (delta: 11.0 MB). Free memory was 15.0 MB in the beginning and 34.2 MB in the end (delta: -19.2 MB). Peak memory consumption was 12.7 MB. Max. memory is 14.3 GB. * Witness Printer took 90.15 ms. Allocated memory is still 55.6 MB. Free memory was 34.2 MB in the beginning and 30.4 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 14.3 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: 0.5s, 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: 0.3s 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...